Emerson EZH Series Instruction Manual Download

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TYPE PRX/120 OR PRX/125

TYPE PRX/120 OR PRX/120-AP

TYPE PRX/120-AP OR PRX/125-AP

TYPE PRX/125 OR PRX/125-AP

Figure 13. PRX Series Pilot Assemblies

S - BLEED PORT
B - SUPPLY PORT
L - LOADING PORT
A - SENSING PORT
D - DAMPER
R - RESTRICTOR

EZH and EZHSO Series

Summary of Contents for EZH Series

Page 1: ...e regulator Introduction Scope of the Manual This manual provides installation startup and maintenance instructions and parts ordering information for the EZH and EZHSO Series pressure reducing regulators PRX Series SLORWV DQG 7 SH 6 SLORW VXSSO OWHU UHJXODWRU QIRUPDWLRQ on other equipment used with this regulator is found in VHSDUDWH PDQXDOV Product Description EZH Series Spring to Close and EZHS...

Page 2: ... QGLFDWRU Whisper Trim Cage 7KH SUHVVXUH WHPSHUDWXUH OLPLWV LQ WKLV QVWUXFWLRQDO 0DQXDO DQG DQ DSSOLFDEOH VWDQGDUG RU FRGH OLPLWDWLRQ VKRXOG QRW EH H FHHGHG KHQ XVLQJ D 7 SH 6 SLORW VXSSO OWHU UHJXODWRU WKH GLIIHUHQWLDO SUHVVXUH DFURVV WKH UHJXODWRU PXVW EH DW OHDVW SVLG EDU G IRU RSWLPXP UHJXODWRU SHUIRUPDQFH 7 SHV 35 DQG 6 OXRURFDUERQ 0 HODVWRPHU LV OLPLWHG WR 0D LPXP 2SHUDWLQJ LIIHUHQWLDO 3UHVV...

Page 3: ... CAUSE EFFECT REGULATOR REACTION MODE Type EZH Type EZHSO Filter LOWHU ORFNHG ORJJHG HEULV RU DURPDWLFV present in the gas HFUHDVH RI VXSSO pressure gives decrease of loading pressure Close Open Pilot disk Pilot cannot be closed HEULV RU DURPDWLFV present Sour gas QFUHDVH loading pressure Open Open Pilot lower diaphragm Pilot cannot control HEULV RU DURPDWLFV present Sour gas HFUHDVH loading press...

Page 4: ...DISK PILOT CONTROL SPRING PILOT LOWER DIAPHRAGM REGULATOR ACTUATOR DIAPHRAGM MAIN VALVE DISK PLUG FILTER PILOT BLEED RESTRICTION CHECK VALVE Figure 4 Type EZHSO Spring to Open Operational Schematic TYPE PRX S BLEED PORT B SUPPLY PORT L LOADING PORT A SENSING PORT TYPE SA 2 V SENSING PORT R PILOT SUPPLY PORT M INLET PORT 0 B TYPE EZHSO FILTER PILOT DISK PILOT LOWER DIAPHRAGM CHECK VALVE PILOT BLEED...

Page 5: ...DJP ORZHU FKDPEHU 3LORW VXSSO SUHVVXUH is provided to the regulator actuator diaphragm upper FKDPEHU 7KLV SUHVVXUH RSSRVHV WKH PDLQ VSULQJ IRUFH that tends to open the regulator and opposes the loading SUHVVXUH 2XWOHW SUHVVXUH RSSRVHV WKH SLORW FRQWURO VSULQJ PRX Series pilot is supplied with pressure coming from pre regulator Type SA 2 which reduces inlet pressure to the YDOXH RI RXWOHW SUHVVXUH ...

Page 6: ...y 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 the installation is in compliance with all applicable codes and regulations Additionally physical damage to the regulator could break the pilot off the main valve causing personal injury a...

Page 7: ...36 1 DQG larger sizes connect the downstream control line from the port on the upper casing to a straight run of pipe WR SLSH GLDPHWHUV IURP WKH UHJXODWRU RXWOHW XVLQJ LQFK PP RU ODUJHU SLSLQJ I VXFK D GLVWDQFH LV not practical connect the control line away from elbows VZDJHV QLSSOHV RU DQ DUHD ZKHUH DEQRUPDO ÀRZ YHORFLWLHV RFFXU Note The optimal location for the sense and bleed lines is between t...

