Emerson 627W Instruction Manual
Contents
1. Ductile iron Steel or Stainless steel prevent damage to internal parts Maximum pressure to spring and diaphragm casings to prevent Ductile iron 32 1 burst of casings during abnormal operation leak to atmosphere and internal parts damage may occur Steel or Stainless steel 103 1500 103 Maximum diaphragm casing overpressure above setpoint to All materials 41 120 8 3 1 If the spring case is pressurized a metal adjusting screw is required Contact your local Sales Office for details ADJUSTING SCREENED d SCREW CAP VENT ASSEMBLY ADJUSTING SCREW SPRING CASE CONTROL SPRING INTERNAL REGISTRATION DISK ASSEMBLY PUSHER POST W6306 1 DETAIL OF TYPE 627W WITH INTERNAL DOWNSTREAM PRESSURE REGISTRATION ADJUSTING SCREW CAP ADJUSTING SCREW SCREENED VENT ASSEMBLY SPRING CASE CONTROL SPRING DIAPHRAGM HEAD INTERNAL REGISTRATION DISK ASSEMBLY DIAPHRAGM LIMITER O RING DIAPHRAGM 8 LIMITER DIAPHRAGM PUSHER POST W6305 1 DETAIL OF TYPE 627WH WITH INTERNAL DOWNSTREAM PRESSURE REGISTRATION Types 627W and 627WH 1 4 NPT CONTROL LINE CONNECTION W6483 2 DETAIL OF TYPE 627W WITH EXTERNAL DOWNSTREAM PRESSURE REGISTRATION 1 4 NPT CONTROL LINE CONNECTION W5482 1 DETAIL OF TYPE 627WH WITH EXTERNAL DOWNSTREAM PRESSURE REGISTRATION AND CONNECTION FOR OUTLET PRESSURE GAUGE Figure 22. lower casing O ring and stem assembly All pressure must be released from the diaphragm casing before the following steps can be performed While using the following procedures refer to Figures 5 and 6 for key number location Replacing the Valve Plug Assembly or Orifice 1 To inspect and replace the valve plug assembly key 9 or orifice key 2 remove the cap screws key 3 not shown and separate the lower diaphragm casing key 5 from the body key 1 2 Inspect and if necessary remove the orifice key 2 If removed coat the threads of the replacement orifice with lubricant key 38 and tighten to 25 foot pounds 34 Nem 3 Inspect the valve plug assembly key 9 and if necessary remove the hair pin clip key 13 that holds the valve plug assembly in place If replacing the valve plug assembly is the only maintenance required skip to step 10 Replacing the Stem Assembly If itis necessary to perform maintenance on the stem assembly continue with steps 4 through 13 4 Remove the stem guide key 8 from the lower diaphragm casing key 5 Unhook from the lever key 15 and remove the stem key 10 from the lower diaphragm casing key 5 Types 627W and 627WH 10 11 12 13 Remove and inspect the stem O ring key 11 and replace if necessary Also inspect and if necessary replace the O ring key 44 and backup springs Remove and inspect the stem backup rings key 12 and replace if
3. 0 262 6 66 240 to 500 16 5 to 34 5 Red 10B3079X012 3 07 78 0 0 313 7 95 Table 4 Elastomer Temperature Ranges TEMPERATURE RANGE MATERIAL DISK DIAPHRAGM m USAGE oF Disk Nitrile NBR 40 to 180 40 to 82 General Diaphragm Disk Fluorocarbon FKM 0 to 300 18 to 149 Nat boue ferio Diaphragm ater Service Disk Ethylenepropylene EPDM 40 to 275 40 to 135 je e UM n Ier Diaphragm ydrocarbon Service Perfluoroelastomer FFKM Disk 0 to 400 18 to 204 Corrosive Nylon PA Disk 40 to 200 40 to 93 General Polytetrafluoroethylene PTFE Diaphragm Protector 40 to 400 40 to 204 Corrosive 1 Stainless steel body is rated to 40 F 40 C Steel and ductile iron bodies are rated to 20 F 29 C Table 5 Flow and Sizing Coefficients ORIFICE SIZE INCHES mm BODY SIZES Wide Open C for Relief Sizing Ka IEC Sizing Coefficients NPS DN X F F 1 4 6 4 1 2 13 1 4 6 4 1 2 13 1 4 6 4 1 2 13 1 4 6 4 1 2 13 1 4 6 4 1 2 13 3 4 1 63 4 87 0 592 0 962 1 25 1 70 5 29 0 76 0 74 0 543 0 815 0 50 0 50 0 87 0 86 2 50 1 66 5 01 0 620 1 01 Startup Adjustment To avoid personal injury or property damage during startup release downstream pressure to prevent an overpressure condition on the diaphragm of the regulator In order to avoid an overpressure condition and possible equipment damage pressure gauges should always be used to monitor pressure during startup The range of allowable pressure settings is marked on th
