Emerson 98 Series Relief Valve or Backpressure Regulator Instruction Manual
Contents
1. continued Tapped NPS 1 4 body 2L442919012 NPS 1 2 DN 15 body 2 24 NPS 3 4 and 1 DN 20 and 25 bodies 3L460819012 NPS 1 1 2 and 2 DN 40 and 50 bodies 4P784019012 Steel Standard NPS 1 4 body 2J127522012 NPS 1 2 DN 15 body 2L416322012 NPS 3 4 and 1 DN 20 and 25 bodies 3E408722012 NPS 1 1 2 2 DN 40 and 50bodies Tapped NPS 1 4 body 2L443022012 NPS 1 2 DN 15 body 2L442022012 NPS 3 4 and 1 DN 20 and 25 bodies 3L460722012 NPS 1 1 2 and 2 DN 40 and 50 bodies 3P790422012 316 Stainless steel Standard NPS 1 4 body 2J1275X0012 NPS 1 2 DN 15 body 2L416333092 NPS 3 4 and 1 DN 20 and 25 bodies 3E4087X0012 NPS 1 1 2 2 DN 40 and 50bodies Tapped NPS 1 4 body 2L4430X0012 NPS 1 2 DN 15 body 2L4420X0012 NPS 3 4 and 1 DN 20 and 25 bodies 3L4607X0022 NPS 1 1 2 and 2 DN 40 and 50 bodies 3P7904X0012 Type 98L Cast iron Standard NPS 1 4 body 2E391319012 NPS 1 2 DN 15 body 39496319012 NPS 3 4 and 1 DN 20 and 25 bodies 4E397919012 Tapped NPS 1 4 body 2 2 NPS 1 2 DN 15 body 3L442119012 NPS 3 4 and 1 DN 20 and 25 bodies 4L461019012 Steel Standard NPS 1 4 body 2J127922012 NPS 1 2 DN 15 body 3L416122012 NPS 3 4 and 1 DN 20 and 25 bodies 4E592922012 Tapped NPS 1 4 body NPS 1 2 DN 15 body 3L442222012 NPS 3 4 and 1 DN 20 and 25 bodies 4L460922012 316 Stainless steel Standard NPS 1 4 body 2J1279X0022 NPS 1 2 DN 15 body 3L4161X00222. 15 body NPS 3 4 and 1 DN 20 and 25 bodies NPS 1 1 2 to 2 DN 40 and 50 bodies Type 98HM NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies 21 O ring Retainer Elastomer seat only NPS 1 4 body 416 Stainless steel 316 Stainless steel NACE NPS 1 2 DN 15 body 416 Stainless steel 316 Stainless steel NACE NPS 3 4 and 1 DN 20 and 25 bodies 416 Stainless steel 316 Stainless steel NACE NPS 1 1 2 and 2 DN 40 and 50 bodies 416 Stainless steel 316 Stainless steel NACE 22 O ring Types 98L and 98H Elastomer seat only NPS 1 4 body Nitrile NBR Fluorocarbon FKM NPS 1 2 DN 15 body Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM NPS 3 4 and 1 DN 20 and 25 bodies Nitrile NBR Fluorocarbon FKM 22 O ring Type 98HM Elastomer Seat Only NPS 1 2 DN 15 body Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM Perfluoroelastomer FFKM Type 98HM Elastomer Seat Only NPS 3 4 and 1 DN 20 and 25 bodies Nitrile NBR Fluorocarbon FKM Ethylenepropylene EPDM Perfluoroelastomer FFKM Recommended spare part Part Number 14368228982 1E393104022 1E396104022 1E399304022 1P787904022 1E394004022 1E397004022 1E390404022 1E396104022 1E399304022 1P787904022 1E3961X0012 1E3993X0012 11A5132X012 11A5133X012 11 5134 012 11 5135 012 11A5136X012 11A5137X012 11A5527X012 11A5136X012 11A5137X012 1L346035132 1L346035072 1L341535232 1L341535072 1L343035132 1
3. NPS 3 4 and 1 DN 20 and 25 bodies 4E592933092 Tapped NPS 1 4 body 2L4428X0012 NPS 1 2 DN 15 body 3L4422X0012 NPS 3 4 and 1 DN 20 and 25 bodies 4L4609X0032 Type 98HM Steel NPS 1 2 DN 15 body 2L442022012 NPS 3 4 and 1 DN 20 and 25 bodies 3L460722012 NPS 1 1 2 and 2 DN 40 and 50 bodies 3P790422012 Stainless Steel NPS 1 2 DN 15 body 2L4420X0012 NPS 3 4 and 1 DN 20 and 25 bodies 3L4607X0022 NPS 1 1 2 and 2 DN 40 and 50 bodies 3P7904X0012 Types 98L and 98H METAL DIAPHRAGMS 7 KEY 12 5 9 SPRING KEY 11 DIAPHRAGM GASKET KEY 19 m S l X SN TYPE 98L EXCEPT FOR NPS 1 4 2 TO 7 psi 0 14 TO 0 48 bar RANGE WITH TWO METAL DIAPHRAGMS SPRING METAL KEY 11 DIAPHRAGM KEY 12 NON XX a IN DIAPHRAGM GASKET KEY 19 DO OOl SV NS 2 d CLE TA x NA B TYPE 98L NPS 1 4 2 TO 7 psi 0 14 TO 0 48 bar RANGE WITH ONE METAL DIAPHRAGM NA Sum CER eio emo aa we 4 30A7027 TYPE 98L ASSEMBLY WITH METAL DIAPHRAGM APPLY LUBRICANT L ANTI SEIZE COMPOUND 1 Lubricants must be selected such that they meet the temperature requirements 21 98L ASSEMBLY WITH ELASTOMER DIAPHRAGM APPLY LUBRICANT OR SEALANT L ANTI SEIZE COMPOUND S MULTI PURPOSE PTFE THREAD SEA
4. to 0 psig 0 bar However highest capacities and best performances are obtained by using these springs in their recommended ranges Table 2 Type 98HM Relief Set Pressure Ranges SPRING BODY SIZES SPRING RANGE SPRING SPRING PART SPRING WIRE DIAMETER SPRING FREE LENGTH MATERIAL NPS DN psig bar COLOR NUMBER Inch mm Inch mm 15 to 35 1 0 to 2 4 Yellow 1E395627022 0 207 5 26 2 50 63 5 A i 25 to 75 1 7 105 2 Green 10745570012 0 234 5 94 2 62 66 5 70 to 140 4 8 to 9 6 Red 1E395727192 0 281 7 14 2 44 62 0 130 to 200 9 0 to 13 8 Blue 11380027142 0 331 8 41 2 25 57 2 15 to 35 1 0 to 2 4 Yellow 1E398927022 0 306 777 4 00 102 25 to 75 1 7 05 2 Green 1E399027142 0 343 8 71 4 00 102 Sandi E20 and 25 70 to 140 4 8 to 9 6 Red 1E399127162 0 406 0 3 4 00 102 130 to 200 9 0 to 13 8 Blue 11380127082 0 468 1 9 3 75 95 3 5 to 35 0 34 to 24 Dark Gray 1E792327092 0 469 11 9 6 50 165 ab 20 to 65 14 to 4 5 Light Blue 1E795327082 0 531 3 5 6 50 165 50 to 100 3 510 6 9 Light Gray 1E795427082 0 563 43 6 50 165 80 to 170 5 5 to 11 7 Black 1P788827082 0 656 6 7 6 50 165 gt 15 to 100 1 0 to 6 9 Unpainted 14B9943X012 0 282 7 16 2 50 63 5 Stainless 100 to 275 6 9 to 19 0 Unpainted 14B9942X022 0 375 9 53 2 50 63 5 steel 15 to 100 1 0 to 6 9 Unpainted 14B9944X022 0 432 11 0 4 03 102 9H 20Na 100 to 275 6 9 to 19 0 Unpainted 14B9945X022 0 562 4 2 4 03 102 1 All springs may be backed off