Page 8: ...eam pilots will be connected to the downstream piping see LJXUH Connect the pilot supply line for the downstream regulator to the outlet R port of the Type SA 2 pilot VXSSO OWHU UHJXODWRU Working Monitor Regulator ROORZ WKH SURFHGXUH LQ WKH OO QVWDOODWLRQV VHFWLRQ DQG WKHQ FRQWLQXH ZLWK VWHS RI WKLV VHFWLRQ 7KH VHQVH line of the upstream monitor pilot from Port A on the Type PRX 125 and the bleed ...

Page 9: ... DGMXVWPHQW LV FRPSOHWHG DQG YHUL HG WLJKWHQ WKH ORFNQXW WR ORFN WKH DGMXVWLQJ VFUHZ LQ SRVLWLRQ 1R DGMXVWPHQW LV QHHGHG WR WKH 7 SH 6 SLORW VXSSO OWHU UHJXODWRU GMXVWLQJ WKH PRQLWRU UHJXODWRU LJXUH LV WKH VDPH DV DGMXVWLQJ WKH PDLQ UHJXODWRU 0RQLWRU VHWSRLQWV DUH VHW VOLJKWO KLJKHU WKDQ WKH PDLQ UHJXODWRU 7KH PRQLWRU SUHVVXUH setting should be adjusted so it is at minimum two times the pilot accu...

Page 10: ...HWWLQJ PXVW EH FKDQJHG EH VXUH WR NHHS VRPH WHQVLRQ RQ WKH VSULQJ 7KLV ZLOO SUHYHQW WUDSSLQJ LQOHW SUHVVXUH GXULQJ EORZ GRZQ Slowly close the valves in the following order D QOHW EORFN YDOYH E 2XWOHW EORFN YDOYH F RQWURO OLQH YDOYH V LI XVHG 2SHQ WKH YHQW YDOYHV WR GHSUHVVXUL H WKH V VWHP Maintenance The regulator parts are subject to normal wear and must EH LQVSHFWHG SHULRGLFDOO DQG UHSODFHG DV Q...

Page 11: ...KROH Carefully remove the sleeve assembly from the sleeve JXLGH NH XVLQJ WKH H HEROW NH Note The sleeve assembly may be oriented upside down for ease of maintenance but care should be taken not to drop small components into the sleeve assembly Remove socket head cap screws key 33 and lock washers key 32 on EZH Series and key 154 on 62 6HULHV For EZH Series Lift off the disk retainer key 31 and GLV...

Page 12: ...key 152 Tool Size PP PP PP 24 mm Torque ft lbs 40 45 to 50 45 to 50 1 m 54 81 WR WR Hex Head Cap Screw key 154 Tool Size 3 mm 5 mm PP 3 mm Torque ft lbs 10 1 m 14 Hex Head Nut key 155 Tool Size PP Torque ft lbs 30 1 m 41 0RXQW 2 ULQJ NH RQ WKH VSDFH EHWZHHQ WKH FDS NH DQG WKH XSSHU DFWXDWRU FDVLQJ NH 6FUHZ WKH H HEROWV NH RQ WKH FDS NH For EZHSO Series 3ODFH WKH ZDVKHU NH RQ WKH VWHP NH VVHPEOH RQ...

Page 13: ...H LI QHFHVVDU QVSHFW WKH ORZHU DFWXDWRU FDVLQJ NH 2 ULQJV NH V DQG DQWL IULFWLRQ VSOLW ULQJV NH DQG DQWL IULFWLRQ ULQJ NH IRU GDPDJH RU ZHDU I GDPDJHG remove the O ring and split rings and replace with QHZ SDUWV LJKWO OXEULFDWH WKH 2 ULQJ NH DQG VSOLW ULQJV 3ODFH WKH VSOLW ULQJV LQ WKH ERG UVW WKHQ VOLGH WKH 2 ULQJ NH EHWZHHQ WKH VSOLW ULQJV XEULFDWH DQG PRXQW 2 ULQJ NH RXWVLGH RI WKH ORZHU DFWXDW...

