Emerson EZH and EZHSO Series Pressure Reducing Regulators Instruction Manual
Contents
1. TYPES EZH DN 25 100 WITH WHISPER III AND EZHSO DN 25 100 WITH WHISPER III SLAM SHUT INTEGRATED X BODY WITHOUT SLAM SHUT E BODY REDUCTION DN 25 DN 50 DN 80 DN 100 DN 25 DN 50 DN 80 DN 100 0 223 781 1693 2742 255 793 1708 2789 1 215 764 1418 2479 209 716 1172 2438 2 140 603 975 1644 127 566 984 1711 3 87 370 685 1041 81 358 690 1057 0 433 1516 3285 5320 495 1539 3313 5410 1 417 1482 2751 4810 406 1389 2774 4730 R 2 273 1169 1892 3190 247 1099 1908 3320 3 168 718 1328 2020 158 695 1339 2050 0 35 5 37 30 8 31 7 33 8 33 5 30 8 30 4 c 1 35 4 37 5 33 6 34 1 39 4 34 1 33 6 32 4 2 32 3 39 5 37 1 36 4 39 9 35 7 37 1 35 7 3 32 9 39 4 38 3 37 6 39 9 37 7 38 3 37 3 Table 4 Failure Mode Analysis FAILURE CAUSE OF PART NAME WORST CASE FAILURE EFFECT REGULATOR TYPE REGULATOR REACTION MODE Decrease of feeding EZHSO Open e A Filter blocked Debris or aromatics pressure gives Filter d clogged present in the gas decrease of motorization pressure EZH e Close Debris or aromatics re Bane Open WW Pilot Disk Pilot cannot be closed d motorization present in the gas pressure EZH Open FID ower Pilot cannot control Debris or aromatics Ec iia SE Diaphragm present in the gas pressure EZH SH Close Pilot Upper Pilot cannot feed Debris or aromatics n EZHSO Open Diaphragm the regulator present in the gas pressure EZH P Close Balanci2. MN OUTLET PRESSURE AC ACCURACY CLASS PILOT CONTROL SPRING INFORMATION ADJUSTMENT RANGES bar TYPE EZH TYPE EZHSO Spring Colour 1 0 to 1 8 2 5 2 5 Yellow 1 8 to 3 0 2 5 2 5 Green 3 0 to 5 5 2 596 2 5 Blue PRX 120 and 5 5 to 8 5 2 5 2 5 Black PRX 125 8 5 to 14 5 1 2 5 Silver 14 5 to 23 0 1 2 5 Gold 23 0 to 30 0 1 2 5 Aluminium 30 0 to 40 0 1 2 5 Red PRX 120 AP and E PRX 125 AP 30 0 to 80 0 196 2 596 Clear R95 Table 3a 2 1 Line Flow Coefficients Regulator and Slam Shut Travel TYPES EZH DN 25 100 AND EZHSO DN 25 100 WITH SLAM SHUT X BODY WITHOUT SLAM SHUT E BODY REDUCTION DN 25 DN 50 DN 80 DN 100 DN 25 DN 50 DN 80 DN 100 0 284 1078 2247 3567 280 1088 2266 3696 a 1 210 908 1684 2969 218 829 1698 2902 i 2 126 671 1058 1763 128 607 1066 1784 3 79 385 685 1062 81 370 690 1072 0 550 2092 4359 6920 544 2110 4396 7170 e 1 408 1762 3266 5760 423 1609 3294 5630 E 2 245 1301 2052 3420 249 1177 2069 3460 3 154 746 1328 2060 157 718 1339 2080 0 31 3 38 3 30 8 32 5 35 5 33 5 30 8 31 4 r 1 34 3 35 3 33 9 35 3 38 7 31 9 33 9 34 2 2 33 6 38 8 37 8 37 3 39 7 35 6 37 8 36 3 3 32 1 40 8 33 6 37 1 39 1 38 2 33 6 37 3 Regulator travel mm 9 17 25 30 9 17 25 30 Slam shut travel mm 15 30 50 Types EZH and EZHSO Table 3b 2 1 Line Flow Coefficients Regulator with Integrated Whisper II Silencer
3. Figure 10 Type EZH OS2 DN 100 Spring to Close Version Operational Schematic When the gas demand in the downstream system has been satisfied the outlet pressure Pd increases The increased pressure is transmitted through the downstream control line and acts on the pilot diaphragm This pressure exceeds the pilot spring setting and moves the Type PRX diaphragm closing the Type PRX orifice and interrupting the motorization pressure supply to main valve actuator The excess of motorization pressure Pm acting on both the main diaphragm and Type PRX pilot bleeds to the downstream system through a bleed restriction in the pilot For Type EZH DN 100 a check valve Figure 26 is installed between outlet pressure and motorization pressure impulse lines this valve will protect the diaphragm assembly from wrong procedures during startup avoiding a too high pressure differential between outlet and motorization pressure Type EZHSO Spring to Open Version Type EZHSO Single Pilot Regulator Figures 11 and 12 The pilot operated Type EZHSO Spring to Open version will fail in open position in case of main valve diaphragm failure or lack of pressure supply to the pilot see Table 4 for Failure Mode Analysis Types EZH and EZHSO UPPER DIAPHRAGM TYPE PRX 120 FILTER VE SA 2 Ex V KS S B D LI R L M A LOWER DIAPHRAGM R2 EN intet pressure Pu EM Motorization
4. CZ a b e off SEN A Ey ier A L Ee ee CAS p ne S P anm X Se Q Laas LA Kg U3 AJ N M re N ye d TT p A Be Lee kk 3 VN ee PER mee V N X X X N RN 0 e OV ON Sw W W W S 8 See i S x T m Figure 20 Type EZH OS2 Slam Shut Version R123 Figure 21 Type EZH X Body 31 Types EZH and EZHSO 9 O o9 O O O O Figure 22 Type EZH Silencer Detail 34 Types EZH and EZHSO d f hr A Xs 7 P V A N Se TYPE PRX 120 AP OR PRX 125 AP A d 14 9 49 ZA aS ae 20 11 18 19 8 a E W e J TYPE PRX 120 OR PRX 125 TYPE PRX 120 OR PRX 120 AP TYPE PRX 125 OR PRX 125 AP Figure 23 Types PRX 120 and PRX 125 Pilots 33 Types EZH and EZHSO Type PRX Pilot Figure 23 Key Description Adjusting screw Locknut Cap O ring O ring Spring carrier plate Spring Spring cover Spring carrier plate 10 Screw 1
5. 24 A108 Types EZH and EZHSO Table 10 Torque Specifications SCREW SCREW SCREW SCREW px Key 21 Figures 16 17 18 and 19 Key 24 Figures 16 and 18 Key 6 Figures 16 17 18 and 19 Key 50 Figure 20 Key 1 Figure 21 METRIC SPANNER TORGU INCHES SPANNER Lonau INCHES SPANNER Longu INCHES SPANNER Lonau N m N m N m N m 25 M12 19 70 1 2 13X7 8 9 16 12X2 13 16 9 16 12X1 3 4 13 16 3 4 110 75 110 50 M16 24 190 1 2 13X1 1 2 13X1 1 4 3 4 1 2 13X1 1 2 3 4 80 M22 32 350 3 4 10X2 11 8 150 5 8 11X1 1 2 15 16 100 5 8 11X1 3 4 15 16 175 100 M27 41 400 3 4 10X3 1 1 8 200 3 4 10X2 1 4 1 1 8 260 SCREW SCREW TRAVEL INDICATOR FITTING SCREW on Key 16 Figures 16 17 18 and 19 Key 33 Figures 16 and 17 Key 141 Figures 16 17 18 and 19 Key 51 Figure 20 METRIC SPANNER euism METRIC SPANNER por METRIC SPANNER Telus METRIC SPANNER EE N m N m N m N m 25 M5 Allen 4 6 5 M4 Allen 3 4 M6 Allen5 7 Ne alana Se M16 Le 30 M8 13 15 100 M8 Aleng 12 M6 Alons Ko 20 SCREW SCREW SCREW Keys 68 and 74 Figures 17 ES 2m DN and 19 Key 77 Figures 17 and 19 Key 154 Figures 18 and 19 METRIC SPANNER TORQUE METRIC SPANNER TORQUE METRIC SPANNER TORQUE N m N m N m 25 M4 Allen 3 4 50 M6 Allen 5 7 80 M8 Allen 6 12 100 M5 Allen 4 4 M16 20 135 M4 Alle
6. 4 Connect a downstream bleed line from the S port of the upstream working Type PRX pilot to the intermediate pressure portion of piping using 8 10 inside diameter tube STARTUP AND ADJUSTMENT Pre startup Considerations Each regulator is factory set for the outlet pressure specified on the order If no setting was specified outlet pressure was factory set at the mid range of the pilot control spring Before beginning the start up procedure in this section make sure the following conditions are in effect Block valves isolate the regulator Vent vales are closed Abypass if any is in operation In all cases check the control spring setting to make sure it is correct for the application Be sure to slowly introduce pressure into the system to prevent downstream overpressure due to potential rapid pressure increase Pressure gauges should always be used to monitor downstream pressure during startup Procedures used in putting this regulator into operation must be planned accordingly if the downstream system is pressurized by another regulator or by a manual bypass TYPE EZH OS2 SLAM SHUT VERSION In the case of opening the mechanism box lid 1 After arming never leave the key on the stem 2 Never put your fingers in or near the reset mechanism area Note When using a Type SA 2 pilot supply filter regulator the differential pressure across the regulator must be at least 3 bar for optimum regulator performa
7. For a wide open downstream monitor installation adjust the upstream working pilot until intermediate pressure is higher than the desired setpoint of the monitor pilot Adjust the downstream monitoring pilot to the desired monitoring takeover pressure Reduce the upstream pilot to the normal outlet pressure setting For a wide open upstream monitor installation adjust the downstream working pilot to a setpoint higher than the setpoint of the monitor pilot Adjust the upstream monitoring pilot to the desired monitoring takeover pressure Reduce the downstream pilot to the normal outlet pressure setting For a working monitor installation adjust the setpoint of the upstream monitor pilot to the desired maximum pressure Adjust the upstream working pilot to the desired intermediate pressure setting Adjust the downstream pilot to a pressure setting slightly above the upstream monitor pilot pressure setting Adjust the upstream monitor pilot to its desired setpoint Establish final desired downstream pressure by adjusting the downstream working regulator pilot 10 After adjusting the Type PRX pilot s to the desired pressure setting s slowly open the downstream block valve wide open 11 Close the bypass valve if used Type OS2 Manometric Box Set Point Verification Procedure Using the vent valve supply a pressure equal to the set pressure foreseen for the regulator j release relay stage gt Set Stage 1 Slam shut va
8. Spring to Close and a downstream active regulator Type EZHSO Spring to Open With this configuration in case of regulator main diaphragm failure it will fail in open position letting the monitor work properly in case of monitor main diaphragm failure it will fail in close position guaranteeing a protection against overpressure to downstream system Types EZH and EZHSO D TUE TYPE PRX TYPE PRX Veg z R sHs E v HE S B ETE d G J CX M L R aH I o R1 L A A Be TYPE SA 2 D E mn aul m R3 LJ T SEN B y Ki R4 TYPE EZH TYPE EZHO EE intet pressure Pu HES Wotorization pressure Pm TYPE PRX Pilot feeding pressure Pup S BLEED PORT TYPE SA 2 Outlet Pd B SUPPLY PORT V SENSING utlet pressure Pd L MOTORIZATION PORT R PILOT Atmospheric pressure Pb A SENSING PORT M INLET Figure 13 Upstream Wide Open Monitoring System Operational Schematic for DN 25 50 and 80 The schematic from Figure 13 represents the configuration for the DN 25 50 and 80 for the DN 100 the schematic VAN CAUTION remains the same with the remark that a check valve Figure 26 must be installed between outlet pressure and loading pressure impulse