5. to 0 psig 0 bar However highest capacities and best performances are obtained by using these springs in their recommended ranges Table 3 Torque Specifications BODY SIZES SPRING CASE ORIFICE NPS 1 4 1 2 3 4 1 1 1 2 2 DN 15 20 25 40 50 4 5 to 5 0 10 to 13 24 to 30 40 to 50 FOOT POUNDS Nem 6 1 to 6 8 14 to 18 33 to 41 54 to 68 FOOT POUNDS 8 to 12 29 to 35 33 to 42 140 to 170 Nem 11 to 16 39 to 47 45 to 57 190 to 230 Unbox and inspect the valve Remove pipe scale and other foreign material from the connecting pipeline Apply a suitable pipe compound to the external threads The relief valve can be installed in any position as long as the flow is in the direction indicated by the arrow cast on the body Overpressure Protection Overpressuring any portion of this equipment may result in equipment damage leaks in the relief valve backpressure regulator or personal injury due to bursting of pressure containing parts The system should be inspected after any overpressure condition Relief or backpressure ranges are from 2 to 200 psig 0 14 to 13 8 bar The individual spring range of your relief valve is stamped on the nameplate Maximum inlet pressures depend upon body materials and temperatures See the Specifications section for the maximum inlet pressure of the valve The valve should be inspected for damage after any overpres
6. 0 and 25 bodies NPS 1 1 2 and 2 DN 40 and 50 bodies 316 Stainless steel NPS 1 4 body NACE NPS 1 2 DN 15 body NACE NPS 3 4 and 1 DN 20 and 25 bodies NACE NPS 1 1 2 and 2 DN 40 and 50 bodies NACE Type 98HM NPS 1 2 DN 15 body Metal Seat and Metal Diaphragm 416 Stainless steel 316 Stainless steel Elastomer Seat and Metal Diaphragm 416 Stainless steel 316 Stainless steel Elastomer Seat and Elastomer Diaphragm 416 Stainless steel 316 Stainless steel NPS 3 4 and 1 DN 20 and 25 bodies 416 Stainless steel 316 Stainless steel NPS 1 1 2 and 2 DN 40 and 50 bodies 416 Stainless steel 316 Stainless steel 6 Pusher Post 7 Washer Elastomer diaphragm only 416 Stainless steel trim NPS 1 4 body NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies 316 Stainless steel trim NPS 1 4 body Standard NPS 1 4 body NACE NPS 1 2 DN 15 body Standard NPS 1 2 DN 15 body NACE NPS 3 4 and 1 DN 20 and 25 bodies Standard NPS 3 4 and 1 DN 20 and 25 bodies NACE 8 Lower Spring Seat NPS 1 4 body Aluminum NPS 1 2 DN 15 body Aluminum NPS 1 2 DN 15 body Plated Steel For Type 98HM only with Stainless steel Spring NPS 3 4 and 1 DN 20 and 25 bodies Aluminum Part Number See following table See following table 1L345835132 1L341635132 1L342935132 1P788535132 1L345835072 1L3416X0102 1L342935072 1P788535072 1L341635132 1L3416X0102 1L341635132 1L3416X0102 1L341635032 1L3416X0102 18B5256X01
7. 132 11343935072 11343835132 11343835072 10343835072 1 1 2 2 40 50 1 788335132 1 788335072 1 788435132 1 788435072 1 788435072 Key 12 Diaphragm BODY SIZES DIAPHRAGM MATERIAL TYPE Neoprene CR with Fluorocarbon FKM Ethylenepropylene 302 Stainless Steel 5 DN Neoprene CR PTFE Protector 2 required EPDM 2 required 1 4 1L345302112 1L345302402 1L345436012 98L 1 2 15 1L341302112 11341302402 11341436012 3 4 1 20 25 1L342302112 11342302402 1342236012 98H 1 4 1L344902112 1K344902112 1L344902402 11345036012 1 2 15 1L341202112 11341202402 1L3412X00320 1L339936012 98H and 98HM 1 20 25 1L343302112 ze 1L3433X0032 1L3433X0062 1L343236012 1 1 2 2 40 50 1P788102192 11 1347 012 1P7881X00220 1P787836012 2 2 required 1 1 required for Type 98H and 2 for Type 98HM 3 Available to NPS 1 2 DN 15 Type 98H and all sizes Type 98HM Please consult your local Sales Office for Ethylenepropylene EPDM option on other sizes 4 Only 1 metal diaphragm is required for Type 98L NPS 1 4 2 to 7 psi 0 14 to 0 48 bar 2 metal diaphragms for other ranges Recommended spare part 15 Types 98L and 98H Key Description 51 NACE Tag not shown 52 Tag Wire not shown NACE 53 O ring for Type 98HM only Nitrile NBR not available with Metal Diaphragms NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies NPS 1 1 2 a
8. 132 1L343135072 1L343135072 1 1 2 2 40 50 2P787046172 2P787035072 1P787135132 1P787135072 1P787135072 Key 4 Types 98L and 98H Valve Plug ELASTOMER SEAT BODY SIZES METAL TO METAL SEAT Standard Applications NACE Applications NPS DN 416 Stainless Steel 316 Stainless Steel 416 Stainless Steel 316 Stainless Steel 1 4 11345246172 10345235072 1345135132 11345135072 1345135072 1 2 15 11344146172 10344135162 10344335132 1344335072 1344335072 3 4 1 20 25 11343746172 10343735162 1343635132 11343635072 11343635072 1 1 2 2 40 50 1 787246172 1 787235072 1 787346172 1 787335072 1 787335072 Key 4 Type 98HM Valve Plug ELASTOMER SEAT AND ELASTOMER SEAT AND BODY SIZE METAL SEAT AND METAL DIAPHRAGM METAL DIAPHRAGM ELASTOMER DIAPHRAGM NPS DN 416 Stainless Steel 316 Stainless Steel 416 Stainless Steel 316 Stainless Steel 416 Stainless steel 316 Stainless Steel 1 2 15 17B3475X012 17B3475X022 17B3474X032 17B3474X012 17B3474X032 17B3474X012 3 4 1 20 25 18B5255X012 18B5255X022 18B5254X012 18B5254X022 18B5254X012 18B5254X022 1 2 2 40 50 18B3528X012 18B3528X022 18B3530X012 18B3530X022 18B3530X012 18B3530X022 Key 6 Pusher Post ELASTOMER SEAT BODY SIZE METAL TO METAL SEAT Standard Applications NACE Applications NPS DN 416 Stainless Steel 316 Stainless Steel 416 Stainless Steel 316 Stainless Steel 1 4 1345735132 11345735072 11345635132 11345635072 10345635072 1 2 15 1344535132 1344535072 11344235132 1344235072 10344235072 3 4 1 20 25 1343935