Page 14: ...g key 2 on top of O ring key 34 in body NH ZLWK WKH FXUYHG VLGH GRZQ DQG VHDW HGJH XS 3ODFH FDJH NH RQ WKH WRS RI VHDW ULQJ NH 3ODFH ORZHU FDVLQJ NH RQ WRS RI WKH ERG 2Q 136 1 FRQVWUXFWLRQV UHSODFH ZDVKHU NH ZLWK QHZ SDUWV 7LJKWHQ FDS VFUHZV NH 6FUHZ VOHHYH JXLGH NH LQWR ORZHU FDVLQJ NH XWLOL LQJ FDS NH RU E XVLQJ D FURZEDU Lubricate the sleeve key 14 in the upper plate contact area and assemble t...

Page 15: ...WKHQ WKH RWKHU EDFN XS ULQJ 3XVK LQWR JURRYH RI WKH LQGLFDWRU WWLQJ NH Slide the travel indicator bushing key 140 over the WUDYHO LQGLFDWRU VWHP NH DQG WLJKWHQ UPO LQ SODFH ZLWK D WRUTXH RI IW OEV 1 P Replace the travel indicator cover key 138 and tighten UPO LQ SODFH PRX Series Maintenance CAUTION Always remove spring key 7 tension before performing maintenance on this unit To remove spring tensi...

Page 16: ...RPSOHWHO WLJKWHQ QVHUW ULQJ QXW NH DQG FRPSOHWHO WLJKWHQ DFN RXW UHVWULFWRU DGMXVWLQJ VFUHZ WXUQ Note When using a Type PRX 120 pilot with a Type PRX 125 pilot as a monitor use the following settings Restrictor completely tighten and then back out three full turns Damper back out until it stops QVWDOO SODWH NH DQG VFUHZ NH Type SA 2 Maintenance LVFRQQHFW SLORW VXSSO OWHU UHJXODWRU DQG UHPRYH LW IU...

Page 17: ...e PU REZHS3X0P12 136 1 1LWULOH 1 5 DQG OXRURFDUERQ 0 5 6 1 OXRURFDUERQ 0 5 6 Polyurethane PU REZHS4X0P12 136 DQG 1 DQG RGLHV 1LWULOH 1 5 5 1 OXRURFDUERQ 0 5 3RO XUHWKDQH 38 5 3 EZH Series XOO 5HSDLU LWV 136 DQG 1 DQG LQFOXGH NH V DQG 136 1 LQFOXGH NH V DQG 136 DQG 1 DQG LQFOXGH NH V DQG 136 1 1LWULOH 1 5 DQG OXRURFDUERQ 0 REZH1X00N22 OXRURFDUERQ 0 REZH1X00F22 Polyurethane PU REZH1X00P22 136 1 1LWU...

Page 18: ...62 6HULHV 0 136 DQG 1 DQG RGLHV 10 required for EZH Series UHTXLUHG IRU 62 6HULHV 5 2 ULQJ UHTXLUHG OXRURFDUERQ 0 136 1 0 136 1 0 136 1 0 136 1 EZH Series 0 EZHSO Series 1LWULOH 1 5 5 OXRURFDUERQ 0 0 136 DQG 1 DQG RGLHV UHTXLUHG for EZH Series 3 required for EZHSO Series 1LWULOH 1 5 5 OXRURFDUERQ 0 5 10 Pipe Plug NPS 1 2 and 3 1 DQG UHTXLUHG 136 DQG 1 DQG RGLHV UHTXLUHG 11 Actuator Upper Casing Ca...

Page 19: ...0 136 1 RG 0 136 1 RG 136 1 RG 5 136 1 RG 5 136 1 RG 5 H 1XW 6WHHO 136 1 RG UHTXLUHG 136 1 RG UHTXLUHG 136 1 RG UHTXLUHG 0 136 DQG 1 DQG RGLHV UHTXLUHG 0 6OHHYH GDSWRU DUERQ VWHHO EZH Series 136 1 RG 0 136 1 RG 0 136 1 RG 0 136 DQG 1 DQG RGLHV EZHSO Series 2 28 O ring OXRURFDUERQ 0 136 1 RG 0 136 1 RG 0 136 1 RG 0 2 ULQJ 3 EZH Series 136 1 0 136 1 0 136 1 0 136 1 1LWULOH 1 5 0 OXRURFDUERQ 0 0 136 ...