4. 19 Pusher Post Assembly Stainless steel 10B3098X032 Recommended spare part Types 627W 627WH 35 34 32 29 SE ABR S VA ZA ae IN 12127777771 IN PIA A f gt ay zu S ZEUS 3 NRS Q RIKKI _ 12269 AT NM APPLY LUBRICANT PARTS NOT SHOWN 3 Figure 5 Type 627W Regulator Assembly Key Description Part Number Key Description 23 Diaphragm 23 Diaphragm continued Type 627W with Ductile iron spring case and Type 627WH use with WCC steel diaphragm casing or CF8M Stainless steel spring case and Nitrile NBR 10B3069X012 diaphragm casing Fluorocarbon FKM 10B3069X032 Nitrile NBR Ethylenepropylene EPDM 10B3069X042 Fluorocarbon FKM 2 required Type 627W with WCC steel Ethylenepropylene EPDM 2 required EET steel spring case and 24 Diaphragm Head i in Hi Type 627W Zinc plated steel Nitrile NBR 12B0178X012 Type 627WH Stainless steel Fluorocarbon FKM 12B0178X022 Ethylenepropylene EPDM 12B0178X042 Recommended spare part 10 Part Number 12B0178X012 12B0178X022 12B0178X042 14B5728X012 12B0175X012 Types 627W and 627WH 35 34 32 29 52 SS SSS SSS SSS ye CORSE Sz v i PLLZLLLLL PRO LS Ne H saa JA n amp OB 9 T IRN rk 4 SINN SS Mu E 12000 eere 3789
5. Operating Inlet and Outlet Pressure Ranges See Table 2 for pressures by orifice and spring range Outlet Pressure Ranges Type 627W 10 to 150 psig 0 69 to 10 3 bar Type 627WH 140 to 500 psig 9 7 to 34 5 bar See Table 2 for pressures by orifice and spring range Orifice Sizes Standard 1 4 or 1 2 inch 6 4 or 13 mm Optional 3 32 1 8 3 16 or 3 8 inch 2 4 3 2 4 8 or 9 5 mm See Table 8 Temperature Capabilities See Table 4 Pressure Registration Standard Internal Optional External through 1 4 NPT control line connection in the diaphragm case Spring Case Vent Connection 3 4 NPT with removable screened vent assembly Elastomer Temperature Ranges See Table 4 Control Line Connection 1 4 NPT downstream control line connection Wide Open C and IEC Sizing Coefficients See Table 5 Approximate Weight 10 pounds 5 kg Option Outlet Pressure Gauge Brass 0 to 30 psi 0 to 2 1 bar 0 to 60 psi 0 to 4 1 bar 0 to 160 psi 0 to 11 0 bar 0 to 300 psi 0 to 20 7 bar 0 to 600 psi 0 to 41 4 bar 1 The pressure temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded Table 1 Maximum Spring and Diaphragm Casing Pressure TYPE 627W TYPE 627WH MAXIMUM PRESSURE DESCRIPTION Maximum pressure to spring and diaphragm casings to prevent leak to atmosphere internal parts damage may occur DIAPHRAGM CASING MATERIAL Psig bar
6. exceed the limits given in Tables 1 2 and 4 or where conditions exceed any ratings 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 Additionally the control line could be broken off the regulator by physical damage causing personal injury and property damage due to escaping liquid To avoid such injury and damage install the regulators and control line where they are protected from physical damage Liquid pressure control systems should be designed using engineering practices to eliminate quick control starting or stopping of the flow stream which can produce water hammer Regulator operation within ratings does not preclude the possibility of damage from debris in the lines or from external sources A regulator should be inspected for damage periodically and after any overpressure condition Key numbers referenced in this section are Types 627W and 627WH WORKING REGULATOR CONTROL LINE MONITOR TYPE 627W SET HIGHER THAN WORKING REGULATOR INLET TYPE 627W TYPE 627W 6623 Figure 4 Monitor Regulator Schematic Table 2 Maximum Inlet Pressure Differential Pressure and Outlet Pressure Ranges OUTLET PRESSURE MAXIMUM INLET PRESSURE PSIG bar MAXIMUM DIFFERENTIAL PRESSURE PSID bar d Type