9. 2 18B5256X022 18B3529X012 18B3529X022 See following table 1L344736012 1L339836012 1L342836012 1L344736142 1L3447X0012 1L339835072 1L339840032 1L342836142 1L3428X0022 1L344609012 1L339708012 17B4480X012 1L342708012 NPS 3 4 and 1 DN 20 and 25 bodies Plated Steel For Type 98HM only with Stainless steel Spring NPS 1 1 2 and 2 DN 40 and 50 bodies Steel plated 9 Upper Spring Seat Steel plated NPS 1 4 body NPS 1 2 DN 15 body NPS 1 2 DN 15 body For Type 98HM only with SST Spring NPS 3 4 and 1 DN 20 and 25 bodies NPS 3 4 and 1 DN 20 and 25 bodies For Type 98HM only with SST Spring NPS 1 1 2 and 2 DN 40 and 50 bodies 10 Gasket Types 95L and 95H Composition NPS 1 4 body NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies NPS 1 1 2 and 2 DN 40 and 50 bodies 2 required for Type 98H only Recommended spare part 12 17B3088X022 1P787724152 1B798525062 1D667125072 14B9951X012 1E398725072 14B9952X012 1P787624092 1L344804022 1L341104022 1L343404022 1P788004022 Key Description 10 Gasket continued Type 98HM Graphite NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies Composition NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies NPS 1 1 2 and 2 DN 40 and 50 11 Relief Valve Spring 12 Diaphragm 13 Nameplate not shown 14 O ring Type 98H only NPS 1 1 2 and 2 DN 40 and 50 bodies Elastomer seat only Nitrile NBR Fluorocarbon FKM Fluoroc
10. 788225012 1P788235072 316 Stainless steel Trim 316 Stainless steel 2 required 1P788235072 Steel 316 Stainless steel 1 of each required 1P788225012 1P788235072 Elastomer Seat with 416 Stainless steel Trim Steel 2 required 1P788225012 316 Stainless steel Trim 316 Stainless steel 2 required 1P788235072 Type 98HM NPS 1 1 2 and 2 DN 40 and 50 bodies 2 required 1P788235072 Locknut Steel plated NPS 1 4 and 1 2 DN 15 bodies 1L872324122 NPS 3 4 and 1 DN 20 and 25 bodies 1L872224122 NPS 1 1 2 and 2 DN 40 and 50 bodies 1P788724122 Tee Handle Assembly not shown Types 98L and 98H only NPS 1 4 1F2236000A2 NPS 3 4 and 1 DN 20 and 25 1F2238000A2 Handwheel not shown Zinc NPS 1 2 DN 15 Types 98L and 98H bodies only 1J496144012 Machine Screw not shown Steel plated NPS 1 2 DN 15 body with handwheel only 16A5763X012 Lockwasher not shown Steel NPS 1 2 DN 15 body with handwheel only 14352332992 O ring shown Types 98L and 98H with sealed adjusting screw only 1E547706992 Sealing Washer not shown Types 98L and 98H NPS 1 2 DN 15 1V205699012 NPS 3 4 and 1 DN 20 and 25 11A9681X012 Type 98HM NPS 1 2 DN 15 1V2056X0022 NPS 3 4 and 1 DN 20 and 25 11A9681X022 13 Types 98L and 98H Key 1 Types 98L and 98H Regulator Body NPT
11. 965 2014 All Rights Reserved 4 es EMERSON
12. A0192X022 10A4986X052 Key 1 Types 98L and 98H Regulator Body Socket Weld BODY SIZE TYPE 98H BODY MATERIAL TYPE 98L BODY MATERIAL NPS DN Steel Stainless Steel Steel Stainless Steel 1 2 15 2L9673X0022 2L9673X0012 2U8059X0012 2U8059X0022 3 4 20 2N443922012 2N4439X0012 2N4463X0012 2N4463X0022 1 25 2N414422012 2N4144X0012 2N445222012 2N4452X0012 1 1 2 40 3V4542X0012 3V4542X0022 2 50 30 0191 012 30 0191 032 Key 1 Types 981 and 98H Regulator Body PN 16 25 40 RF Flanged Bodies BODY SIZE TYPE 98H BODY MATERIAL TYPE 98L BODY MATERIAL NPS DN Steel 316 Stainless Steel Steel 316 Stainless Steel 1 2 15 14B2236X012 14B2236X022 24B1959X012 24B1959X022 3 4 20 14B2236X032 14B2236X042 14B2237X012 14B2237X022 1 25 14B2236X052 14B2236X062 14B2237X032 14B2237X042 1 1 2 40 14B2236X072 14B2236X082 2 50 14B1513X012 14B1513X022 Recommended spare part 14 Types 98L and 98H Key 3 Orifice ELASTOMER SEAT BODY SIZE METAL TO METAL SEAT Standard Applications NACE Applications NPS DN 416 Stainless Steel 316 Stainless Steel 416 Stainless Steel 316 Stainless Steel 1 4 1 91646172 1E391635072 1L345935132 1L345935072 1L345935072 1 2 15 1E395046172 1E395035072 1L341735132 1L341735072 1L341735072 3 4 1 20 25 1E398046172 1E398035072 1L343135
13. BODY SIZE TYPE 98H TYPE 98L NPS DN Cast Iron Steel 316 Stainless Steel Cast Iron Steel 316 Stainless Steel 1 4 11346419012 11372122012 1372133092 11346519012 10372322012 10372333092 1 2 15 21339519012 21368722012 21368733092 21339219012 21368922012 21368933092 3 4 20 21342519012 21373422012 21373433092 21341919012 21318222012 21318233092 1 25 21342619012 21373522012 21373533092 21342019012 21318322012 21318333092 1 1 2 40 3 786819012 3 786822012 3P786833092 2 50 3P786719012 3P786722012 3P786733092 Key 1 Type 98HM Regulator Body BODY SIZE TYPE 98HM 316 Stainless Steel 37B3472X012 37B3472X022 3 4 20 48B5252X012 48B5252X022 1 2h 48B6241X012 48B6241X022 1 1 2 40 38B3526X012 38B3526X022 2 38B3526X032 38B3526X042 Key 1 Types 98L and 98H Regulator Body CL150 and CL300 RF Flanges TYPE 98H BODY MATERIAL TYPE 98L BODY MATERIAL BODY SIZE Steel Stainless Steel Steel Stainless Steel NPS DN CL150 RF CL300 RF CL150 RF CL300 RF CL150 RF CL300 RF CL150 RF CL300 RF 1 2 15 1V5178X0012 20A4987X0A2 1V5178X0022 20A4987X012 25A9930X022 20A4701X012 25A9930X012 20A4701X022 3 4 20 15A6098X022 23B9543X022 15A6098X012 23B9543X012 2V4264X0022 14B2317X012 2V4264X0012 14B2317X022 1 25 2V3805X0012 2U8048X0012 2V3805X00B2 2U8048X0022 2V3641X0022 2U8047X0012 2V3641X0012 2U8047X0062 1 1 2 40 21B0804X012 1V4541X0012 21B0804X022 1V4541X0022 2 50 10A0192X012 10A4986X012 10