Page 20: ...QG 1 DQG RGLHV 5 EZHSO Series Polyurethane PU 136 1 5 136 1 5 136 1 5 136 1 5 136 DQG 1 DQG RGLHV 5 32 Lock Washer EZH Series only Stainless steel 136 1 RG UHTXLUHG 0 136 1 RG UHTXLUHG 0 136 1 RG UHTXLUHG 0 136 1 RG UHTXLUHG 0 136 DQG 1 DQG RGLHV UHTXLUHG 5 33 Socket Head Cap Screw 136 1 RG 6HULHV RQO UHTXLUHG 0 136 1 RG 6HULHV RQO UHTXLUHG 0 136 1 RG 6HULHV RQO UHTXLUHG 0 136 1 RG 6HULHV RQO UHTX...

Page 21: ...TXLUHG 82 Lower Spring Seat EZH Series only Carbon steel 136 DQG 1 DQG RGLHV RQO 2 DOO HDULQJ UHTXLUHG 6WHHO 136 DQG 1 DQG RGLHV RQO 2 7UDYHO QGLFDWRU RYHU 3ODVWLF 136 1 RG 0 136 1 RG 0 136 1 RG 0 136 DQG 1 DQG RGLHV 0 7UDYHO QGLFDWRU 6WHP 6WDLQOHVV VWHHO 136 1 RG 56 136 1 RG 56 136 1 RG 3 ERSA01803A0 136 1 RG 56 136 DQG 1 DQG RGLHV 5 QGLFDWRU XVKLQJ UDVV 56 7UDYHO QGLFDWRU LWWLQJ UDVV 136 DQG 1 D...

Page 22: ...W 6XSSO 6LQJOH 3LORW RQ JXUDWLRQ with standard body or tapped inlet body Key Description Part Number 3LSH 1LSSOH 136 DQG 1 DQG UHTXLUHG 136 DQG 1 150 300 X 150 and 200 1 required 48 Tube Elbow NPS 1 2 and 3 1 DQG UHTXLUHG 136 1 UHTXLUHG WHUQDO 7XEH RQQHFWRU 136 DQG 1 DQG UHTXLUHG 136 1 UHTXLUHG 136 1 UHTXLUHG 3LSH 7HH UHTXLUHG 3LSH URVV QRW DYDLODEOH IRU 136 1 52 Tubing Pre Piped Pilot Supply and ...

Page 23: ...8SSHU LDSKUDJP 3ODWH 6WDLQOHVV VWHHO UHTXLUHG 0 LDSKUDJP 1LWULOH 1 5 OXRURFDUERQ 0 RZHU LDSKUDJP 3ODWH 6WDLQOHVV VWHHO 0 RG 6WHHO 0 2UL FH 2 ULQJ 1LWULOH 1 5 0 OXRURFDUERQ 0 0 18 Lower Cover O ring 2 required 3RO XUHWKDQH 38 0 OXRURFDUERQ 0 0 6HDW 6WHHO 0 1XW 6WHHO 0 RZHU RYHU 6WHHO 0 LVN Polyurethane PU ERAA11220A0 OXRURFDUERQ 0 0 6HDW 6WHHO 0 24 Nameplate 25 Stem O ring 1LWULOH 1 5 0 OXRURFDUERQ...

Page 24: ... RF 5 6 6 8 200 LCC Steel CL150 RF CL300 RF 5 6 1RW DYDLODEOH IRU 6WDQGDUG ERG 1RW DYDLODEOH IRU 7DSSHG QOHW 3LORW 6XSSO ERG Key 1 EZH and EZHSO Series Main Valve Body Part Numbers DESCRIPTION MATERIAL NPS 1 DN 25 NPS 2 DN 50 NPS 3 DN 80 NPS 4 DN 100 NPS 6 8 12 X 6 DN 150 200 300 X 150 EZH and EZHSO Series 1LWULOH 1 5 56 56 56 56 5 7KH DVVHPEOLHV LQFOXGH NH V DQG Table 5 EZH EZHSO Series Travel In...

