Emerson Fisher EZH Series Instruction Manual Download Page 14

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Type EZH Relief or Backpressure Regulator

12. Place washers (key 11) and uniformly tighten the

machine screws (key 10) to hold the body (key 24) and

spring case (key 8) together.

13. Install spring (key 7) and upper spring seat (key 6) on

top of the lower spring seat (key 9) inside the spring

case (key 8). Install Cap (key 3).

14. Screw in adjusting screw (key 1) at desired spring

compression and use the lock nut (key 2) to lock the

adjusting screws position.

Parts Ordering

Each Type EZH relief valve or backpressure regulator

is assigned a serial number, which can be found on the

nameplate. Refer to the serial number when contacting

your local Sales Office for technical information or when

ordering parts.
When ordering replacement parts, reference the key

number of each needed part as found in the following parts

list. Separate kit containing all recommended spare parts

is available.

Parts Lists

Type EZH Main Valve (Figure 4)

Key Description

Part Number

Type EZH

Disk Parts Kits

(NPS 1, 2, and 3 / DN 25, 50, and 80

include keys 29, 30, 32, 33, 34, and 62;

NPS 4 / DN 100 include keys 29, 30,

32, 33, 69, 71, and 75)

NPS 1 / DN 25

Nitrile (NBR) and Fluorocarbon (FKM)

REZH1X00N12

Fluorocarbon (FKM) REZH1X00F12

NPS 2 / DN 50

Nitrile (NBR) and Fluorocarbon (FKM)

REZH2X00N12

Fluorocarbon (FKM) REZH2X00F12

NPS 3 / DN 80

Nitrile (NBR) and Fluorocarbon (FKM) REZH3X00N12

Fluorocarbon (FKM)

REZH3X00F12

NPS 4 / DN 100

Nitrile (NBR) and Fluorocarbon (FKM)

REZH4X00N12

Fluorocarbon (FKM)

REZH4X00F12

Type EZH

Full Repair Kits

(NPS 1, 2, and 3 / DN 25, 50, and 80 include

keys 4, 7, 8, 9, 15,17, 20, 28, 29, 30, 32,

33, 34, 62, 142B, and 143; NPS 4 / DN 100

includes keys 8, 9, 15, 17, 20, 29, 30, 32,

33, 34, 63, 64, 67, 69, 71, 75, 142B, and 143)

Key Description

Part Number

Type EZH

NPS 1 / DN 25

Nitrile (NBR) and Fluorocarbon (FKM)

REZH1X00N22

Fluorocarbon (FKM)

REZH1X00F22

NPS 2 / DN 50

Nitrile (NBR) and Fluorocarbon (FKM)

REZH2X00N22

Fluorocarbon (FKM)

REZH2X00F22

NPS 3 / DN 80

Nitrile (NBR) and Fluorocarbon (FKM)

REZH3X00N22

Fluorocarbon (FKM)

REZH3X00F22

NPS 4 / DN 100

Nitrile (NBR) and Fluorocarbon (FKM)

REZH4X00N22

Fluorocarbon (FKM)

REZH4X00F22

Body

See Following Table

Seat Ring

NPS 1 / DN 25 Body

For 100% Capacity

GD29726X012

For 80% Capacity

M0300940X12

For 50% Capacity

M0300910X12

For 30% Capacity

M0300710X12

NPS 2 / DN 50 Body

For 100% Capacity

GD29581X012

For 80% Capacity

M0300950X12

For 50% Capacity

M0300920X12

For 30% Capacity

M0300720X12

NPS 3 / DN 80 Body

For 100% Capacity

GD29732X012

For 80% Capacity

M0300960X12

For 50% Capacity

M0300930X12

For 30% Capacity

M0300730X12

NPS 4 / DN 100 Body

For 100% Capacity

M0303250X12

For 80% Capacity

M0303430X12

For 50% Capacity

M0303420X12

For 30% Capacity

M0303410X12

(1)

Cage

NPS 1 / DN 25

GE31405X012

NPS 2 / DN 50

GE37679X012

NPS 3 / DN 80

GE38018X012

4* Anti-Friction Ring (2 required)

GD27409X012

NPS 1, 2, and 3 / DN 25, 50, and 80 Only

Actuator Lower Casing

NPS 1 / DN 25 Body

GD29697X012

NPS 2 / DN 50 Body

GD29583X012

NPS 3 / DN 80 Body

GE44397X012

NPS 4 / DN 100 Body

M0300770X12

Cap Screws

NPS 1 / DN 25 Body (4 required)

GD89878X012

NPS 2 / DN 50 Body (8 required)

GE11386X012

NPS 3 / DN 80 Body (8 required)

GE11387X012

NPS 4 / DN 100 Body (8 required)

M4691020X12

*Recommended Spare Part

1. When retrofitting a Type EZH with pins with the new cage, it’s also necessary to order the

Seat Ring.