9. 158 159 193 Description Protective cap Stem Upper spring axe Lower spring axe Anti friction ring Stem nut Hex nut O ring Hex socket cap screw Stem nut Upper spring seat adapter Anti friction ring O ring Check valve Washer Type EZH OS2 Release Relay Figure 20 Key Description O ring Valve plug Body Fitting O ring Screw Screw Seat Bypass Guide ring Spring O ring Cover Type EZH X Body Figure 21 Key OO E ND Description Screw O ring O ring Bottom Seat O ring Type EZH Silencer Figure 22 Key 161 2 34 Description Attenuation Module Seat O ring Check Valve Figure 26 Key 159 160 Description Check valve Male tube connector Types EZH and EZHSO amp amp SO amp 9 0666 zen E gt LIT ea NSS 057 aa e WY Winx 2 e NIWA WO SR AZ WN Y E RS ZT bv e P dent NN ET Y CT A N N EH F g NS ESS S KEE Ke N A S 5 V NZ D Be AW d TTL OOOO VO OO 27 Figure 16 Type EZH Main Valve Assembly DN 25 50 and 80 Types EZH and EZHSO TRAVEL INDICATOR DETAIL amp 141963 85 70 73 72 69 0 GA GS s ip D A 15 16 17 19 S
10. and insert the regulator seat key 5 Tighten the regulator seat until it stops Lightly lubricate the outer and inner rims of the diaphragm key 18 Place the diaphragm assembly on top of the regulator seat key 5 The screw unit key 17 will slide into the regulator seat key 5 Take care to avoid damage to parts when reassembling Set the spring key 1 version Type EZH spring diameter 3 on top of the nut key 21 Align the regulator cover key 19 over the body key 7 with the sense port V opposite the pilot supply port R Place the filter pad key 12 and nets key 8 one on each side of the filter pad on the filter cover key 11 Pick up the body key 7 and place it on the filter cover key 11 with the inlet port M aligned vertically with the sense port V Insert bolts key 2 Place washers key 9 and nuts key 10 on the end of the bolts Tighten the nuts 23 Types EZH and EZHSO TROUBLESHOOTING Servicing Check Operations concerning the integral slam shut version are in italic Recommended frequency 2times per year Verification Set point verification Regulator valve plug tightness Tripping and setpoint value Slam shut valve tightness Starting positions Inlet valve gt Open Outlet valve gt Open e Slam shut valve plug Open Regulator gt n operation Inlet and outlet side of the regulator are under pressure Tight shut off verification and trip
11. 192 if present by loosening the travel indicator fitting key 141 and lifting out the travel indicator assembly Remove hex head cap screws key 21 washers key 22 and hex nuts key 23 Carefully lift the upper actuator casing key 11 off the lower actuator casing key 5 Inspect the upper actuator casing key 11 O rings key 9 and anti friction rings key 8 for damage or wear If damaged remove and replace with new parts Place the anti friction rings in the body first then slide the O ring between the anti friction rings Lift off the diaphragm plates system Remove O ring key 15 Inspect diaphragm and O rings for damage or wear and replace if necessary Remove sleeve guide key 61 utilizing cap key 70 to unscrew Remove cage key 78 Remove seat ring key 2 Inspect seat ring for damage or wear If damaged replace with new parts Remove O ring key 34 from body Inspect for damage or wear If damaged replace with new parts Types EZH and EZHSO 10 14 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Lubricate O ring key 34 and replace into the body Place seat ring key 2 on top of O ring in body Place cage key 78 on the top of seat ring key 2 Screw sleeve guide into lower casing key 5 utilizing cap key 70 Lubricate the sleeve key 14 in the upper plate contact area and assemble the diaphragm plates system on the sleeve s
12. 236315 BMS 071 un ir CLISORF CL300RF CL600RF MaxMin _ types of BMS PNIS DE e e Fe Other configurations available contact factory norme mode d faillance FISHER y standard failure mode y n norme classe s curit FRANCEL i standard slam shut class 28320 Gallardon France Gaz Nature Cat IV PS PT Temp TS 20 60 C Date Fab Test t ri Mig Test date shell A352LCC A350LF2 Reduction 0 1 2 3 Cg See Table 3 Is Depending on BMS DS configuration CLASS PN 150 300 600 16B 25B 40B Pumax 189 50 100 16 25 40 PT 32 79 158 26 40 63 PS 189 50 100 16 235 40 Figure 3 Types EZH OS2 and EZHSO OS2 Label X Body CLISORF CL300RF CL600RF PN16B PN25B PN40B Failure mode FC FO Other configurations available contact factory DN 25 50 80 100 LEZH E250 REGULATEUR 7 PU NREGULATOR Reduction
13. E mail info tartarinigemerson com For further information visit www emersonprocess com regulators The Emerson logo is a trademark and service mark of Emerson Electric Co All other marks are the property of their prospective owners Fisher is a mark owned by Fisher Controls International LLC a business of Emerson Process Management The contents of this publication are presented for informational purposes only and while every effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or their use or applicability We reserve the right to modify or improve the designs or specifications of such products at any time without notice Emerson Process Management does not assume responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any Emerson Process Management product remains solely with the purchaser EMERSON GEmerson Process Management Regulator Technologies Inc 2008 2013 All Rights Reserved
14. EZHSO OS2 us Vertical Position 109 Table 6b Dimensions Types EZH OS2 and EZHSO OS2 MAXIMUM OVERALL DIMENSIONS mm DN A Cc H J B D E l K Type PRX Type PRX Type PRX Type PRX Type PRX Type PRX EE E a A Horizontal Vertical Horizontal Vertical Horizontal Vertical 25 184 197 210 193 5 250 290 310 315 320 260 250 113 280 190 38 50 254 267 286 254 267 265 320 320 330 380 310 310 144 270 190 80 298 317 337 310 317 301 400 400 366 500 390 390 200 270 270 51 100 352 368 394 350 368 345 442 427 410 580 394 394 240 140 R114a Types EZH and EZHSO S Indicator cover removal clearance DN 25 50 and 80 a U H lt DN 1000 La Indicator cover removal clearance Figure 7 Dimensions Types EZH and EZHSO Horizontal Position DN 25 50 80 and 100 Table 7 Approximate Regulator Weights Types EZH and EZHSO WEIGHTS kg DN CL150 PN 16B CL300 PN 25B PN 40B CL600 25 38 39 40 50 71 74 75 80 145 151 153 100 211 224 239 1 For Type EZHSO version add 1 kg R116a Figure 8 Dimensions Types EZH and EZHSO Vertical Position Table 8 Dimensions Types EZH and EZHSO MAXIMUM OVERALL DIMENSIONS mm DN A C H J B E I K CL150 CL300 CL6
15. Maintenance for Types EZH and EZHSO DN 25 50 and 80 1 2 Remove screws key 24 Carefully lift the upper and lower actuator casing assembly keys 11 and 5 off the body key 1 Remove cap screws key 6 Lift off intermediate flange key 25 Remove O ring key 7 Inspect the O ring for damage or wear and replace if necessary Lightly lubricate O ring before placing in the body key 1 Place the intermediate flange key 25 on the body make sure to position the screws key 24 holes on the outside of the body key 1 Secure with cap screws key 6 See Torque Specification table for proper torque Continue with Disk Maintenance section step 7 Actuator Assembly Maintenance DN 25 50 and 80 Type EZH Actuator Maintenance is Make a mark on the upper actuator casing key 11 lower actuator casing key 5 intermediate flange key 25 and body key 1 to indicate proper alignment Remove travel indicator assembly keys 138 139 140 141 142 143 144 145 and 192 by loosening the travel indicator fitting key 141 and lifting out the travel indicator assembly Replace the two opposite bolts keys 21 22 and 23 with the two threaded stems and nuts delivered with the unit Secure the removal of the casings keys 11 and 5 by finishing with these two threaded stems Remove screws washers and hex nuts keys 21 22 and 23 Remove all the screws first then the two threaded stems and bracket Take
16. Type EZH OS2 Regulator with Slam shut Maintenance Figure 20 i 22 Unscrew the BMS safety manometric box impulse line connector Remove cover key 57 from the mechanism box BM Unscrew fastening screw key 51 Remove holding pin 5 Remove mechanism box 6 Unscrew screws key 50 from the connecting part key 48 7 Remove connecting part key 48 O rings keys 56 and 49 and if necessary the two guide rings rep 54 8 Remove spring key 55 and valve plug key 46 9 Unscrew bypass key 53 and remove valve O ring 10 Removing the seat key 52 not recommended from the body key 47 requires a special extraction tool Type PRX Pilot Maintenance Figure 23 Always remove spring key 7 tension before performing maintenance on this unit To remove spring tension loosen locknut key 2 and backout adjusting screw key 1 until compression is removed from the spring Lower Case Maintenance 1 Disconnect pilot and remove it from the line 2 Remove screws key 10 from lower cover key 21 and the separate lower cover from the body key 16 3 Usea wrench to hold the stem key 23 and break loose the stem nut key 20 Remove the stem nut and washer key 11 4 Remove the diaphragm plate key 13 diaphragm key 14 pad holder key 22 and O ring key 18 Inspect parts for damage or wear replace if necessary 5 Remove orifice key 19 and O ring key 17 Inspect the parts for damag