7. from the control spring key 32 Remove the cap screws key 37 and lift off the spring case key 29 If changing the spring key 32 or repositioning the spring case is the only maintenance required install the replacement spring key 32 or rotate the spring case so it is correct for the application Skip to step 13 For diaphragm area maintenance continue with step 3 Remove the diaphragm limiter key 50 and O ring key 51 on the Type 627WH only Remove the diaphragm assembly by tilting it so that the pusher post assembly key 19 slips off the lever key 15 If itis necessary to replace the lever assembly key 15 remove the lever cap screws key 18 Install the replacement lever key 15 into the lever retainer key 16 by inserting the lever pin key 17 Secure the lever assembly key 15 into the lower diaphragm casing key 5 with the cap screws key 18 and tighten the cap screw to 7 foot pounds 9 N m If itis necessary to perform maintenance on the diaphragm assembly continue with steps 6 through 10 and 6 10 11 12 13 14 step 17 otherwise skip to step 11 Remove cap screw key 46 lower spring seat key 31 for Type 627W only Figure 5 and diaphragm head key 24 On the Type 627WH remove O ring key 52 Figure 6 Separate the diaphragm key 23 from the pusher post key 19 Install the diaphragm key 23 in reverse order of step 6 On the pusher post k
8. 012 Natural Gas Technologies TESCOM Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75069 1872 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Singapore Singapore 128461 Tel 65 6777 8211 Europe Bologna Italy 40013 Tel 39 051 4190611 Gallardon France 28320 Tel 33 0 2 37 33 47 00 For further information visit www emersonprocess com regulators Emerson Process Management Tescom Corporation USA Headquarters EIk River Minnesota 55330 2445 USA Tel 1 763 241 3238 Europe Selmsdorf Germany 23923 Tel 49 0 38823 31 0 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 Inc 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 Managem
9. 3085X012 on the regulator nameplate 9 Valve Plug Assembly Stainless steel Nitrile NBR 1C4248X0202 When ordering replacement parts reference the Stainless steel Nylon PA 1C4248X0062 z Stainless steel Fluorocarbon FKM 1 4248 0052 complete 11 character part number of each needed Stainless steel Ethylenepropylene EPDM 1C4248X0302 part as found in the following parts list Stainless steel Perfluoroelastomer FFKM 1C4248X0392 10 Stem 416 Stainless steel 10B3059X012 I 11 Stem O Ring material same as diaphragm Parts List Nitrile NBR 1D687506992 m Fluorocarbon FKM 1N430406382 Bey Description Ethylenepropylene EPDM 1D6875X0032 1 Body See Table 7 Perfluoroelastomer FFKM with Diaphragm Protector 1D6875X0082 2 Orifice See Table 8 12 Stem Backup Ring 3 Screw 2 required Not shown Polytetrafluoroethylene PTFE 2 required 1K786806992 Ductile iron or steel spring case and diaphragm casing 13 Hair Pin Clip Stainless steel 10B3058X012 plated steel cap screw 14560724052 14 Drive Pin Stainless steel 1H3671X0012 Stainless steel spring case and diaphragm casing SST cap screw 1A5607X0052 15 Lever 304 Stainless steel 20B3063X022 5 Lower Diaphragm Casing 16 Lever Retainer Stainless steel 34B6659X012 Type 627W 17 Lever Pin Stainless steel 10B3083X022 Ductile iron 30B3053X012 18 Screw 18 8 Stainless steel 2 required 1B2905X0012 WCC Steel 30B3104X012 CF8M Stainless steel 30B3104X082
10. 752 APPLY LUBRICANT PARTS NOT SHOWN 3 Figure 6 Type 627WH Regulator Assembly Key Description Part Number Key Description Part Number 29 Spring Case 32 Spring Plated steel Ductile iron Type 627W only 30B3055X012 Type 627W WCC Steel 30B3102X012 10 to 20 psig 0 7 to 1 4 bar Yellow 10B3076X012 CF8M Stainless steel 30B3102X092 15 to 40 psig 1 0 to 2 8 bar Green 10B3077X012 35 to 80 psig 2 4 to 5 5 bar Blue 10B3078X012 30 VentA bl 10B3093X012 70 to 150 psig 4 8 to 10 3 bar Red 10B3079X012 31 Lower Spring Seat Zinc plated steel Type 627WH Type 627W only T1142524152 140 to 250 psig 9 65 to 17 2 bar Blue 10B3078X012 240 to 500 psig 16 5 to 34 5 bar Red 10B3079X012 Recommended spare part Types 627W 62 