Summary of Contents for Fisher EZH Series

Page 1: ... qualified person must install or service the relief valve or backpressure regulator Introduction Scope of the Manual This manual provides installation startup and maintenance instructions and parts ordering information for theType EZH relief valve or backpressure regulator and PRX Series pilots Information on other equipment used with this product is found in separate manuals Product Description ...

Page 2: ...l Pressure 1 Main Valve 1500 psid 103 bar d Pilot Between loading pressure in pilot and loading sense pressure 1233 psid 85 0 bar d Outlet Pressure Ranges See Table 2 Minimum Differential Pressures 1 TYPE MAIN VALVE BODY SIZE MINIMUM DIFFERENTIAL For 90 Capacity For 100 Capacity NPS DN psid bar d psid bar d EZH 1 25 15 2 1 1 15 7 1 1 2 50 12 0 0 83 13 8 0 95 3 80 10 6 0 73 12 8 0 88 4 100 15 8 1 1...

Page 3: ...e set pressure the pilot control spring closes the pilot valve plug and the exhaust to atmosphere stops Force from the main spring along with pilot loading pressure pushes the diaphragm and plug assembly onto the knife edged seat producing tight shutoff Backpressure Regulator As long as inlet pressure remains below setpoint the pilot control spring keeps the pilot valve plug closed Inlet pressure ...

Page 4: ...e protected If the exhaust is to be piped to the main valve exhaust or remotely vented remove the vent assembly and install tubing or piping into the 1 4 NPT pilot exhaust connection Protect the open end of the exhaust pipe by installing a screened vent cap Type EZH Type EZH Single Pilot Relief Valve or Backpressure Regulator Type EZH Adjustment The adjustment of setpoint Figure 7 is performed by ...

Page 5: ...needed If the pilot is not piped downstream make sure the pilot exhaust is pointed in the correct direction Shutdown 1 Close upstream block valve first and then close the downstream block valve 2 Open downstream and upstream vent valves not shown Type PRX 182 Pilot Adjustment For PRX Series pilots Figure 7 loosen locknut key 2 and turn the adjusting screw into the spring case to increase or out of...

Page 6: ...ring for damage or wear and replace if necessary Lubricate O ring before placing inside the cap key 70 5 Remove special screws key 68 from sleeve key 14 6 Fit eye bolt key 35 into the upper spring seat key 73 threaded hole 7 Carefully remove the trim system from the sleeve guide key 61 using the eye bolts key 35 8 Remove socket head cap screws key 33 and lock washers key 32 9 Lift off the disk ret...

Page 7: ...1 L2 L2 L2 S1 S1 S1 L1 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 4 3 2 1 6 38 35 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 ONLY 140 S2 TOP VIEW 160 143 138 139 140...

Page 8: ...t travel indicator is aligned on the cap and on the upper actuator casing 21 Mount O ring key 75 on the space between the cap key 70 and the upper actuator casing key 11 22 Screw the eye bolts key 35 on the cap key 70 NPS 1 through 3 DN 25 through 80 Intermediate Flange O ring Maintenance for Type EZH 1 Remove nuts key 26 2 Carefully lift the upper actuator casing and lower actuator casing assembl...

Page 9: ...he disk holder key 30 and disk retainer key 31 on the sleeve adaptor key 27 Insert the spring lock washers key 32 and hex socket cap screws key 33 and tighten See Torque Specifications Table 3 for proper torque values 10 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 ...

Page 10: ...2 L2 L2 L2 L2 L2 L2 L1 L2 L2 L2 S2 S2 S1 S1 NPS 4 DN 100 139 141 145 143 144 138 160 140 L2 142B L2 S2 71 192 TRAVEL INDICATOR DETAIL VERSION WITHOUT TRAVEL INDICATOR DETAIL MLM1945_B APPLY LUBRICANT L SEALANT S 1 L1 LITHIUM HYDROXYSTEGRATE NLGI 2 GRADE GREASE L2 SILICONE BASED GREASE S1 ANAEROBIC METHACRYLATE SEALANT FOR NUTS AND BOLTS S2 ANAEROBIC METHACRYLATE SEALANT FOR THREADS 1 Lubricant and...