14. Bologna 40013 Italy Tel 39 051 419 0611 Chartres 28008 France Tel 33 2 37 33 47 00 Middle East and Africa Dubai United Arab Emirates Tel 011 971 4811 8100 TESCOM Emerson Process Management Tescom Corporation USA Headquarters Elk River Minnesota 55330 2445 USA Tels 1 763 241 3238 1 800 447 1250 Europe Selmsdorf 23923 Germany Tel 49 38823 31 287 Asia Pacific Shanghai 201206 China Tel 86 21 2892 9499 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 Regulator Technologies Inc 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 Regulator Technologies Inc product remains solely with the purchaser Emerson Process Management Regulator Technologies Inc 1
15. Instruction Manual Form 1570 March 2014 Types 98L and 98H Types 98L and 98H Backpressure Regulators and Relief Valves Failure to follow these instructions or to properly install and maintain this equipment could result in an explosion fire and or chemical contamination causing property damage and personal injury or death Fisher backpressure regulators and relief valves must be installed operated and maintained in accordance with federal state and local codes rules and regulations and Emerson Process Management Regulator Technologies Inc instructions W6155 If a leak develops or if the outlet continually vents gas service to the unit may be required Failure to correct trouble could result in a hazardous condition Only a qualified person must install or service the unit Installation operation and maintenance procedures performed by unqualified personnel may result in improper adjustment and unsafe operation Either Weis condition may result in equipment damage TYPE 98H OR 98HM TYPE 98L or personal injury Use qualified personnel Figure 1 Types 98L and 98H Backpressure Regulators when installing operating and maintaining the Types 98L and 98H backpressure regulators and relief valves Description and Relief Valves Types 98L 98H direct operated spring loaded Introduction backpressure regulators or relief valves Typical applications include use in wash tanks small hea
16. Kits Elastomer Trim include keys 3 4 10 12 21 22 and 24 NPS 1 4 R98LX000012 NPS 1 2 DN 15 body R98LX000022 NPS 3 4 and 1 DN 20 and 25 bodies R98LX000032 Metal Trim include keys 3 4 10 12 and 19 NPS 1 4 R98LX000042 NPS 1 2 DN 15 body R98LX000052 NPS 3 4 and 1 DN 20 and 25 bodies R98LX000062 Type 98H Parts kit Elastomer Trim include keys 3 4 10 12 and 14 for NPS 1 1 2 and 2 DN 40 and 50 only 21 22 and 24 NPS 1 4 body R98HX000012 NPS 1 2 DN 15 body R98HX000022 NPS 3 4 and 1 DN 20 and 25 bodies R98HX000032 NPS 1 1 2 and 2 DN 40 and 50 bodies R98HX000072 Metal Trim include keys 3 4 10 12 and 19 NPS 1 4 body R98HX000042 NPS 1 2 DN 15 body R98HX000052 NPS 3 4 and 1 DN 20 and 25 bodies R98HX000062 NPS 1 1 2 and 2 DN 40 and 50 bodies R98HX000082 Type 98HM Parts Kits include keys 3 4 10 12 19 21 22 24 and 53 416 Stainless steel trim With Fluorocarbon FKM O rings R98HMX00012 With Ethylenepropylene EPDM O rings R98HMXEPR12 316 Stainless steel With Fluorocarbon FKM O rings R98HMX00022 With Ethylenepropylene EPDM O rings R98HMXEPR22 1 Body See following table 2 Spring Case Type 98H Cast iron Standard NPS 1 4 body 2E391219012 NPS 1 2 DN 15 body 2J496219012 NPS 3 4 and 1 DN 20 and 25 bodies 3E397819012 NPS 1 1 2 and 2 DN 40 and 50 bodies Recommended spare part Types 98L and 98H Key Description Part Number 2 Spring Case continued Type 98H continued Cast iron
17. L343035072 1P787535132 1P787535072 1C853806992 1C8538X0052 1D288806992 1N530106382 1D2888X0042 1C782106992 1C7821X0072 1D288806992 1N530106382 1N5301X0022 1N5301X0012 1C7821X0062 1C7821X0072 1C7821X0032 1C7821X0052 Key 22 22 23 24 25 26 27 28 29 30 45 50 Types 98L and 98H Description Part Number O ring continued Type 98HM Elastomer Seat Only continued NPS 1 1 2 and 2 DN 40 and 50 bodies Nitrile NBR 1P787403202 Fluorocarbon FKM 1P787406382 Ethylenepropylene EPDM 1P7874X0032 Perfluoroelastomer FFKM 1P7874X0022 L ring Type 98H only Elastomer seat only NPS 1 1 2 and 2 DN 40 and 50 bodies Nitrile NBR 1P787403202 Fluorocarbon FKM 1P787406382 Lock Washer Steel NPS 1 4 and 1 2 DN 15 bodies 1C225628982 NPS 3 4 and 1 DN 20 and 25 bodies 1H624328992 NPS 1 1 2 and 2 DN 40 and 50 bodies 14487828992 Machine Screw Stainless steel Elastomer seat only NPS 1 4 body NACE 1L346238992 NPS 1 2 DN 15 body NACE 1J4159X0012 NPS 3 4 and 1 DN 20 and 25 bodies 1L343538992 NPS 3 4 and 1 DN 20 and 25 bodies NACE 1L3435X0012 NPS 1 1 2 and 2 DN 40 and 50 bodies NACE 1P788638992 Diaphragm Head Type 98L Steel plated NPS 1 4 body 1L345525072 NPS 1 2 DN 15 body 1L339625072 NPS 3 4 and 1 DN 20 and 25 bodies 1L342125072 Type 98H NPS 1 1 2 and 2 DN 40 and 50 bodies Metal Seat with 416 Stainless steel Trim Steel 316 Stainless steel 1 of each required 1P
18. LANT 1 Lubricants and sealants must be selected such that they meet the temperature requirements Figure 3 Type 98L Relief Valve Assemblies Types 98L and 98H METAL SPRING DIAPHRAGMS KEY 11 il DIAPHRAGM GASKET KEY 19 FOR TYPE 98H WITH 2 METAL DIAPHRAGMS B 23 26 46 8 1 12 19 FOR TYPE 98H NPS 1 1 2 AND 2 DN 40 AND 50 WITH 2 GASKETS KEY 10 j AND 2 DIAPHRAGM HEADS KEY 25 L 5 6 md L 10 4 2727 3047029 FOR TYPE 98H NPS 1 4 THROUGH 1 DN 25 3 TYPE 98H ASSEMBLY WITH METAL DIAPHRAGM L 21 24 TYPE 98H ASSEMBLY WITH ELASTOMER DIAPHRAGM 30A7030 APPLY LUBRICANT OR SEALANT L ANTI SEIZE COMPOUND S MULTI PURPOSE PTFE THREAD SEALANT 1 Lubricants and sealants must be selected such that they meet the temperature requirements Figure 4 Type 98H Relief Valve Assemblies Types 98L and 98H METAL SPRING DIAPHRAGMS KEY 11 TYPE 98HM WITH 2 METAL DIAPHRAGMS FOR TYPE 98HM WITH 2 METAL DIAPHRAGMS ASSEMBLE DIAPHRAGM GASKETS AND METAL DIAPHRAGMS ALTERNATELY AS SHOWN ABOVE 10 TYPE 98HM ASSEMBLY WITH METAL SEAT AND DIAPHRAGM 37B4753 O APPLY LUBRICANT L ANTI SEIZE COMPOUND HHH 4 3 1 Lubricants must be selected such that they meet the temperature requirement