17. care to balance the upper actuator casing while removing the spring tension Carefully lift the upper actuator casing key 11 off the lower actuator casing key 5 Remove spring key 13 Remove screws key 16 Lift off diaphragm key 20 and the inlet plate key 18 Remove O rings keys 15 and 17 Inspect the diaphragm and O rings for damage or wear and replace if necessary Inspect the upper actuator casing key 11 O ring key 9 anti friction split rings key 8 and anti friction ring key 4 for damage or wear If damaged remove the O rings and split rings replace with new parts Lightly lubricate the 10 11 12 13 14 15 16 17 18 O ring and split rings Place the split rings in the body first then slide the O ring between the split rings Remove screws key 24 Lift off the lower actuator casing key 5 Remove screws key 33 and spring lock washers key 32 Lift off the disk holder assembly key 30 and disk retainer key 31 Slide the sleeve key 14 out of the lower actuator casing key 5 and slide the outlet plate key 19 off the sleeve Check the sleeve for scratches burrs or other damage and replace if necessary Remove the sleeve adaptor key 27 from the sleeve key 14 Take care not to damage the sleeve while removing the sleeve adaptor Check the O ring key 28 for damage and replace if necessary Place the sleeve adaptor on the sleeve and tighten Inspect the
18. the Type PRX port 5 Connect the PRX pilot port to the outlet pipeline at a minimum distance of 4 x D from the regulator s outlet flange 6 For Type EZHSO installation a vent valve downstream of the regulator is needed It should be installed directly in the Type PRX pilot bleed line connection line from port S to pipe A full bore NPS 1 4 ball valve for the vent line is preferred to provide sufficient flow Types EZH and EZHSO Wide Open Monitor Regulator 1 Follow the procedures in the All Installations section and then continue with step 2 of this section The sense and bleed control lines of both the upstream and downstream pilots will be connected to the downstream piping see Figure 13 2 Connect the pilot supply line for the downstream regulator to the outlet R port of the Type SA 2 pilot supply filter regulator Working Monitor Regulator 1 Follow the procedure in the All Installations section and then continue with step 2 of this section The sense line of the upstream monitor pilot and the bleed and sense lines of the downstream pilot will be connected to the downstream piping see Figure 14 2 Connect an inlet supply line from the upstream piping to the inlet M port of the downstream Type SA 2 pilot supply filter regulator 3 Connect a control sense line from the A port of the upstream working Type PRX pilot to the intermediate pressure portion of piping using 8 10 inside diameter tube
19. 00 EN 16B PN 25B PN 40B Type ARS MIE Tux Typo AR UEO RR WE PR pe res Horizontal Vertical Horizontal Vertical Horizontal Vertical 25 184 197 210 193 5 62 290 310 320 260 250 113 280 190 38 50 254 267 286 254 267 83 320 320 380 310 310 144 270 190 80 298 317 337 310 317 105 400 400 500 390 390 200 270 270 100 352 368 394 350 368 137 442 427 580 394 394 240 140 R117a Types EZH and EZHSO UPPER DIAPHRAGM mm TYPE 3 PRXA120 Es PILOT DISK gt TYPE FILTER SA 2 V r le m R B Li LI M A LOWER REGULATOR DIAPHRAGM DIAPHRAGM TYPE EZH EN inet pressure Pu E Wotorization pressure Pm TYPE PRX Pilot feeding pressure Pup S BLEED PORT TYPE SA 2 Outlet Pd B SUPPLY PORT V SENSING utlet pressure Pd L MOTORIZATION PORT R PILOT SS Atmospheric pressure Pb A SENSING PORT M INLET Figure 9 Type EZH DN 25 50 80 Spring to Close Version Operational Schematic The Types EZH and EZHSO regulators consist of Version without Integral Slam Shut Valve An E Body or an X Body plus a cap Acompensation valve an interchangeable orifice An actuator with position indicator Apilot system adapted to the required pressure setpoint Version with Integral Slam Shut Valve Same parts and sub assem
20. 1 Washer 12 Filter 18 Diaphragm plate 14 Diaphragm 15 Diaphragm plate oO O0 kou R110 16 Body 17 O ring 1 18 O ring 19 20 21 19 Orifice 2 20 Nut 21 Lower cover 3 22 Diaphragm plate 23 Stem v 4 24 Nameplate B 25 O ring 26 Nut 18 6 27 Damper adjusting screw 28 O ring 17 7 29 Plate O TT aa pru 30 Nut 16 e 31 Damper Restrictor screw A 15 A 32 Restrictor adjusting screw 9 33 Plug 34 Plug s 10 35 Spring barrel extension for AP Type SA 2 Pilot Supply Filter Regulator Figure 24 13 12 11 Key Description R111 1 Spring 2 Bolts Figure 24 Type SA 2 Assembly 3 Washer 4 Plate 5 Seat 6 O ring 7 Body 8 Filter net 9 Washer 10 Nut 11 Filter cover 12 Filter 13 O ring 14 Spring 15 Pad holder unit 16 Nameplate 17 Screw unit 18 Diaphragm 19 Regulator cover 20 Spring Washer 21 Nut Spare parts kit 34 Types EZH and EZHSO Figure 25 Type RPE Pilot Heater Figure 26 Check Valve 35 Types EZH and EZHSO Natural Gas Technologies Emerson Process Management Regulator Technologies Inc Francel SAS O M T Officina Meccanica Tartarini s r l Z A La Croix Saint Mathieu Via P Fabbri 1 28320 Gallardon France 40013 Castel Maggiore Bologna Italy Tel 33 0 2 37 33 47 00 Tel 39 051 4190611 Fax 33 0 2 37 31 46 56 Fax 39 051 4190715
21. 11213 DN 4 PA Standard EN 334 Cg See table 3 mere type is Cal d RE TRE N S rie Date Fab Test serial Mig Test date Ka PS bar af bar Pumax bar CLASS 20 60 C Class 2 y PX 150 300 600 16B 25B 40B J mat riau gt Pumax 189 50 100 16 25 40 pai A352LCC A350LF2 Ur 3 79 158 26 20 63 mam cat F HER end CEQOG2 P m9 50 1001 16151 Gaz Naturel Figure 4 Types EZH and EZHSO Label E Body Types EZH and EZHSO DIMENSIONS AND WEIGHTS DN 25 50 and 80 DN 100 Indicator cover Indicator cover removal clearance removal clearance 25 mm Mechanism box removal clearance 25 mm A Mechanism box removal clearance R112a Figure 5 Dimensions Types EZH OS2 and EZHSO OS2 Horizontal Position DN 25 50 80 and 100 H Table 5 Approximate Regulator Weights Types EZH OS2 and EZHSO OS2 DN WEIGHTS kg CL150 PN 16B CL300 PN 25B PN 40B CL600 25 49 50 51 50 81 83 85 80 168 175 177 100 237 250 265 For Type EZHSO OS2 version add 1 kg R113a Table 6a Dimensions Types EZH OS2 and EZHSO OS2 OVERALL DIMENSIONS mm DN F G Diaphragm Piston Bellows Diaphragm Piston Bellows 25 mm T 25 Mechanism box teen 30 181 204 223 162 71 74 Figure 6 Dimensions Types EZH OS2 and
22. 7 EI E laze y 1 R 3 o v 99 P TYPE PRX 120 TYPE PRX 120 AP Figure 2 PRX Series Pressure Reducing Pilots Types EZH EZHSO EZH OS2 and EZHSO OS2 regulators are in conformity with the Pressure Equipment Directive PED 97 23 EC and are classified in Category IV www fisherregulators com 4 EMERSON Process Management Types EZH and EZHSO INTRODUCTION Scope of Manual This manual provides installation startup maintenance and parts ordering information for the Types EZH and EZHSO pressure reducing regulators and Type PRX pilot with Type SA 2 pilot supply filter regulator Information on other equipment used with this regulator is found in separate manuals Product Description Types EZH and EZHSO regulators are accurate pilot operated pressure balanced soft seated regulators They are designed for use in high pressure natural gas transmission city gate stations large capacity distribution Systems and power plant feeds They provide smooth reliable operation tight shutoff and long life Type EZHSO Spring to Open version could be used when other overpressure protection options are foreseen for example in a monitor configuration In this case in event of failure the main regulator will stay completely open allowing the monitor to take control The monitor could be Spring to Close to ensure a double protection to downstream pipe Available Configurations Types EZH and EZH
23. Instruction Manual NTAEZH0811 November 2008 Rev 06 Types EZH and EZHSO Types EZH and EZHSO Pressure Reducing Regulators Contents gui cere Sei o ec 2 Characteristics 5 o D Ice tenete nine 3 EIE E 5 Dimensions and Weights sss 6 Descriptio aisinn eieae rE eines uns 8 Principle of Operation 8 Monitoring Systems 11 Tacit 13 Startup and Adjustment sene 15 Shutdown essssssssssseseeeeeeeneren nennen nennen 16 Maintenance sssssseseeeeeeeeeneren nennen nennen 17 Troubleshooting sese 24 Spare Pants unu e denis 25 Parts B 26 Failure to follow these instructions or to properly install and maintain this equipment could result in an explosion and or fire causing property damage and personal injury or death Fisher regulators must be installed operated and maintained in accordance with federal state and local codes rules and regulations and Emerson Process Management Regulator Technologies Inc Regulator Technologies instructions If the regulator vents gas or a leak develops in the system service to the unit may be required Failure to correct trouble could result in a hazardous condition Call a gas service person to service the unit Only a qualified person must install or service the regulator Figure 1 Type EZH Pressure Reducing Regulator e ba w e ret on A E
24. Monitor setpoints are set slightly higher than senses the system s outlet pressure If the working regulator the main regulator However the value of this difference fails the monitoring pilot Type PRX 125 or PRX 125 AP will cannot be determined in advance as it depends on the sense the increase in outlet pressure and take control particular characteristics of each application 12 Types EZH and EZHSO TYPE PRX 120 TYPE PRX 125 H m el ES e Dy TYPE PRX 120 TYPE SA 2 R2 gt REI D s E I 1 SE Sech TYPE EZH ENS inlet pressure Pu EM Wotorization pressure Pm Pilot feeding pressure Pup Outlet pressure Pd Atmospheric pressure Pb TYPE PRX S BLEED PORT B SUPPLY PORT L MOTORIZATION PORT R PILOT A SENSING PORT M INLET TYPE SA 2 V SENSING TYPE EZH R100 Figure 14 Working Monitoring System Operational Schematic with Two EZH Spring to Close for DN 25 50 and 80 The schematic from Figure 14 represents the configuration for the DN 25 50 and 80 for the DN 100 the schematic remains the same with