Page 25: ...KDW WKH PHHW WKH WHPSHUDWXUH UHTXLUHPHQWV L2 L2 L2 L2 L2 L1 L2 L2 L2 S1 S1 S1 L1 L2 L2 L2 L2 L2 L2 L2 4 3 2 1 33 32 34 33 32 31 30 29 28 27 6 26 25 24 23 22 21 10 5 7 8 9 8 62 10 11 44 13 14 4 8 10 9 8 15 16 17 18 19 20 IMPROVED TRAVEL INDICATOR DETAIL VERSION WITHOUT TRAVEL INDICATOR DETAIL NPS 1 THROUGH 3 DN 25 THROUGH 80 FOR NPS 1 DN 25 EZH SERIES VERSION ONLY FOR NPS 3 DN 80 EZH SERIES VERSION...

Page 26: ...Figure 8 EZH Series Main Valve Assembly continued NPS 4 DN 100 0 0 B 43 36 37 37 59 B 43 35 39 36 37 60 59 37 NPS 1 THROUGH 3 DN 25 THROUGH 80 EZH and EZHSO Series ...

Page 27: ...ALANT FOR NUTS AND BOLTS S2 ANAEROBIC METHACRYLATE SEALANT FOR THREADS XEULFDQW DQG VHDODQW PXVW EH VHOHFWHG VXFK WKDW WKH PHHW WKH WHPSHUDWXUH UHTXLUHPHQWV 44 13 14 10 83 35 70 38 73 72 69 77 74 75 15 16 17 18 19 20 21 10 22 23 8 8 9 8 27 3 29 30 31 8 9 8 68 8 8 66 67 64 6 5 63 7 82 61 2 1 10 11 32 33 34 9 8 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L1 L2 L2 L2 S2 S2 S1 S1 NPS 4 DN 100 139 141...

Page 28: ...5 L2 16 17 18 20 L2 21 19 22 23 25 3 27 L2 29 L2 30 34 L2 33 44 138 139 140 141 71 142 145 160 160 143 144 L2 L2 S2 32 30 5 B APPLY LUBRICANT L SEALANT S 1 L2 SILICONE BASED OR PTFE BASED GREASE S2 ANAEROBIC METHACRYLATE SEALANT FOR THREADS S3 GENERAL PURPOSE MEDIUM BOND STRENGTH THREADLOCKER XEULFDQW DQG VHDODQW PXVW EH VHOHFWHG VXFK WKDW WKH PHHW WKH WHPSHUDWXUH UHTXLUHPHQWV FOR NPS 8 DN 200 ONL...

Page 29: ...TXLUHPHQWV L2 L2 L2 L2 L1 L2 L2 L1 L2 L2 L2 L2 L2 L2 L2 L2 L2 S1 4 8 9 8 11 10 62 8 9 8 7 5 4 3 2 1 34 154 30 27 28 29 152 149 150 6 26 25 24 23 22 21 19 18 17 16 15 148 44 146 14 13 20 10 147 155 FOR NPS 1 DN 25 EZHSO SERIES VERSION ONLY IMPROVED TRAVEL INDICATOR DETAIL VERSION WITHOUT TRAVEL INDICATOR DETAIL NPS 1 THROUGH 3 DN 25 THROUGH 80 FOR NPS 1 DN 25 EZH SERIES VERSION ONLY FOR NPS 3 DN 80...

Page 30: ...C METHACRYLATE SEALANT FOR THREADS XEULFDQW DQG VHDODQW PXVW EH VHOHFWHG VXFK WKDW WKH PHHW WKH WHPSHUDWXUH UHTXLUHPHQWV L2 44 14 83 10 35 146 151 193 70 153 147 156 69 77 74 75 15 16 17 18 19 20 21 10 22 23 8 9 8 8 9 8 27 3 148 11 10 157 158 157 8 8 64 6 5 63 7 13 150 149 61 152 2 1 34 30 154 29 67 66 68 L2 L2 L2 S2 L2 L2 L2 L2 S2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 NPS 4 DN 100 139 141 ...