WH Key Description 33 Upper Spring Seat Zinc plated steel 34 Locknut Zinc plated steel 35 Adjusting Screw Plated steel 36 Adjusting Screw Cap Plastic 37 Screw Plated steel 8 required Type 627W Ductile iron casings WCC Steel casings CF8M Stainless steel casings SST cap screw Type 627WH WCC Steel casings CF8M Stainless steel casings SST cap screw 44 O Ring Material same as diaphragm 2 required Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM Perfluoroelastomer FFKM with Diaphragm protector 45 Backup Ring PTFE 2 required 46 Screw Zinc plated steel Type 627W Type 627WH 50 Diaphragm Limiter Zinc plated steel Type 627WH only
11. Instruction Manual Form 5447 March 2009 Types 627W and 627WH Types 627W and 627WH Direct Operated Pressure Reducing Liquid Regulators Fisher regulators must be installed operated and maintained in accordance with federal state and local codes rules and regulations and manufacturer s instructions Installation operation and maintenance procedures performed by unqualified personnel may result in improper adjustment and unsafe operation Either condition may result in equipment damage or personal injury Use qualified personnel when installing operating and maintaining the Types 627W and 627WH regulators Introduction Scope of the Manual This Instruction Manual provides installation startup adjustment maintenance and parts ordering information for the Types 627W and 627WH pressure reducing regulators for liquid service Only personnel qualified through training or experience should install operate and maintain these regulators If there are any questions concerning these instructions contact your local Sales Office before proceeding Description The Types 627W and 627WH Figure 1 are direct operated pressure reducing regulators for liquid Service On the internal registration version downstream pressure is registered internally through the body to the underside of the diaphragm Types 627W and 627WH direct operated regulators are also available in a downstream control line version for external pressu
12. RANGE SPRING PART ORIFICE SIZE NUMBER AND COLOR INCHES mm Elastomer Disk Nylon Disk Elastomer Disk Nylon Disk PSIG bar 10 to 20 0 69 to 1 4 1 4 6 4 220 15 2 420 29 0 200 13 8 400 27 6 10B3076X012 Yellow 1 2 13 220 15 2 250 17 2 200 13 8 250 17 2 15 to 40 1 0 to 2 8 1 4 6 4 240 16 5 440 30 3 200 13 8 400 27 6 10B3077X012 Green 1 2 13 240 16 5 300 20 7 200 13 8 300 20 7 627W 35 to 80 2 4 to 5 5 1 4 6 4 280 19 3 480 33 1 200 13 8 400 27 6 10B3078X012 Blue 1 2 13 280 19 3 480 33 1 200 13 8 400 27 6 70 to 150 4 8 to 10 3 1 4 6 4 350 24 1 550 37 9 200 13 8 400 27 6 10B3079X012 Red 1 2 13 350 24 1 550 37 9 200 13 8 400 27 6 140 to 250 9 7 to 17 2 1 4 6 4 450 31 0 650 44 8 200 13 8 400 27 6 10B3078X012 Blue 1 2 13 450 31 0 500 34 5 200 13 8 250 17 2 627WH 240 to 500 16 5 to 34 5 1 4 6 4 700 48 3 900 62 1 200 13 8 400 27 6 10B3079X012 Red 1 2 13 700 48 3 750 51 7 200 13 8 250 17 2 shown in Figures 5 and 6 Ensure that the operating 5 If continuous operation is required during elastomer temperature ranges listed in Table 4 are inspection or maintenance install a three valve not exceeded Like most regulators Types 627W and bypass around the regulator 627WH regulators have outlet pressure ratings that are lower than their inlet pressure ratings ENNE 1 Only personnel qualified through training and The vent line or sta