25. S r L G3 6281 30 29 Figure 17 Type EZH Main Valve Assembly DN 100 28 OO 0000 Types EZH and EZHSO 2HARAH CPGE e IW T ET NY RSA PEN DR 1 2 Yj um ceres pss TU UT TT TEL EN ai E Pf EE eer ICT SS par PM P ae SER GU AS T SS ee pq un pb agg a O B AN T Il LU P eD qy SS TYPE EZHSO DN 25 VERSION ONLY ERIK VA n WZ N Ue TWN D N E Sar EK amp g E NEAR T R S NS I B b D000 666 60006 606 bb Figure 18 Type EZHSO Main Valve Assembly DN 25 50 and 80 Types EZH and EZHSO TRAVEL INDICATOR DETAIL 146 66 67 208 ech MO 20006 598 E 30 154 29 34 M Figure 19 Type EZHSO Main Valve Assembly DN 100 30 Types EZH and EZHSO E e e x 2 y Ei Ww we Wu WD ml Jo T H mr mM an dM QUI A Pm A 7 EM 8 Ki ea S D Ee ET JW m om E LA
26. SO E Body Single regulator without slam shut Types EZH and EZHSO X Body Single regulator in a X Body In case of modification made on a pressure equipment like cap replacement by a slam shut it s mandatory to comply to the local codes rules and regulations Contact us imperatively Types EZH OS2 and EZHSO OS2 X Body Single regulator with integrated slam shut Pilot Description Type PRX Pilot The Types EZH and EZHSO pressure reducing regulators can be equipped with a PRX Series pilot mounted on the main valve for pressure reducing or wide open monitoring applications The PRX Series pressure reducing pilots have the ability to handle a wide range of setpoints from 1 to 80 bar Type PRX 120 Outlet pressure range of 1 to 40 bar The Type PRX 120 can be used as the pilot on single stage pressure reducing regulators as the monitor pilot or as the working pilot in wide open monitor systems Type PRX 120 AP Outlet pressure range of 30 to 80 bar The Type PRX 120 AP can be used as the pilot on single stage pressure reducing regulators as the monitor pilot or as the working pilot in wide open monitor systems Type PRX 125 Identical to the Type PRX 120 except the restriction screw is removed The Type PRX 125 can only be used as the monitor override pilot on working monitor applications Type PRX 125 AP Identical to the Type PRX 120 AP except the restriction screw is removed The Type PR
27. X 125 AP can only be used as the monitor override pilot on working monitor applications Type SA 2 Pilot Supply Filter Regulator The Type SA 2 pilot supply filter regulator provides a constant pressure supply to the PRX Series pilot of 3 bar over the set pressure The Type SA 2 has an integral 5 micron filter For easy maintenance a block valve can be installed to separate the regulator from the pilot Regulator Options Silencer Figure 22 The Type EZH silencer Whisper III is integrated in the regulator and is composed of a drilled cage The Whisper III silencer is available for DN 25 50 80 and 100 and allows a noise attenuation up to 8dB Flow Coefficient Reduction Figure 16 The flow reduction is realised by replacement of the regulator standard seat by a reduction seat key 2 Type RPE Electrical Pilot Heater Figure 25 The Type RPE is used for reheating the gas supplying pressure reducing regulator pilots The Type RPE avoids the inconveniences caused by freezing which can occur during high pressure drops Actuator The actuator is an integral pressure type All pressure parts are designed to resist up to 100 bar The diaphragm is strong and can resist to a differential of 100 bar Types EZH and EZHSO CHARACTERISTICS Table 1 General Characteristics for Types EZH and EZHSO Regulator 1 BMS Safety Manometric Box 3 Contact us wit
28. ary Unscrew 8 bolts key 6 and remove washer key 67 Lift off lower casing key 5 Inspect O rings key 7 and key 63 for damage or wear replace them if necessary 5 Remove cage key 78 6 Remove seat ring key 2 Inspect seat ring for damage or wear If damaged replace with new parts 7 Remove O ring key 34 from body Inspect for damage or wear If damaged replace with new parts 8 Lubricate O ring key 34 and replace into the body 9 Place seat ring key 2 on top of O ring in body 10 Place cage key 78 on the top of seat ring key 2 11 Place lower casing key 5 on top of body Replace washer key 67 and tighten bolts key 6 Screw sleeve guide into lower casing key 5 utilizing cap key 70 12 Lubricate the sleeve key 14 in the upper plate contact area and assemble the diaphragm plates system on the sleeve system Tighten screws key 16 using a star criss cross pattern for five times until proper specified torque is achieved 21 Types EZH and EZHSO 13 14 15 16 17 18 19 20 21 Screw the smart screws key 68 already on the sleeve to fix the diaphragm plates system on the sleeve system See Torque Specification table for proper torque Tighten screws key 68 using a star criss cross pattern until proper specified torque is achieved Lubricate lower casing key 5 on the diaphragm contact area Carefully insert the trim system into the slee
29. blies as in the version without slam shut An X Body Avalve with tight shut off O ring An automatic slam shut bypass Arelease relay Type OS2 see instruction manual NTAOS2 consisting of A mechanism box BM A safety manometric box BMS connected to the outlet side of the regulator Type EZH Spring to Close Version Type EZH Single Pilot Regulator Figures 9 and 10 The pilot operated Type EZH uses inlet pressure as the operating medium which is reduced through pilot operation to load the actuator diaphragm Outlet pressure Pd opposes the motorization pressure Pm in the actuator and also opposes the pilot control spring When the outlet pressure Pd drops below the setting of the pilot control spring pilot control spring force on the pilot diaphragm thus opens the pilot valve plug providing additional motorization pressure Pm to the actuator diaphragm This diaphragm motorization pressure opens the main valve plug supplying the required flow to the downstream system Any excess motorization pressure on the actuator diaphragm escapes downstream through the bleed restriction in the pilot Types EZH and EZHSO E intet pressure Pu EZ Wotorization pressure Pm TYPE PRX F Pilot feeding pressure Pup S BLEED PORT TYPE SA 2 Outlet Pd B SUPPLY PORT V SENSING utlet pressure Pd L MOTORIZATION PORT R PILOT Atmospheric pressure Pb A SENSING PORT M INLET
30. ction 3 1 M0300710X12 M0300720X12 M0300730X12 M0303410X12 ERAA00276A0 161 Silencer Whisper III 1 ERAA00238A0 GE37959X012 GE38021X012 M0303520X12 M0303520X12 PILOT SPARE PARTS 4 5 14 17 18 22 25 Type PRX kit Figure 22 1 M2200685X12 and 28 6 n m Type SA 2 kit Figure 23 1 M2200250X12 R119 25 Types EZH and EZHSO PARTS LIST Type EZH Figures 16 17 18 and 19 Key Description 1 Body 2 Seat 3 Cage 4 Anti friction ring 5 Actuator lower casing 6 Cap screws 7 O ring 8 Anti friction ring 9 O ring 10 Pipe Plug 11 Actuator upper casing 18 Spring 14 Sleeve 15 O ring 16 Screw 17 O ring 18 Inlet plate 19 Outlet plate 20 Diaphragm 21 Screw 22 Washer 23 Nut 24 Screw 25 Intermediate flange 27 Sleeve adaptor 28 O ring 29 O ring 30 Disk holder assembly 31 Disk retainer 32 Lock washer 33 Socket head cap screw 34 O ring 35 Bracket 38 Travel indicator plug 44 Adjusting screw cap 61 Sleeve guide 62 O ring 63 O ring 64 O ring 66 Screw 67 Washer 68 Smart screw 69 O ring 70 Cap 71 O ring 72 Lock washer 73 Upper spring seat 74 Socket head cap screw 75 O ring 77 Screw 78 Cage 82 Lower spring seat 83 Ball bearings 138 Indicator cover 139 Stem 140 Indicator bushing 141 Fitting 142 O ring 143 O ring 144 Spring collet 145 Retaining ring 192 Nameplate Spare parts kit 26 Type EZHSO Figures 18 and 19 Key 146 147 148 149 150 151 152 153 154 155 156 157
31. e Torque Specification table for proper torque Lubricate the sleeve key 14 Carefully insert the trim system into the sleeve guide key 61 utilizing eye bolt key 35 Align sleeve utilizing the socket head cap screw key 74 as a guide Screw smart screws key 68 to affix the sleeve system See Torque Specification table for proper torque Remove eye bolt key 35 from ring nut key 73 threaded hole Carefully place the cap on the upper casing key 11 Lubricate cap screws key 77 and attach cap key 70 to the upper casing using cap screws key 77 See Torque Specification table for proper torque Note Rotate the cap such that the outer holes for sensing lines are in line with upper casing holes for sensing lines to validate the alignment and before attaching cap check that travel indicator is aligned on the cap and on the upper casing Mount O ring key 75 on the cap Screw the eye bolts key 35 on the cap key 70 Disk Maintenance Type EZHSO DN 100 Figure 19 als 2 10 11 12 13 14 15 16 17 18 Remove cap screws key 77 Carefully lift the cap key 70 off of the upper casing key 11 Remove O ring key 75 Inspect the O ring for damage or wear and replace if necessary Remove O ring key 69 Inspect the O ring for damage or wear and replace if necessary Lubricate O ring before placing inside cap Remove special screws key 68 from sleeve Carefully
32. e or wear and replace if necessary Lightly lubricate the O ring and place in the body key 16 Install the orifice 6 Setthe pad holder key 22 in the body key 16 7 Lightly lubricate the rims of the diaphragm key 14 and place it on top of the pad holder key 22 Set the diaphragm plate key 13 on the diaphragm key 14 8 Lightly lubricate the O ring key 18 and place it in the lower case key 21 9 Place the washer key 11 and stem nut key 20 on the stem key 23 and tighten If also performing upper case maintenance skip to step 2 of Upper Case Maintenance section 10 Insert screws key 10 in the lower cover key 21 and tighten uniformly to ensure proper seal Types EZH and EZHSO Upper Case Maintenance 10 11 Disconnect pilot and remove it from the line Loosen locknut key 2 and backout adjusting screw key 1 until compression is removed from the spring Remove cap key 3 Lift the spring carrier key 6 the spring key 7 and O ring key 4 out of the upper cover key 8 Inspect the O ring and replace if necessary Remove screws key 10 from lower cover key 21 and separate lower cover from the body key 16 unless removed during lower diaphragm maintenance Use a wrench to hold stem key 19 securely while removing the stem nut key 26 Remove remaining loose components washer upper diaphragm plate diaphragm lower diaphragm plate and O rings keys 11 13 14 15 18 a