19. PE 98H RELIEF SET SPRING WIRE SPRING FREE PRESSURE RANGE PRESSURE RANGE SPRING COLOR DIAMETER LENGTH NPS DN psig bar psig bar Inch mm Inch mm 2107 0 14 to 0 48 15 to 35 1 0 to 2 4 Yellow 1E392527022 0 148 3 76 2 00 50 8 14 M 6to 14 0 41 to 0 97 25 to 75 1 7 to 5 2 Green 1E392627012 0 170 4 32 2 00 50 8 12 to 25 0 83 to 1 7 70 to 140 4 8 to 9 6 Red 1E392727142 0 207 5 26 1 93 49 0 20 to 38 1 4 to 2 6 130 to 200 9 0 to 13 8 Blue 1L346127142 0 225 5 72 2 08 52 8 2107 0 14 to 0 48 15 to 35 1 0 to 2 4 Yellow 1E395627022 0 207 5 26 2 50 63 5 1 2 15 6 to 14 0 41 to 0 97 25 to 75 1 7 to 5 2 Green 1D7455T0012 0 234 5 94 1 02 25 9 12 to 25 0 83 to 1 7 70 to 140 4 8 to 9 6 Red 1E395727192 0 281 7 14 2 44 62 0 20 to 38 1 4 to 2 6 130 to 200 9 0 to 13 8 Blue 1L380027142 0 331 8 41 2 25 572 2107 0 14 to 0 48 15 to 35 1 0 to 2 4 Yellow 1E398927022 0 306 7 77 4 00 102 3 4 20 6 to 14 0 41 to 0 97 25 to 75 1 7 to 5 2 Green 1E399027142 0 343 8 71 4 00 102 and 1 and 25 12 to 25 0 83 to 1 7 70 to 140 4 8 to 9 6 Red 1E399127162 0 406 10 3 4 00 102 20 to 38 1 4 to 2 6 130 to 200 9 0 to 13 8 Blue 1L380127082 0 468 11 9 3 75 95 3 51035 0 3 to 2 4 Dark Gray 1E792327092 0 468 11 9 6 56 167 1 1 2 40 20 to 65 1 4 to 4 5 Light Blue 1E795327082 0 531 13 5 6 56 167 and2 and 50 50 to 100 3 5 to 6 9 Light Gray 1E795427082 0 562 14 2 6 56 167 80 to 170 5 5to 11 7 Black 1P788827082 0 625 15 9 6 56 167 1 All springs may be backed off
20. am pressure Pressure changes register under the diaphragm see Figure 2 through a registration hole in the valve body through upstream sensing line connection for Type 98HM When the pressure increases beyond the spring setting the diaphragm pressure overcomes the spring compression This causes the valve plug to move away from the orifice The flow line through the valve is open and excess pressure is vented When upstream pressure drops back to normal the valve resumes its closed position Installation Personal injury or system damage may result if this relief valve backpressure regulator is installed where service conditions could exceed the limits given on the Specifications section or regulator nameplate Installations should be adequately protected from physical damage Overpressuring any portion of this equipment may cause equipment damage leaks in the relief valve backpressure regulator or personal injury due to bursting of pressure containing parts System operation within the limits shown in the Specifications section page 2 does not eliminate the possibility of damage from external sources or debris in the pipeline The relief valve backpressure regulator should be inspected for damage regularly and after any overpressure condition Types 98L and 98H Table 1 Types 98L and 98H Relief Set Pressure Ranges BODY SIZES TYPE 98L RELIEF SET TY
21. arbon NACE 15 Adjusting Screw Steel plated NPS 1 4 body standard NPS 1 2 DN 15 body standard NPS 1 2 DN 15 body For Handwheel Part Number 1L3411X0012 1L3434X0032 1L341104022 1L343404022 1P788004022 See Tables 1 and 2 See following table 1C782206992 1K756106382 1K756135072 1C216032992 1D995448702 1J496428982 NPS 1 2 DN 15 body Type 98HM only SST Spring 109954 0032 NPS 3 4 and 1 DN 20 and 25 bodies standard NPS 3 4 and 1 DN 20 and 25 bodies Type 98HM only SST Spring NPS 1 1 2 and 2 DN 40 and 50 bodies standard 16 Cap Screw Zinc plated steel Type 98L NPS 1 4 body 10 required NPS 1 2 DN 15 body 10 required 14330828982 1A3308X0092 14680128992 14407824052 14381624052 NPS 3 4 and 1 DN 20 and 25 bodies 12 required 1A336924052 Types 98H and 98HM NPS 1 4 body not available to Type 98HM 6 required NPS 1 2 DN 15 body 8 required 1A391724052 1A352624052 NPS 3 4 and 1 DN 20 and 25 bodies 8 required 1A341824052 NPS 1 1 2 and 2 DN 40 and 50 bodies 8 required 16 Cap Screw continued Stainless alloy Type 98L NPS 1 4 body 10 required NPS 1 2 DN 15 body 10 required NPS 3 4 and 1 DN 20 and 25 bodies 12 required Type 98H NPS 1 4 body 6 required NPS 1 2 DN 15 body 8 required NPS 3 4 and 1 DN 20 and 25 bodies 8 required NPS 1 1 2 and 2 DN 40 and 50 bodies 8 required Type 98HM For Steel Springs NPS 1 2 DN 15 body 8 require
22. d NPS 3 4 and 1 DN 20 and 25 8 required bodies NPS 1 1 2 and 2 DN 40 and 50 8 required bodies For Stainless Springs NPS 1 2 DN 15 body 8 required NPS 3 4 and 1 DN 20 and 25 8 required bodies 17 Jam Nut Zinc plated steel NPS 1 4 body NPS 1 2 DN 15 body NPS 1 2 DN 15 body For Type 98HM only with SST Spring NPS 3 4 and 1 DN 20 and 25 bodies NPS 3 4 and 1 DN 20 and 25 bodies For Type 98HM only with SST Spring NPS 1 1 2 and 2 DN 40 and 50 bodies 1K568428982 1A4078X0102 1A3816X0152 1A3369X0112 1A3917X0062 1A3526X0142 1A3418X0332 1K5684X0032 14352624052 14341824052 1K568428982 1A3526X0142 1A3418X0332 1A352224122 1A353724122 T1208635442 1A319224122 1A3192K0012 1A368124112 Key Description 18 Drive Screw not shown 2 required 19 Diaphragm Gasket Composition use with 302 Stainless steel diaphragm Type 98H NPS 1 4 body NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies NPS 1 1 2 and 2 DN 40 and 50 bodies Type 98L NPS 1 4 body NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies Type 98HM Composition 2 required NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies NPS 1 1 2 and 2 DN 40 and 50 bodies Graphite 2 required NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies 20 Diaphragm Protector PTFE not shown Type 98L NPS 1 4 body NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies Type 98H NPS 1 4 body NPS 1 2 DN