Page 31: ...L2 10 69 83 75 138 44 144 194 194 142 145 141 143 139 71 140 S2 L2 L2 L2 L2 NPS 6 8 12 X 6 DN 150 200 300 X 150 Figure 9 EZHSO Series Main Valve Assembly continued 5 B APPLY LUBRICANT L SEALANT S 1 L2 SILICONE BASED OR PTFE BASED GREASE S2 ANAEROBIC METHACRYLATE SEALANT FOR THREADS XEULFDQW DQG VHDODQW PXVW EH VHOHFWHG VXFK WKDW WKH PHHW WKH WHPSHUDWXUH UHTXLUHPHQWV FOR NPS 8 DN 200 ONLY 31 EZH an...

Page 32: ... B Figure 10 EZH Series Single Pilot Mounting Assembly NPS 1 THROUGH 3 DN 25 THROUGH 80 48 46 47 47 52 51 49 159 L PORT B PORT TYPE PRX 120 AP TYPE SA 2 BACK CHECK VALVE VIEW A A 32 EZH and EZHSO Series ...

Page 33: ...Single Pilot Mounting Assembly continued NPS 4 6 12 X 6 AND 8 DN 100 150 300 X 150 AND 200 46 50 47 49 52 49 51 159 48 47 EZH SERIES NPS 4 DN 100 L PORT TYPE PRX 120 AP BACK CHECK VALVE TYPE SA 2 B PORT 33 EZH and EZHSO Series ...

Page 34: ... 11 EZH Series Working Monitor Pilot Mounting Assembly NPS 1 THROUGH 3 DN 25 THROUGH 80 54 50 49 52 48 49 159 46 47 48 47 L PORT B PORT TYPE SA 2 TYPE PRX 120 AP VIEW A A BACK CHECK VALVE 34 EZH and EZHSO Series ...

Page 35: ...itor Pilot Mounting Assembly continued NPS 4 6 12 X 6 AND 8 DN 100 150 300 X 150 AND 200 46 159 56 47 49 159 48 47 48 49 54 50 52 EZH SERIES NPS 4 DN 100 BACK CHECK VALVE BACK CHECK VALVE TYPE PRX 120 AP TYPE SA 2 35 EZH and EZHSO Series ...

Page 36: ...Figure 12 EZHSO Series Single Pilot Mounting Assembly NPS 1 THROUGH 3 DN 25 THROUGH 80 B 46 47 51 48 49 50 52 49 159 L PORT A PORT B PORT TYPE SA 2 TYPE PRX 120 BACK CHECK VALVE EZH and EZHSO Series ...

Page 37: ...es Single Pilot Mounting Assembly continued NPS 4 6 12 X 6 AND 8 DN 100 150 300 X 150 AND 200 B 46 50 47 48 49 49 52 159 EZH SERIES NPS 4 DN 100 L PORT TYPE PRX 120 AP TYPE SA 2 B PORT BACK CHECK VALVE EZH and EZHSO Series ...

Page 38: ...AP Figure 13 PRX Series Pilot Assemblies S BLEED PORT B SUPPLY PORT L LOADING PORT A SENSING PORT D DAMPER R RESTRICTOR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 14 18 19 13 11 20 10 11 21 22 23 24 18 11 26 25 4 35 4 R 32 28 30 31 30 29 28 27 L S B D 28 S L 34 31 30 D 29 B 28 27 33 38 EZH and EZHSO Series ...

Page 39: ...ype SA 2 Pilot Supply Filter Assemblies 0 H H 1 2 3 4 5 6 7 8 9 10 11 12 13 M 14 15 16 17 R 18 V 19 20 21 A A OUTLET PORT INLET PORT SENSING PORT HOT WATER INLET OUTLET HOT WATER INLET OUTLET EZH and EZHSO Series ...

Page 40: ...s warranties or guarantees express or implied regarding the products or services described herein or their use or applicability All sales are governed by our terms and conditions which are available on request We reserve the right to modify or improve the GHVLJQV RU VSHFL FDWLRQV RI RXU SURGXFWV DW DQ WLPH ZLWKRXW QRWLFH Emerson Process Management Regulator Technologies Inc does not assume respons...

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