33. ecommended When assembling with adjacent elements take care not to create pressure force on the body The assembling elements bolts O rings flanges should be compatible with the geometry and working conditions of the equipment If the case arises a support must be used to avoid pressure force on the body a support can be installed under the flanges 13 Types EZH and EZHSO Connect the actuator to the impulse plug keeping a minimum distance of 4 x D to a straight run of the outlet pipe In the version with integrated slam shut connect the safety manometric box BMS to the outlet pipe keeping a minimum distance of 4 x D to a straight run of the pipe In the case of functioning class B for the slam shut it is necessary to regularly check the safety manometric box BMS diaphragm Connect the reject tab to the outlet pipe It is recommended to separate the slam shut impulse from that of the actuator Do not connect impulses on the lower generator line It is recommended to install and isolation tap and a vent tap These can be useful for slam shut settings and verifications Check that the pilot impulse is connected and in the case of an isolating tap not recommended that it is open No modification should be made to the structure of the equipment drilling grinding soldering It is recommended to install a servicing valve on the outlet pipeline to facilitate adjustments and bleeding off to the atmosph
34. emove O rings keys 15 and 17 Inspect the diaphragm and O rings for damage or wear and replace if necessary Inspect the upper actuator casing key 11 O ring key 9 anti friction split rings key 8 and anti friction ring key 4 for damage or wear If damaged remove the O ring and split rings and replace with new parts Lightly lubricate the O ring and split rings Place the split rings in the body first then slide the O ring between the split rings Remove screws key 24 Lift off the lower actuator casing key 5 Remove the hex socket cap screw key 154 Lift off the disk holder assembly key 30 Slide the sleeve key 14 out of the lower actuator casing key 5 and slide the outlet plate key 19 off of the sleeve Check the sleeve for scratches burrs or other damage and replace if necessary Inspect the lower actuator casing key 5 O ring key 9 anti friction split rings key 8 and anti friction ring key 4 for damage or wear If damaged remove the O ring and split rings and replace with new parts Lightly lubricate the O ring and split rings Place the split rings in the body first then slide the O ring between the split rings Slide the outlet plate key 19 onto the sleeve key 14 and slide the sleeve into the lower actuator casing key 5 Place the disk holder assembly key 30 on the sleeve adaptor key 27 Insert the hex socket cap screw key 154 and tighten See Torque Specification able fo
35. er actuator casing key 11 if present and tighten the travel indicator fitting key 141 Type EZHSO DN 100 Actuator Assembly Maintenance Figure 19 1 Remove closing cap key 146 unscrew 2 nuts key 151 If present remove travel indicator assembly by unscrewing the travel indicator fitting key 141 then pull out the stem key 139 2 Remove hex head cap screws key 21 washers key 22 and hex nuts key 23 Carefully lift the upper actuator casing key 11 off the lower actuator casing key 5 Inspect the upper actuator casing key 11 O rings key 158 and anti friction rings key 157 for damage or wear If damaged remove and replace with new parts Place the anti friction rings in the cap first then slide the O ring between the anti friction rings 3 Unscrew 8 smart screws key 68 Lift up and remove the sleeve assembly key 14 Lift off the diaphragm plates system Remove O ring key 15 and replace as needed Inspect diaphragm key 20 for damage or wear remove screws key 16 lift off inlet plate key 18 to replace diaphragm and O ring key 17 if necessary 4 Unscrew 8 screws key 77 to remove cap key 70 from the upper casing key 5 Align screw holes on the cap key 70 to the sleeve guide screw key 66 Remove sleeve guide key 61 utilizing cap key 70 to unscrew Inspect O rings key 8 key 64 and key 153 for damage or wear replace anti friction ring key 9 and O ring key 8 if necess
36. ere In the version with integral slam shut verify that the safety manometric box BMS and spring correspond to the appropriate operating conditions on the outlet side of the regulator The equipment should not receive any type of shock especially the release relay The user should verify or carry out a protection adapted to the environment For DN 25 to 80 use long screws or threaded stems when opening the actuator warning compressed spring The action of fire seismic and lightening are not taken into consideration in standard regulators If required a special product selection and or specific calculations may be supplied according to specific requirements A regulator may vent some gas to the atmosphere In hazardous or flammable gas service vented gas may accumulate causing personal injury death or property damage due to bursting of pressure retaining parts Vent a regulator in hazardous gas service to a remote safe location away from air intakes or any hazardous location The vent line or stack opening must be protected against condensation or clogging 14 All Installations Single Regulator or Monitor Systems A Type EZH or EZHSO regulator bleeds no gas to atmosphere during normal operation thus making the regulator suitable for installation in pits and other enclosed locations without elaborate venting systems This regulator can also be installed in pits subject to flooding by venting the pilot s
37. h your operating conditions OPERATING PRESSURE SLAM SHUT ira d Valve PS 100 bar max European EN Standard EN 14382 y Operation Class Aor B see Figure 3 Associated BMS according to size PSD 10 to 100 bar Maximum Operating Differential AP max 100 bar Type IS Integral strength Response Time ta is OPERATING TEMPERATURE TS 20 60 C Class 2 i iiie Up to 42 5 Sizes available DN 25 50 80 and 100 Accuracy ellows AG Noise level reduction Up to 8 dB Piston Up to 5 REGULATOR Set Pressure Range Wdu Wdo 0 010 100 bar Flow Coefficient Q 13 European EN Standard EN 334 fma USE internal Automatic ass Inlet Pressure Pu 2 to 100 bar B E Tm 3 me i t tificati t Outlet Pressure Pd 1 to 80 bar Section y See er E ication of tau osition Indicator n mechanism box Minimum Differential AP min 1 bar Type EZH e 3 8 bar Type EZHSO Fluid Maximum Differential AP max m ped que SE Groups 1 and 2 according to PED 97 23 EC Gas 1 and 2 family according to 2 bar Type EN 437 or other gases compressed air nitrogen Accuracy optimal AC See Table 2 The gas must be non corrosive clean Lock Up Pressure Class SG Up to 5969 filtration on inlet side necessary and dry Lock Up Pressure Zone Class ER Up to 5969 2 Standard version 4 Depending on BMS configuration for Type EZH OS2 Table 2 Outlet Pressure Ranges Accuracy Class and Pilot Spring Information
38. ing and lower actuator casing assembly keys 11 and 5 and place on the body key 1 Secure the screws key 24 See Torque Specification table for proper torque Disk Maintenance Type EZH DN 100 Figure 17 1 Remove screws key 77 2 Carefully lift the cap key 70 off the upper casing key 11 and unscrew the eye bolts key 35 from the cap key 70 17 Types EZH and EZHSO 10 11 12 13 14 15 16 17 18 19 20 21 22 18 Remove the O ring key 75 Inspect for damage or wear and replace if necessary Remove the O ring key 69 Inspect for damage or wear and replace if necessary Lightly lubricate O ring before placing inside cap key 70 Remove smart screws key 68 from sleeve Fit eye bolt key 35 into ring nut key 73 threaded hole Carefully remove the trim system from the sleeve guide utilizing the eye bolt key 35 Remove the hex socket cap screws key 33 and lock washers key 32 Lift off the disk retainer key 31 and disk assembly key 30 Inspect for damage or wear and replace if necessary Remove the O ring key 29 Inspect the O ring for damage or wear and replace if necessary Place disk assembly key 30 onto disk retainer key 31 Place disk retainer assembly into sleeve adapter key 27 and align screw holes Place lock washer key 32 on screws key 33 Screw together the disk retainer assembly into the sleeve adapter assembly Se
39. ion pressure to the actuator diaphragm the pressure in the upper case will force the regulator to close For Type EZHSO DN 100 a check valve Figure 26 is installed between outlet pressure and loading pressure 10 impulse lines this valve will protect the diaphragm assembly from wrong procedures during startup avoiding a too high pressure differential between outlet and motorization pressure EZH and EZHSO Series Adjustment The adjustment of the regulator is performed by means of the pilot adjusting screw which causes variation of the compression of the control spring Adjustment is performed while the regulator is in operation with the aid of a pressure gauge to monitor downstream pressure The shut off valve downstream of the regulator must not be completely closed it is necessary that a small quantity of gas flows downstream to allow the outlet side to vent when it is necessary to lower the pressure Loosen the Type PRX pilot locknut and turn the adjusting screw slowly clockwise to increase outlet pressure and counterclockwise to decrease outlet pressure Use a pressure gauge to monitor the outlet pressure until the desired pressure is reached No adjustment is needed to the Type SA 2 stabilizer filter Types EZH and EZHSO BEN intet pressure Pu E Wotorization pressure Pm TYPE PRX Pilot feeding pressure Pup S BLEED PORT TYPE SA 2 Outlet Pd B SUPPLY PORT V SENSING