23. imited to 200 F 93 C for hot water 40 to 275 F 40 to 135 C 0 to 425 F 18 to 218 C 40 to 400 F 40 to 207 C Temperature Capabilities for Metal Parts MATERIAL TEMPERATURE RANGE Cast iron 40 to 406 F 40 to 207 C WCC Steel 20 to 450 F 29 to 232 C CF8M Stainless steel 40 to 450 F 40 to 232 C Type 98HM Sensing Line Connection NPS 1 2 1 1 2 or 2 DN 15 40 or 50 Body 1 8 NPT NPS 3 4 or 1 DN 20 or 25 Body 1 4 NPT Pressure Registration Types 98L and 98H Internal Type 98HM External Options Handwheel or tee handle for Types 98L and 98H Tapped spring case vent for Types 98L 98H and 98HM Seal washer to permit spring case pressure loading for Types 98L 98H and 98HM Approximate Weights Type 98L NPS 1 4 Body 6 pounds 3 kg NPS 1 2 DN 15 Body 13 pounds 6 kg NPS 3 4 DN 20 Body 30 pounds 14 kg NPS 1 DN 25 Body 30 pounds 14 kg Type 98H NPS 1 4 Body 7 pounds 4 kg NPS 1 2 DN 15 Body 7 pounds 2 kg NPS 3 4 DN 20 Body 16 pounds 7 kg NPS 1 DN 25 Body 16 pounds 7 kg NPS 1 1 2 DN 40 Body 55 pounds 25 kg NPS 2 DN 50 Body 55 pounds 25 kg Type 98HM NPS 1 2 DN 15 Body 8 pounds 4 kg NPS 3 4 or 1 DN 20 or 25 Body 20 pounds 9 kg NPS 1 1 2 or 2 DN 40 or 50 Body 73 pounds 33 kg 1 The pressure temperature limits in this instruction manual or any applicable standard limitation should not be exceeded 2 Tempe
24. izes and End Connection Styles BODY MATERIAL WCC Steel CF8M Stainless steel 1 4 through 1 NPT NPS 1 2 through 1 DN 15 through 25 SWE CL 150 RF CL300 RF PN16 25 40 RF Cast Iron 98L 1 4 1 2 3 4 1 NPT 1 4 through 2 NPT NPS 1 2 through 2 DN 15 through 50 SWE CL150 RF CL300 RF PN 16 25 40 RF 1 4 1 2 3 4 1 MH 1 1 2 2 NPT 98HM 1 2 3 4 1 1 1 2 2 NPT Maximum Cold Working Pressures of Body Size and Materials BODY AND MAXIMUM INLET REGULATOR BODY SIZE SPRING CASE MATERIALS Cast Iron All Sizes Steel Stainless Steel Type 98L Cast Iron All Sizes Steel Stainless Steel Steel Stainless Steel Type 98H Type 98HM All Sizes Flow Coefficient C 35 IEC Sizing Coefficients BODY SIZE NPS DN 5 Fo d 1 4 EERE 0 91 0 83 1 2 15 0 83 0 69 3 4 and 1 20and25 078 nee 0 88 0 77 1 1 2 and2 40 and 50 0 92 0 85 Relief Pressure Ranges See Tables 1 and 2 Shutoff Classification Per ANSI FCI 70 3 2004 Metal Seats Class IV Polytetrafluoroethylene PTFE Class IV Elastomer Seats Class VI Temperature Capabilities for Elastomer Parts MATERIAL Nitrile NBR Neoprene CR Fluorocarbon Ethylenepropylene Perfluoroelastomer PTFE Diaphragm protector TEMPERATURE RANGE 40 to 180 F 40 to 82 C 40 to 180 F 40 to 82 C 0 to 300 F 18 to 149 C L
25. nd 2 DN 40 and 50 bodies Ethylenepropylene EPDM NPS 1 2 DN 15 body NPS 3 4 and 1 DN 20 and 25 bodies NPS 1 1 2 and 2 DN 40 and 50 bodies Recommended spare part Industrial Regulators Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75070 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Shanghai 201206 China Tel 86 21 2892 9000 Europe Bologna 40013 Italy Tel 39 051 419 0611 Middle East and Africa Dubai United Arab Emirates Tel 011 971 4811 8100 For further information visit www fisherregulators com Part Number Key Description Part Number 53 O ring for 98 only continued T Fluorocarbon FKM NPS 1 2 DN 15 body 1R620106382 NPS 3 4 and 1 DN 20 and 25 bodies 1D237506382 NPS 1 1 2 and 2 DN 40 and 50 bodies 1D2620X0032 1H292406992 Perfluoroelastomer FFKM 1D2375X0022 not available with Composition Diaphragms 1D262006992 NPS 1 2 DN 15 body 1V8029X0022 NPS 3 4 and 1 DN 20 and 25 bodies 1D2375X0052 1V8029X0012 NPS 1 1 2 and 2 DN 40 and 50 bodies 1D2620X0082 1D2375X0042 54 Y602 12 shown in the 1D2620X0052 98HM Series assemblies 27A5516X012 Natural Gas Technologies Emerson Process Management Regulator Technologies Inc USA Headquarters McKinney Texas 75070 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Singapore 128461 Singapore Tel 65 6770 8337 Europe
26. nd replace the O ring 8 10 11 12 13 14 Separate the remainder of the diaphragm unit parts Take the locknut key 26 off of the pusher post key 6 Slide off the lock washer key 23 lower spring seat diaphragm head Type 98L diaphragm washer key 7 and gasket key 10 Slip the plug key 4 onto the pusher post Place a gasket key 10 on the shaft of the pusher post key 6 over the threaded portion until it rests on the base of the post If elastomer diaphragm is used place a metal washer key 7 on top of the gasket For Type 98H NPS 1 1 2 to 2 DN 40 to 50 with metal diaphragm place another gasket on the shaft of the pusher post until it rests on the bottom diaphragm head key 25 see Figure 4 Refer to Figures 3 to 5 Note If a metal diaphragm is to be replaced by an elastomer diaphragm or an elastomer diaphragm by a metal diaphragm a new pusher post is required Each diaphragm material requires a different pusher post length and make sure the proper number of metal or elastomer diaphragm that will be used is followed Refer to the Parts List section for the correct number of diaphragm to be used For the metal diaphragms replace the large diaphragm gasket key 19 on the surface of the body key 1 that will support the diaphragms There will be two diaphragms used per regulator except for Type 98L NPS 1 4 with 2 to 7 psi 0 14 to 0 48 bar set pressure range which uses only one me