13. Recommended spare part Industrial Regulators Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75069 1872 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Shanghai China 201206 Tel 86 21 2892 9000 Europe Bologna Italy 40013 Tel 39 051 4190611 Middle East and Africa Dubai United Arab Emirates Tel 971 4811 8100 Part Number Key Description Part Number 1D667125072 51 O Ring 1D667728982 Type 627WH only Nitrile NBR 1K877606992 10B3081X012 Fluorocarbon FKM 1K8776X0062 20B3082X012 Ethylenepropylene EPDM 1K8776X0032 Perfluoroelastomer FFKM with Diaphragm protector 1K8776X0072 14391724052 52 O Ring material same as diaphragm 14368324052 627W 1 required not shown 4A6751X0092 Nitrile NBR 10853806992 Fluorocarbon FKM 1C8538X0052 14346424052 Ethylenepropylene EPDM 1C8538X0072 1 3464X0022 Perfluorelastomer FFKM with Diaphragm protector 1C8538X0072 Type 627WH 2 required 1E204306992 Nitrile NBR 10853806992 h ERE Fluorocarbon FKM 1C8538X0052 Ethylenepropylene EPDM 1C8538X0072 4E2643X0042 Perfluoroelastomer FFKM C8538X0072 67 Drive Screw 2 required Not shown 1A368228982 10B3106X012 68 Diaphragm Protector Not shown Ductile iron casing 14B3636X012 1A381624052 Steel or stainless steel 14B4324X012 1C379124052 72 Pipe Plug for 1 4 NPT Tap Not shown Zinc plated steel 1A767524662 Stainless steel 14767535072 22B0176X
14. Types 627W and 627WH Construction Details Types 627W and 627WH Hi INLET PRESSURE EX OUTLET PRESSURE ATMOSPHERIC PRESSURE M1037 Figure 3 Type 627W Operational Schematic Also Typical of Type 627WH Principle of Operation The Type 627W 627WH refer to Figure 2 is a direct operated regulator On the internal registration version downstream pressure is registered internally through the body to the under side of the diaphragm When the downstream pressure is at or above the Set pressure the disk is held against the seat and there is no flow through the regulator When demand increases downstream pressure drops slightly allowing the spring to extend moving the stem down and the disk away from the seat This allows flow through the body to the downstream system Types 627W and 627WH direct operated regulators are also available in a downstream control line version This version has a stem seal between the body outlet pressure and diaphragm case Pressure is registered under the diaphragm through the 1 4 NPT downstream control line connection Figure 2 Installation Personal injury equipment damage or leakage due to escaping liquid or bursting of pressure containing parts may result if this regulator is overpressured or installed where service connection could
15. WCC Steel f 41B8978X012 41B8080X012 CF8M Stainless Steel f 41B8978X072 41B8080X072 CL600 RF WCC Steel f 40B6754X012 40B6756X012 CF8M Stainless Steel f 40B6754X102 40B6756X062 PN 16 25 40 Wee Steel f 44B0386X012 44B3342X012 CF8M Stainless Steel f 44B0386X032 44B3342X032 Table 8 Orifice Key 2 ORIFICE DIAMETER PART NUMBER Inches mm 303 Stainless Steel 316 Stainless Steel 3 32 24 0R044135032 0R0441X0012 1 8 3 2 14936735032 1A9367X0022 3 16 4 8 00991235032 009912X0012 1 4 6 4 0B042035032 0B0420X0012 3 8 9 5 0B042235032 0B0422X0012 1 2 13 1 928835032 1 9288 0012 15 Using a crisscross pattern tighten the cap screw Key Description Part Number key 37 to 7 foot pounds 9 Nem 5 Lower Diaphragm Casing continued Type 627W with control line or 1 4 NPT Tap 16 If necessary refer to the installation and or the Ductile iron 39A5987X012 startup and adjustment procedures WCC Steel 30B8734X012 CF8M Stainless steel 30B8734X032 17 Install the adjusting screw cap key 36 after 627 Wel lator adjust t WCC Steel 30B3104X012 regulator adjustment CF8M Stainless steel 30B3104X082 Type 627WH with control line or 1 4 NPT Tap WCC Steel 30B8734X012 Parts Orderi ng CF8M Stainless steel 30B8734X032 Stem Guide 316 Stainless steel When corresponding with your local Sales Office about Standard 14B7259X012 this equipment always reference the information found With control line 10B