40. lines of the regulator and wide open monitor as well The working regulator must be rated for the maximum allowable operating pressure of the system because this will be its inlet pressure if the monitoring regulator fails Also the Working Monitor System with PRX Pilot outlet pressure rating of the monitoring Figure 14 pilot Type PRX 125 or PRX 125 AP and any other components that are exposed to the intermediate pressure must be rated for full In a working monitoring system the upstream regulator inlet pressure requires two pilots and it is always the monitoring regulator The additional pilot PRX 125 or PRX 125 AP permits the monitoring regulator to act as a series regulator to control an Working monitor installations require a Type EZH or EZHSO intermediate pressure during normal operation In this way main valve with a Type PRX 120 or PRX 120 AP working both units are always operating and can be easily checked pilot a Type PRX 125 or PRX 125 AP monitoring pilot for for proper operation the upstream regulator and a Type EZH or EZHSO with the appropriate Type PRX 120 or PRX 120 AP pilot for the In normal operation the working regulator controls the outlet downstream regulator pressure of the system The monitoring regulator s working pilot Type PRX 120 or PRX 120 AP controls the intermediate Adjusting the monitor regulator is the same as adjusting the pressure and the monitor pilot Type PRX 125 or PRX 125 AP main regulator
41. lower actuator casing key 5 O ring key 9 anti friction split rings key 8 and anti friction ring key 4 for damage or wear If damaged remove the O ring and split rings replace with new parts Lightly lubricate the O ring and split rings Place the split rings in the body first then slide the O ring between the split rings Slide the outlet plate key 19 onto the sleeve key 14 and slide the sleeve into the lower actuator casing key 5 Place the disk holder key 30 and disk retainer key 31 on the sleeve adaptor key 27 Insert the spring lock washers key 32 and screws key 33 and tighten See Torque Specification table for proper torque Lightly lubricate the O rings keys 15 and 17 and the inner and outer diaphragm key 20 edges Place the inlet plate key 18 and the diaphragm key 20 on the sleeve key 14 Make sure O rings key 15 and 17 are correctly positioned Insert and tighten the hex socket cap screws key 16 See Torque Specification table for proper torque Carefully lift the lower actuator casing assembly key 5 and place on the body key 1 Take care to match up the alignment marks Secure with screws key 24 See Torque Specification table for proper torque Lightly lubricate the spring key 13 and place on the inlet plate key 18 Carefully place the upper actuator casing key 11 on the lower actuator casing key 5 Take care to match up the alignment marks Insert the two threaded
42. lve plug gt Open Stages 2 and 3 gt Progressively increase the pressure until tripping occurs gt Adjust setting if necessary NTAOS2 Note the set point value on the equipment or mark it on a commissioning document STOP e OS SN I R121 TRIGGERED POSITION STAGE 1 STAGES 2 AND 3 Figure 15 Setpoint Verification Phase 16 Type PRX Pilot Adjustment To adjust a standard Type PRX pilot loosen the locknut and turn the adjusting screw Turning the adjusting screw clockwise into the spring case increases the spring compression and pressure setting Turning the adjusting screw counter clockwise decreases the spring compression and pressure setting When the required pressure setting is maintained for several minutes tighten the locknut to lock the adjusting screw in position Type PRX Pilot Restrictor and Damper Screw Adjustment Note Recommended initial setting of the restrictor screw is turned completely in clockwise and then turned out 1 2 turn The damper screw initial setting is turned completely out counter clockwise The Type PRX 125 upstream monitor pilot in working monitor installations does not have a restrictor screw The restrictor screw of the Type PRX pilot can be used if there is hunting of the set pressure Slowly turning out the restrictor screw counterclockwise will help steady the set pressure Turning out the restrictor screw will slightly decrease set pressure so adjus
43. n 5 Note When using a Type PRX 120 pilot with a Type PRX 125 pilot as monitor follow these steps e Restrictor completely tighten and then back out three full turns e Damper back out until it stops Install plate key 29 and screw key 31 Type SA 2 Pilot Supply Filter Regulator Maintenance Figure 24 1 10 11 12 13 14 Disconnect pilot supply filter regulator and remove it from the line Remove bolts washers and nuts keys 2 9 and 10 from the body key 7 then separate upper and lower covers keys 19 and 11 from the body key 7 When separating the covers from the body be aware of loose components keys 1 3 4 8 12 18 20 and 21 Remove and inspect O ring key 13 for damage or wear and replace if necessary Lightly lubricate the O ring before placing it back in the filter cover key 11 Clean nets key 8 Replace filter pad key 12 Inspect diaphragm key 18 for damage or wear and replace if necessary Check the seating surface of the screw unit key 17 for erosion scratches spurs or other damage and replace if necessary Unscrew and remove the regulator seat key 5 Inspect the O ring key 6 for damage or wear and replace if necessary Lightly lubricate the O ring and place it on the regulator seat Pull pad holder unit key 15 out of the body key 7 Inspect the seat for damage replace if necessary Set the filter net key 8 on the spring key 14
44. n 3 4 STEM NUT HEX NUT STEM NUT on Key 151 Figures 18 and 19 Key 152 Figures 18 and 19 Key 155 Figures 18 METRIC SPANNER Une METRIC SPANNER ORAU METRIC SPANNER Longue N m N m N m 25 M8 SPECIAL 19 41 43 50 54 M10 17 80 M12 19 81 100 68 SPARE PARTS Different parts of the equipment are subject to normal wear they must be checked periodically and replaced if necessary R118 The frequency of control and replacement of parts depends on the working conditions as well as any applicable codes and regulations Table 11 Spare Parts KEY DESCRIPTION QUANTITY DN 25 DN 50 DN 80 DN 100 STANDARD SPARE PARTS Figures 16 17 18 19 and 20 Type EZH OS2 kit 197569 197570 197571 197824 Type EZH kit 197575 197576 197577 197826 Type EZHSO OS2 kit 197889 197890 197891 197908 Type EZHSO kit 197895 197896 197897 197907 Slam shut installation kit 197785 197786 197787 197827 Type OS2 release relay Refer to NTAOS2 manual TYPES EZH AND TYPES EZH AND TYPES EZH AND TYPE EZH TYPE EZHSO EV DIEU En VALEUR EZHSO DN 25 EZHSO DN 50 EZHSO DN 80 DN 100 DN 100 OPTIONAL SPARE PARTS Figures 16 17 18 and 22 Standard regulator seat 1 GD29726X012 GD29581X012 GD29732X012 M0303250X12 ERAA00273A0 2 Seat reduction 1 1 M0300940X12 M0300950X12 M0300960X12 M0303430X12 ERAA00274A0 Seat reduction 2 1 M0300910X12 M0300920X12 M0300930X12 M0303420X12 ERAA00275A0 Seat redu
45. nce The Type SA 2 can be removed if differential pressure across the regulator is less than 3 bar and inlet pressure stays at or below 13 8 bar Startup Type EZH Startup 1 Make sure all block valves vent valves and control line valve s are closed 2 Back out the pilot adjusting screw s 3 Slowly open the valves in the following order Inlet block valves Pilot supply and control line valve s if used 4 Crack open the outlet block valve or bypass valve to allow minimum flow 5 After adjusting the Type PRX pilot s to the desired pressure setting s slowly open the downstream block valve wide open 6 Close the bypass valve if used Type EZHSO Startup 1 Make sure all block valves except valve R4 vent valves and control line valve s are closed Back out the pilot adjusting screw s Introduce upstream pressure by slowly opening inlet valve Slowly open valve R2 Open valve R3 Close valve R4 the regulator Type EZHSO close Open valve R4 Close valve R3 oN oo RB o m Slowly open downstream valve making sure that there is a constant sufficient pressure drop across the regulator If downstream pressure climbs too close to upstream pressure the regulator will again fully open In this case start up procedure needs to be repeated 15 Types EZH and EZHSO For a single regulator set the pilot to the desired outlet control pressure according to the Pilot Adjustment procedure
46. nd 25 Inspect diaphragm and O rings for damage or wear and replace if necessary Lightly lubricate the O ring key 25 Place the O ring over the stem key 19 and press it down into the body key 16 Set the lower diaphragm plate key 15 into the body key 16 Lightly lubricate the rims of the diaphragm key 14 and place it in the body key 16 on top of the lower diaphragm plate key 15 Set the upper diaphragm plate key 13 on top of the diaphragm key 14 Place washer key 11 and stem nut key 26 on the stem key 23 and tighten using a wrench to hold the stem Set the spring carrier key 6 Damper and Restrictor Maintenance m 2 3 Remove the screw key 31 and plate key 29 Remove bolts key 30 Remove the damper adjusting screw key 27 Remove and inspect O ring key 28 for damage or wear and replace if necessary Lightly lubricate O ring before placing on the adjusting screw Insert damper adjusting screw into the body key 16 and tighten Insert ring nut key 30 and tighten Back out damper adjusting screw until it stops Remove restrictor adjusting screw with hole key 32 Remove and inspect O ring key 28 for damage or wear and replace if necessary Lightly lubricate O ring before placing on the adjusting screw Insert restrictor adjusting screw into the body key 16 and completely tighten Insert ring nut key 30 and completely tighten Back out restrictor adjusting screw 1 2 tur