27. nscrew the valve plug guide key 5 and then the orifice The valve plug can be removed by sliding it off of the pusher post key 6 Note If damage to elastomer or metal seating surfaces is severe replace the orifice key 3 and valve plug O ring key 22 with new parts However by following the lapping procedure below it is possible to repair metal seating surfaces if they are only slightly worn or scratched Lapping procedure a Place a small amount of 500 grit silicon carbide or aluminum oxide lapping compound on a flat surface such as a piece of heavy plate glass Take the valve plug key 4 or orifice key 3 and move it in a figure 8 motion on the lapping compound Do not allow the part to tip or rock since this would round the corners o c Repeat step b for each part using an 800 grit or 1000 grit silicon carbide or aluminum oxide lapping compound d Wash away all traces of the lapping compound To help prevent scratching the seating surfaces a light coat of oil may be applied before returning the valve plug and orifice to the body key 1 See Table 3 for torque specifications Return the orifice and valve plug guide key 5 to the body Place a small amout of sealant on the threads before installing the valve plug guide and the orifice See Table 3 for torque specifications To replace the valve plug O ring key 22 remove the screw key 24 and O ring retainer key 21 from the plug Remove a
28. ppropriate spring Be sure to label the valve to indicate the new pressure range Always use a pressure gauge to monitor pressure when making adjustments All regulator springs can be backed off to 0 psig 0 bar Recommended set pressure ranges available maximum inlet pressures and temperatures and color codes of the respective springs are shown in the Specifications section and Tables 1 and 2 Types 98L and 98H Loosen the jam nut key 17 To increase the setting turn the adjusting screw key 15 clockwise Turn the adjusting screw counterclockwise to decrease the setting Tighten the jam nut Shutdown Close the upstream shutoff valve and release all pressure from the backpressure regulator relief valve Maintenance To avoid personal injury and equipment damage isolate the valve from all pressure Cautiously release pressure from the valve before attempting disassembly Due to normal wear and damage that may occur from external sources relief valve parts such as the O rings gaskets diaphragm orifice and valve plug should be inspected periodically and replaced as necessary The frequency of inspection and replacement depends upon the severity of service conditions or the requirements of state and federal laws Instructions are given below for disassembly of the Types 98L and 98H backpressure regulators relief valves These valves do not have to be removed from the pipeline to inspect internal parts Suitable lub
29. rature and or the body end connection may decrease these maximum pressures 3 Maximum inlet pressure equals set pressure plus buildup 4 Pressure and or the body end connection may decrease these maximum temperatures 5 Not for use on steam service 6 Not available for Type 98HM CONTROL SPRING REGISTRATION HOLE ELASTOMER DIAPHRAGM VALVE PLUG O RING SEAT 6925 ORIFICE TYPE 98H ALSO TYPICAL OF TYPE 98L EE INLET PRESSURE EE OUTLET PRESSURE LLL ATMOSPHERIC PRESSURE M1155 Types 98L and 98H CONTROL SPRING ELASTOMER DIAPHRAGM VALVE PLUG TO UPSTREAM SENSING LINE TYPE 98HM Figure 2 98 Series Operational Schematics The Type 98HM can be used for backpressure or relief applications in liquid gas or steam service The Type 98HM features a sensing line connection for sensing pressure externally from the regulator The Type 98HM is a direct operated spring to close regulator and requires no external power to operate A seal washer for the set screw can be included when applications require pressure loading of the spring case not available on NPS 1 1 2 and 2 DN 40 and 50 bodies Note Using a Type 98HM as a relief valve does not exclude the installation of an ASME certified full flow relief valve as specified by local codes and regulations or system design Principle of Operation Relief or backpressure valves respond to changes in upstre
30. ricants are indicated on the assembly drawings Apply the lubricants as the relief valve is being reassembled Refer to Figures 3 4 and 5 while servicing the relief valve Metal diaphragms have thin sharp edges To avoid hand cuts use caution when handling the diaphragm and particularly the diaphragm edge Type 98 relief valves contain or may contain a thin metal diaphragm Use care when handling the metal diaphragms to prevent hand injuries or damage to the diaphragm 1 Relieve the spring tension by loosening the jam nut key 17 and turning the adjusting screw key 15 counterclockwise Remove the cap screws key 16 Lift off the spring case key 2 upper spring seat key 9 and spring key 11 2 Lift out the diaphragm unit which includes the pusher post key 6 lower spring seat key 8 diaphragm Types 98L and 98H 4 5 6 head key 25 Type 98L washer key 7 valve plug key 4 and diaphragm key 12 There will be two diaphragms if the diaphragm material is metal or fluorocarbon FKM except for Type 98L NPS 1 4 2 to 7 psi 0 14 to 0 48 bar range which uses only one metal diaphragm For Type 98HM two diaphragms are also required if material used is Ethylenepropylene EPDM except for NPS 3 4 or 1 DN 20 or 25 which uses only one Ethylenepropylene EPDM diaphragm Refer to Figures 3 4 and 5 for the diaphragm and gasket assembly Check the orifice key 3 If it needs replacing or repairing u