16. ck opening must be experience should install operate or maintain protected against condensation this regulator or clogging 2 For a regulator that is shipped separately make sure that there is no damage to or foreign material in the regulator 6 Position the body key 1 and or diaphragm spring case key 29 so it will not collect moisture or debris in the screened vent If the regulator 3 Ensure that all tubing and piping have been blown requires repositioning refer to the Body Area free of foreign debris Maintenance Procedures and or the diaphragm case area maintenance procedures in the 4 The regulator may be installed in any position as Maintenance section to reposition the screened long as the flow through the body is in the vent for the application direction indicated by the arrow cast on the body Types 627W 627WH Table 3 Outlet Pressure Ranges SPRING RANGE SPRING FREE LENGTH SPRING WIRE DIAMETER TYPE Psig m COLOR SPRING PART NUMBER INCHES mm INCHES mm 10 to 20 0 69 to 1 4 Yellow 10B3076X012 3 19 81 0 0 170 4 32 15 to 40 1 0 to 2 8 Green 10B3077X012 3 19 81 0 0 207 5 26 627W 35 to 80 2 4 to 5 5 Blue 10B3078X012 3 20 81 3 0 262 6 66 70 to 150 4 8 to 10 3 Red 10B3079X012 3 07 78 0 0 313 7 95 140 to 250 9 7 to 17 2 Blue 10B3078X012 3 20 81 3
17. e nameplate If a pressure setting beyond this range is necessary substitute the appropriate regulator control spring Change the nameplate to indicate the new pressure range Before increasing the setting refer to Tables 1 and 2 Review the pressure limits for the control spring range being used and be certain that the new pressure setting will not result in an overpressure condition Note PAN the adjustment procedures Slowly open the upstream shutoff valve Slowly open the downstream shutoff valve Check all connections for leaks Make final control spring adjustments according to Always use a pressure gauge to monitor pressure when making adjustments Types 627W 627WH Table 6 Maximum Torque Values KEY NUMBER DESCRIPTION FOOT POUNDS NEWTON METERS 2 Orifice 25 34 3 Cap Screw with ductile iron or steel diaphragm casing 25 34 18 Lever Cap Screw 7 9 Spring Case Cap Screw with ductile iron diaphragm casing 7 9 Spring Case Cap Screw with steel diaphragm casing 35 47 Diaphragm Cap Screw Type 627W 7 9 Diaphragm Cap Screw Type 627WH 14 19 1 Refer to Figures 5 and 6 for key numbers Refer to Figures 5 and 6 for key number location 1 Remove the adjusting screw cap key 36 2 Loosen the locknut key 34 3 Increase the outlet pressure setting by turning the adjusting screw key 35 clockwise Decrease the outlet pressure settings by turning the adjus
18. ent product remains solely with the purchaser Emerson Process Management Regulator Technologies Inc 1998 2009 All Rights Reserved
19. ey 19 insert and finger tighten the cap screw key 46 Hook the pusher post key 19 on the lever key 15 then turn the diaphragm key 23 to match the holes in the diaphragm with the holes in the lower diaphragm casing key 5 Unhook the pusher post key 19 from the lever key 15 and tighten the cap screw key 46 to 7 foot pounds 9 N m Hook the pusher post key 19 on the lever key 15 and check the hole alignment If necessary loosen the cap screw key 46 and reposition the diaphragm key 23 on the pusher post key 19 Tighten the cap screw to 7 foot pounds 9 N m Insert the diaphragm assembly into the lower diaphragm casing key 5 Install the spring key 32 and upper spring seat key 33 and apply lubricant to the upper spring seat Install the spring case key 29 so that the vent key 30 is in the correct position for the application Insert the cap screws key 37 and finger tighten Screw in the adjustment screw key 35 to put slack into the diaphragm key 23 Table 7 Body Key 1 Types 627W and 627WH END CONNECTION STYLE BODY MATERIAL NPS 3 4 NPS 1 DN 25 NPS 2 DN 50 Ductile Iron Type 627W only 30B3046X012 30B3048X012 30B3096X012 NPT WCC Steel 30B3050X012 30B3051X012 30B7452X012 CF8M Stainless Steel 30B3050X062 30B3051X092 30B7452X052 CM50 RF WCC Steel f 43B8656X022 44B0666X012 CF8M Stainless Steel f 43B8656X052 44B0666X022 CL300 RF