47. ng maintenance operations Use proper lifting techniques when lifting the upper and lower actuator casings keys 11 and 5 Figure 16 off the body key 1 Figure 16 The actuator assembly weighs more than 45 kg Main Valve and Actuator Maintenance Disk Maintenance DN 25 50 and 80 Figure 16 Type EZH Disk Maintenance Remove screws key 24 m Carefully lift the upper actuator casing and lower actuator casing assembly keys 11 and 5 off the body key 1 e Remove the hex socket cap screws key 33 and spring lock washers key 32 Lift off the disk holder assembly key 30 and disk retainer key 31 gt Remove the O ring key 29 Inspect the O ring for damage or wear and replace if necessary Lightly lubricate O ring before placing in the sleeve adaptor key 27 e Remove the cage key 3 seat ring key 2 and O ring key 34 Inspect the O ring for damage or wear and replace if necessary Lightly lubricate O ring before placing in the body key 1 6 Setthe seat ring key 2 back in the body key 1 with the curved side down and the seat edge up To check O ring key 7 skip to the Intermediate Flange O ring Maintenance section Place the cage key 3 on top of seat ring The cage will engage the step on the seat ring 7 Place the disk holder assembly key 30 and disk retainer key 31 on the sleeve adaptor key 27 8 Insert the spring lock washers key 32 and hex socket cap screw
48. ng of Not proper pressures and charge EZHSD Open ES Regulator performance of Debris or aromatics or discharge of Diaphragm i ahaa present in the gas the motorization P pressure chamber EZH Close Type SA 2 loading upper casing of EZHSO Close Pilot Frozen Pilot Moisture in the gas regulator Pilot Type SA 2 working high pressure drop not supplying loading pressure EZH e Close to lower casing R96B Types EZH and EZHSO Connections Inlet Outlet CL150 RF CL300 RF CL600 RF PN 16B PN 25B PN 40B Other configurations available contact factory Pilot feed Pilot Reject Pilot impulse Slam shut impulse BM vent Impulse tube diameter Contact switch BM Mechanism Box LABELLING 1 4 NPT female 1 4 NPT female 1 4 NPT female 1 4 NPT female 1 4 NPT female Interior 8 10 mm See NTAOS2 REGULATEUR REGULATOR SECURITE SLAM SHUT He Jj 1 GROUPE N s rie serial Standard EN 1432 Material Body Connecting parts and bottom Actuator Regulator Slam shut orifice Regulator valve plug Slam shut valve plug Regulator plug disc Slam shut O rings Steel Steel Steel Stainless steel Stainless steel Stainless steel Nitrile NBR or Fluorocarbon FKM BMS Setting Security class Maxony BMS 027 017 BNS 162 EE BMS
49. ping verification for versions with integral slam shut nlet valve gt Closed Outlet valve gt Closed Observe the evolution of the outlet pressure Control regulator tightness Regulator Table 9 Troubleshooting for Types EZH and EZHSO Regulators SYMPTOMS If outlet pressure is stable CAUSE ACTIONS If inlet pressure decreases Observe the evolution of the inlet pressure External leak Locate and repair leak or contact after sales If inlet pressure is stable If the slam shut valve plug will not close The regulator is tightshut Operation faulty Increase the set point until tripping occurs without exceeding the outlet limits Control the release relay Control the slam shut valve plug or contact after sales If the slam shut valve plug closes Operation correct Bleed off outlet side If the outlet pressure increases Valve plug internal leak Close the vent and observe the evolution of the outlet pressure Control the release relay Control the valve plug and slam shut orifice or contact after sales If the outlet pressure is stable The valve plug is tightshut If the outlet pressure increases Internal leak Close pilot feed If the outlet pressure stabilises Pilot leak Control the pilot valve plug or contact after sales If the outlet pressure increases Regulator internal leak Control valve plug and orifice or contact after sales
50. pressure Pm TYPE PRX S BLEED PORT B SUPPLY PORT L MOTORIZATION PORT R PILOT A SENSING PORT M INLET Pilot feeding pressure Pup Outlet pressure Pd E Atmospheric pressure Pb TYPE SA 2 V SENSING PILOT DISK REGULATOR DIAPHRAGM R3 pee R4 TYPE EZHSO Figure 11 Type EZHSO DN 25 50 80 Spring to Open Version Operational Schematic Type EZHSO uses inlet pressure as the operating medium which is reduced through pilot operation to load the actuator diaphragm lower chamber The upper case of Type EZHSO actuator is filled with pressure coming from pre regulator Type SA 2 which reduces inlet pressure Pu to the constant value of outlet pressure plus approximately 3 bar This pressure opposes the main spring force that tends to open the regulator Outlet or downstream pressure Pd opposes the pilot control spring When outlet pressure drops below the setting of the pilot control spring pilot control spring force on the pilot diaphragm opens the pilot valve plug providing additional motorization pressure Pm to the actuator diaphragm This diaphragm motorization pressure opens the main valve plug supplying the required flow to the downstream system Any excess motorization pressure on the actuator diaphragm escapes downstream through the bleed restriction in the pilot When outlet pressure increases over the setting of the pilot spring the pilot valve plug will be closed reducing motorizat
51. pring case above the expected flood level so that the pilot setting can be referenced to atmospheric pressure 1 Install the regulator so that the flow arrow on the main valve matches the flow direction of process fluid through the regulator 2 Apply pipe compound to the male pipeline threads before installing a regulator with threaded NPT end connections Use gaskets between pipeline and regulator flanges when installing a regulator with flanged end connections When installing buttweld end connections remove trim before welding and make sure to use approved welding practices Use approved piping procedures when installing the regulator 3 Type PRX pilots have a 1 4 inch NPT vent connection in the spring case To remotely vent gas from the spring case remove the screened vent and connect 1 4 inch piping or tubing to the spring case connection The piping or tubing should vent to a safe location have as few elbows as possible and have a screened vent on it s exhaust Install the regulator and any remote vent piping or tubing so that the vent is protected from condensation freezing or substances that my clog it To avoid freeze up due to pressure drop and moisture in the gas use anti freeze practices such as heating the supply gas or adding a de icing agent to the supply gas 4 Connect the actuator to the downstream sense line on a straight run of outlet pipe 8 10 inside diameter Connect the other end of that impulse to
52. r proper torque Lightly lubricate the O rings keys 15 and 17 and the inner and outer diaphragm key 20 edges Place the inlet plate key 18 and the diaphragm key 20 on the 12 13 14 15 sleeve key 14 Make sure O rings keys 15 and 17 are correctly positioned Insert and tighten the hex Socket cap screws key 16 See Torque Specification table for proper torque Carefully lift the lower actuator casing assembly key 5 and place on the body key 1 Make sure to match up the alignment marks Secure with screws key 24 See Torque Specification table for proper torque Carefully place the upper actuator casing key 11 on the lower actuator casing key 5 Make sure to match up the alignment marks Insert the two long bolts 180 apart and away from flanges Place the washers key 22 hex nuts key 23 and brackets key 35 on the long bolts and evenly tighten Using proper bolting techniques install remaining short cap screws key 21 washers and hex nuts See Torque Specification table for proper torque Tighten hex nuts key 151 install protective cap key 146 Place travel indicator assembly keys 138 139 140 141 142 143 144 145 and 192 in the upper actuator casing key 11 if present and tighten the travel indicator fitting key 141 Type EZH DN 100 Actuator Assembly Maintenance Figure 17 1 Remove travel indicator assembly keys 71 138 139 140 141 142 143 144 145 and
53. remove the trim system from the sleeve guide utilizing the eye bolt key 35 or stem nut Remove socket head cap screws key 154 Lift off the disk holder assembly key 30 Remove the O ring key 29 Inspect the O ring for damage or wear and replace if necessary Lightly lubricate O ring before placing in the sleeve adaptor key 27 Place disk holder assembly key 30 into sleeve adaptor key 27 and align screw holes Place on screws key 154 Screw together the disk holder assembly into the sleeve adaptor assembly See Torque Specification table for proper torque Lubricate the sleeve key 14 Carefully insert the trim system into the sleeve guide key 61 Align sleeve utilizing the socket hex cap screw key 74 as a guide Screw smart screws key 68 to affix the sleeve system See Torque Specification table for proper torque Place O ring key 69 on the cap key 70 Carefully place the cap on the upper actuator casing key 11 Lubricate cap screws key 77 and attach cap key 70 to the upper casing using cap screws key 77 See Torque Specification table for proper torque Note Rotate the cap such that the outer holes for sensing lines are in line with upper casing holes for sensing lines to validate the alignment and before attaching cap check that travel indicator is aligned on the cap and on the upper casing Mount O ring key 75 on the cap Types EZH and EZHSO Intermediate Flange O ring