31. s TYPE 98HM ASSEMBLY WITH ELASTOMER SEAT AND METAL DIAPHRAGM 37B4754 APPLY LUBRICANT OR SEALANT L ANTI SEIZE COMPOUND S MULTI PURPOSE PTFE THREAD SEALANT 1 Lubricants and sealants must be selected such that they meet the temperature requirements amp amp Q RU SS DUI Hn L Figure 5 Type 98HM Relief Valve Assemblies o Types 98L and 98H 2 7 A Ta p X Y N OIS LL amp C amp amp J T b S f Fr C2 9 m 4 LX ps BAS SM PX ie O ades TYPE 98HM WITH ELASTOMER SEAT AND DIAPHRAGM APPLY LUBRICANT OR SEALANT L ANTI SEIZE COMPOUND S MULTI PURPOSE PTFE THREAD SEALANT 1 Lubricants and sealants must be selected such that they meet the temperature requirements Figure 5 Type 98HM Relief Valve Assemblies continued gt X 2 TYPE 98HM Ze ll LUBE OIL RESERVOIR LUBE OIL COOLER Figure 6 Type 98HM Used in a Typical Bypass Application Types 98L and 98H Key Description 3 Orifice 4 Valve Plug 5 Valve Plug Guide Types 98L and 98H 416 Stainless steel NPS 1 4 body NPS 1 2 DN 15 body NPS 3 4 and 1 DN 2
32. sure condition Vents If using a Type 98L 98H or 98HM Backpressure Regulator or Relief Valve on hazardous or flammable gas service personal injury and property damage could occur due to fire or explosion of vented gas that may have accumulated To prevent such injury or damage provide piping or tubing to vent the gas to a safe well ventilated area Also when venting a hazardous gas the piping or tubing should be located far enough away from any buildings or windows so to not create a further hazard and the vent opening should be protected against anything that could clog it If remote venting is necessary an optional tapped vent in the spring case is available Install remote vent lines in the spring case and outlet openings The vent lines must have the largest practical diameter and be as short as possible with a minimum number of bends or elbows Startup Key numbers are shown in Figures 3 through 5 With proper installation completed and system equipment properly adjusted close any vent valves and slowly open the upstream shutoff valve while using pressure gauges to monitor pressure If set pressure adjustment is necessary monitor the inlet pressure with a gauge during the adjustment procedure Adjustment Each unit is factory set for the pressure specified on your order The allowable spring range is stamped on the nameplate If a pressure setting beyond the indicated range is required replace with the a
33. tal diaphragm The raised surfaces of the metal diaphragms should be placed in the unit so that they are facing toward the assembler toward the spring except only when one diaphragm is being used then the raised surface should be facing down towards the body See Figures 3 to 5 as references Slip the lower spring seat key 8 and lock washer key 23 back onto the pusher post Screw on the locknut key 26 and retum the diaphragm unit to the body key 1 Set the spring key 11 in the lower spring seat and place the upper spring seat key 9 on the spring Put the spring case key 2 over the spring and onto the body Tighten the cap screws key 16 finger tight only To ensure proper slack in the diaphragm apply some spring compression by turning the adjusting screw clockwise Finish tightening the cap screws Parts Ordering When corresponding with your local Sales Office about this equipment always reference the equipment serial number stamped on the nameplate When ordering replacement parts specify the complete 11 character part number of each required part as found in the following parts list Separate kits containing all recommended spare parts are available Parts List Note In this parts list parts marked NACE are intended for corrosion resistant service as detailed in the NACE International standard MR0175 2003 Types 98L 98H and 98HM Figures 3 4 and 5 Key Description Part Number Type 98L Parts
34. ters Scope of the Manual fuel and oil lines air supply systems test fixtures and sterilizers Relief pressure ranges are 2 to 38 psig This manual provides instructions for the installation 0 14 to 2 6 bar in four ranges for Type 98L and 15 to adjustment maintenance and parts ordering 200 psig 1 0 to 13 8 bar in four ranges for each sizes for information of Types 98L and 98H Backpressure Type 98H Type 98L is available on body sizes NPS 1 4 Regulators and Relief Valves Instructions and parts 1 2 3 4 and 1 DN 15 20 and 25 and Type 98H on body lists for other equipment mentioned in this instruction sizes NPS 1 4 1 2 3 4 1 1 1 2 and 2 DN 15 20 25 40 manual are found in separate manuals and 50 www fisherregulators com AS EMERSON D100258X012 Types 98L and 98H Specifications Available Constructions Type 98L Direct operated low pressure backpressure regulator relief valve with internal pressure registration and standard adjusting screw for 2 to 38 psig 0 14 to 2 6 bar set pressure range Type 98H Direct operated high pressure backpressure regulator relief valve with internal pressure registration and standard adjusting screw for 5 to 200 psig 0 34 to 13 8 bar set pressure range Type 98HM Direct operated high pressure backpressure regulator relief valve with external pressure registration and standard adjusting screw for 5 to 275 psig 0 34 to 19 0 bar set pressure range Body S
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