20. necessary Apply lubricant to the stem O ring key 11 For assembly insert the stem key 10 into the lower diaphragm casing key 5 and hook it on the lever key 15 Insert parts into the lower diaphragm casing key 5 that were removed in steps 4 through 6 Install the valve plug assembly key 9 line up the hole in the valve plug assembly and stem key 10 and insert the hair pin clip key 13 Position the diaphragm casing plus attached parts in relation to the body key 1 so that they are correct for the application Secure the lower diaphragm casing to the body with the cap screw key 3 For ductile iron or steel diaphragm casings tighten the cap screws key 3 to 25 foot pounds 34 Nem It may be necessary to reposition the diaphragm spring case to prevent rain ice and foreign debris from entering the spring case Refer to the Diaphragm and Spring Case Area Maintenance Procedures Diaphragm and Spring Case Area Maintenance Procedures These procedures are for gaining access to the control spri spri ng diaphragm assembly and lever assembly All ng pressure must be released from the diaphragm casing before these steps can be performed While using the following procedures refer to Figures 5 and 6 for key number locations 1 Remove the adjusting screw cap key 36 loosen the lock nut key 34 and turn the adjusting screw key 35 counterclockwise until all compression is removed
21. re registration The control line version has a blocked throat with an O ring stem www emersonprocess com regulators WA4793 Figure 1 Types 627W and 627WH Pressure Reducing Liquid Regulator seal and a 1 4 NPT control line connection in the diaphragm case The stem seal separates the body outlet pressure from the diaphragm case Specifications Refer to Specifications lists for Types 627W and 627WH constructions on page 2 Specifications for a given regulator as it originally comes from the factory are stamped on the spring case nameplate 4 5 EMERSON Process Management D102504X012 Types 627W 627WH Specifications Available Construction Type 627W Direct operated pressure reducing liquid regulator Figure 2 Type 627WH Type 627W with a diaphragm limiter to deliver a higher outlet pressure Figure 2 Control Line Option Type 627W or 627WH with a stem seal between the body outlet pressure and diaphragm case Pressure is measured under the diaphragm through the 1 4 NPT downstream control line connection Figure 2 Body Sizes and End Connection Styles NPT NPS 3 4 1 or2 CL150 CL300 CL600 RF Flanged NPS 1 or 2 DN 25 or 50 PN 16 25 40 NPS 1 or 2 DN 25 or 50 Maximum Spring and Diaphragm Casing Pressure See Table 1 Body Pressure Shell Rating NPT Steel 2000 psig 138 bar NPT Ductile Iron 1000 psig 68 9 bar CL600 RF Flanged Steel 1500 psig 103 bar Maximum
22. ting screw counterclockwise Shutdown To avoid personal injury or property damage or damage to regulator or downstream components during shutdown release downstream pressure to prevent an overpressure condition on the diaphragm of the regulator 1 Close the nearest upstream shutoff valve 2 Close the nearest downstream shutoff valve 3 Open the vent between the regulator and the downstream shutoff valve nearest to it Maintenance Unless otherwise specified the following maintenance procedures apply to all Types 627W and 627WH regulators For a summary of maximum torque values refer to Table 6 Due to normal wear damage from external sources or debris in the line regulator parts such as the valve plug assembly orifice and diaphragm must be inspected periodically and replaced as necessary to ensure correct performance The frequency of inspection and replacement depends upon the severity of conditions and the requirements of state and federal laws and regulations Normal wear of the orifice and disk assembly is accelerated with high pressure drops and with large amounts of impurities in the flow stream Instructions are given below for replacing the valve plug assembly orifice diaphragm and O rings These procedures may also be used for disassembly required for inspection and replacement of other parts Body Area Maintenance Procedures These procedures are for gaining access to the valve plug assembly orifice
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