54. s key 33 and tighten See Torque Specification table for proper torque 9 Carefully lift the upper actuator casing and lower actuator casing assembly keys 11 and 5 and place on the body key 1 Secure the screws key 24 See Torque Specification table for proper torque Type EZHSO Disk Maintenance 1 Remove screws key 24 2 Carefully lift the upper actuator casing and lower actuator casing assembly keys 11 and 5 off the body key 1 3 Remove the hex socket cap screw key 154 Lift off the disk holder assembly key 30 4 Remove the O ring key 29 Inspect the O ring for damage or wear and replace if necessary Lightly lubricate O ring before placing in the sleeve adaptor key 27 5 Remove the cage key 3 seat ring key 2 and O ring key 34 Inspect the O ring for damage or wear and replace if necessary Lightly lubricate O ring before placing in the body key 1 Do not attempt to remove the sleeve adaptor 6 Setthe seat ring key 2 back in the body key 1 with the curved side down and the seat edge up To check O ring key 7 skip to the Intermediate Flange O ring Maintenance section Place the cage key 3 on top of seat ring The cage will engage the step on the seat ring 7 Place the disk holder assembly key 30 on the sleeve adaptor key 27 8 Insert the hex socket cap screw key 154 and tighten See Torque Specification table for proper torque 9 Carefully lift the upper actuator cas
55. stems 180 apart and away from flanges Place the washers and hex nuts keys 22 and 23 and brackets on the long cap screws and evenly tighten Install remaining small cap screws key 21 washers and hex nuts Replace the two threaded stems by two bolts Keys 21 22 and 23 See Torque Specification table for proper torque Place the travel indicator assembly keys 138 139 140 141 142 143 144 145 and 192 in the upper actuator casing key 11 by hitting the tip of the stem key 139 to clip the fitting key 144 into the plate key 18 and tighten the travel indicator fitting key 141 19 Types EZH and EZHSO Type EZHSO Actuator Maintenance 1 10 11 20 Make a mark on the upper actuator casing key 11 lower actuator casing key 5 intermediate flange key 25 and body key 1 to indicate proper alignment Remove travel indicator assembly keys 138 139 140 141 142 143 144 145 and 192 if present by loosening the travel indicator fitting key 141 and lifting out the travel indicator assembly Remove protective cap key 146 Loosen and remove hex nuts key 151 Remove cap screws key 21 washers key 22 and hex nuts key 23 Remove protective cap key 146 and remove hex nuts key 151 Carefully lift the upper actuator casing key 11 off the lower actuator casing key 5 Remove the socket head cap screws key 16 Lift off the diaphragm key 20 and the inlet plate key 18 R
56. the remark that a check valve Figure 26 must be installed between outlet pressure and loading pressure impulse lines of the regulator and working monitor as well INSTALLATION Personal injury or equipment damage due to bursting of pressure containing parts may result if this regulator is overpressured or is installed where service conditions could exceed the limits given in the characteristics section and on the appropriate nameplate or where conditions exceed any rating of the adjacent piping or piping connections To avoid such injury or damage provide pressure relieving or pressure limiting devices to prevent service conditions from exceeding those limits Also be sure that installation is in compliance with all applicable code and regulations Physical damage to the regulator can break the pilot off the main valve causing personal injury and property damage due to bursting of pressure containing parts To avoid such injury and damage install the regulator in a safe location Only personnel qualified through training and experience should install operate and maintain a regulator Before installation make sure that there is no damage to or debris in the regulator Make sure that all tubing and piping are clean and unobstructed The regulator must be installed on horizontal pipeline For the version with slam shut the release relay must be situated towards the bottom Installation according to EN 12186 is r
57. tment of the pilot adjusting screw may be necessary The damper screw can be turned in clockwise to slow the response of the regulator It is advisable that adjustment of the damper and restrictor screws be limited to 1 4 turn at a time to observe the response of the regulator s SHUTDOWN If the pilot bleed control line pressure is shut down first the downstream system may be subjected to full inlet pressure Pu 1 If the pilot setting must be disturbed be sure to keep some tension on the spring This will prevent trapping inlet pressure during blow down 2 Slowly close the valves in the following order Inlet block valve Outlet block valve Control line valve s if used 3 Open the vent valves to depressurize the system Types EZH and EZHSO MAINTENANCE For both Types EZH and EZHSO DN 100 never remove or disconnect the check valve installed between the two casings The regulator parts are subject to normal wear and must be inspected periodically and replaced as necessary The frequency of inspection and replacement depends on the severity of service conditions and on applicable codes and regulations Use silicone grease for O rings and diaphragm molybdenum graphite grease for spring and mechanical parts To avoid personal injury or property damage from sudden release of pressure isolate the regulator from the pressure system and release all pressure from the pilot and main valve before performi
58. utlet pressure Pd L MOTORIZATION PORT R PILOT Atmospheric pressure Pb A SENSING PORT M INLET Figure 12 Type EZHSO DN 100 Spring to Open Version Operational Schematic MONITORING SYSTEMS Monitoring regulation is overpressure protection by containment therefore there is no relief valve to vent to the atmosphere When the working regulator fails to control the pressure a monitor regulator installed in series which has been sensing the downstream and control pressure goes into operation to maintain the downstream pressure at a slightly higher level than normal pressure During an overpressure situation the monitoring system keeps the customer on line Also testing is relatively easy and safe To perform a periodic test on a monitoring regulator increase the outlet set pressure of the working regulator and watch the outlet pressure to determine if the monitoring regulator takes over at the appropriate outlet pressure Wide Open Monitoring Systems In normal operation of a wide open configuration the working regulator controls the system s outlet pressure With a higher outlet pressure setting the monitor regulator senses a pressure lower than its setpoint and tries to increase outlet pressure by going wide open If the working regulator fails the monitoring regulator assumes control and holds the outlet pressure at its outlet pressure setting Figure 13 shows an upstream wide open monitor Type EZH
59. ve guide key 61 Lubricate the diaphragm key 20 on the upper casing contact area Lubricate and mount the O ring key 69 on the cap key 70 Lubricate and mount O rings key 9 and anti friction rings key 8 inside the cap key 70 Carefully place the cap on the actuator upper casing key 11 Align the travel indicator hole on the cap key 70 to the upper casing travel indicator hole Screw 8 screws key 77 to tighten cap key 70 to the upper casing key 5 Carefully place the top actuator casing on the top of the lower actuator casing trim system using a stud to guide Note Rotate the upper casing such that the outer holes for sensing lines are perpendicular to gas flow Lubricate threads on bolts key 21 Bolt together the upper and lower actuator casings using bolts key 21 washers key 22 and nuts key 23 See Torque Specification table for proper torque Tighten screws key 16 using a star criss cross pattern for five times until proper specified torque is achieved Assemble one nut key 151 to the stem key 147 until achieve specified torque and then assemble another nut key 151 to lock position of stem Screw on the closing cap key 146 Mount O ring key 75 on the cap key 70 If present set the stem key 139 through the casing hole and tap it into the groove in the diaphragm plate key 18 Slide the travel indicator fitting key 141 over the stem and tighten to the cap key 70
60. ystem Screw the smart screws key 68 already on the sleeve to fix the diaphragm plates system on the sleeve system See Torque Specification table for proper torque Lubricate lower casing key 5 on the diaphragm contact area Carefully insert the trim system into the sleeve guide already assembled on the body utilizing the eye bolt key 35 that fits in the ring nut key 73 threaded hole Lubricate the diaphragm key 20 on the upper casing contact area Carefully place the top actuator casing on the top of the lower actuator casing trim system using a stud to guide Note Rotate the upper casing such that the outer holes for sensing lines are perpendicular to gas flow Lubricate threads on bolts key 21 Bolt together the upper and lower actuator casings using bolts key 21 washers key 22 and nuts key 23 See Torque Specification table for proper torque Lubricate and mount the O ring key 69 on the cap key 70 Lubricate and mount O rings key 9 and anti friction rings key 8 inside the cap key 70 Carefully place the cap on the upper casing key 11 Lubricate cap screws key 77 and attach cap key 70 to the upper casing using cap screws key 77 See Torque Specification table for proper torque Mount O ring key 75 on the cap key 70 Screw the eye bolts key 35 on the cap key 70 Place travel indicator assembly keys 138 139 140 141 142 143 144 145 and 192 in the upp
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