Page 11: ...lace into the body 9 Place seat ring key 2 on top of O ring key 34 in body with the curved side down and seat edge up 10 Place cage key 78 on the top of seat ring key 2 11 Place lower casing key 5 on top of the body Replace washer key 67 and tighten cap screws key 6 Screw sleeve guide key 61 into lower casing key 5 utilizing cap key 70 12 Lubricate the sleeve key 14 in the upper plate contact area...

Page 12: ...5 on the cap key 70 21 Screw the eye bolts key 35 on the cap key 70 22 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 Type EZH Travel Indicator Maintenance A new and improved travel indicator has been phased in during 2013 The new version improves...

Page 13: ...and press it down into the body key 16 6 Lightly lubricate the rims of the diaphragm key 14 and place it on top of the lower diaphragm plate key 15 Set the diaphragm plate key 13 on the diaphragm key 14 7 Lightly lubricate the O ring key 18 and place it in the lower cover key 21 8 Place the washer key 11 and stem nut key 20 on the stem key 23 and tighten If also performing Upper Case Maintenance s...

Page 14: ... keys 4 7 8 9 15 17 20 28 29 30 32 33 34 62 142B and 143 NPS 4 DN 100 includes keys 8 9 15 17 20 29 30 32 33 34 63 64 67 69 71 75 142B and 143 Key Description Part Number Type EZH NPS 1 DN 25 Nitrile NBR and Fluorocarbon FKM REZH1X00N22 Fluorocarbon FKM REZH1X00F22 NPS 2 DN 50 Nitrile NBR and Fluorocarbon FKM REZH2X00N22 Fluorocarbon FKM REZH2X00F22 NPS 3 DN 80 Nitrile NBR and Fluorocarbon FKM REZ...

Page 15: ...80X012 SCH 80 BWE GE10681X012 PN 16 40 GE12898X012 1 3 80 Cast iron CL125 FF GE10689X012 CL250 RF GE10698X012 WCC Steel CL150 RF GE10699X012 14B5835X032 CL300 RF GE10700X012 14B5835X042 CL600 RF GE10701X012 14B5835X052 SCH 40 BWE GE10702X012 SCH 80 BWE GE10703X012 PN 25 40 GE13594X012 1 4 2 100 Cast iron CL125 FF GE10707X012 CL250 RF GE10822X012 WCC Steel CL150 RF GE10835X012 14B5836X032 CL300 RF ...

Page 16: ... See sleeve subassembly table if it needs to be replaced Type EZH Main Valve continued 22 Plain Washer NPS 1 DN 25 Body 16 required 1A518925072 NPS 2 DN 50 Body 16 required 1A3517K0012 NPS 3 DN 80 Body 16 required 1A519828992 NPS 4 DN 100 Body 16 required M5001015X12 23 Hex Nut NPS 1 DN 25 Body 16 required 1A341224122 NPS 2 DN 50 Body 16 required 1A343324122 NPS 3 DN 80 Body 16 required ERCA01576A...

Page 17: ...Type EZH Relief or Backpressure Regulator 17 46 45 49 47 49 49 49 49 51 48 52 Figure 6 Type EZH Mounting Assembly S PORT ...

Page 18: ...uide NPS 4 DN 100 Body Only M0300360X12 62 O ring NPS 1 2 and 3 DN 25 50 and 80 Bodies Only M6020082X12 63 O ring M6020172X12 64 O ring M6020139X12 Recommended Spare Part 1 When retrofitting a Type EZH with pins with the new cage it s also necessary to order the Seat Ring 3 Included also in sleeve subassembly Type EZH Main Valve continued 66 Socket Head Set Screw NPS 4 DN 100 Body Only 8 required ...

Page 19: ...s 1L3719X0012 52 Tubing 0500213809W Recommended Spare Part PRX Series Pilot Parts List Key Description Part Number Parts Kits includes keys 4 5 14 17 18 25 and 28 Type PRX 182 Nitrile NBR RPRX00X0N12 Fluorocarbon FKM RPRX00X0F12 1 Adjusting Screw GD25334X012 2 Locknut GD03600X012 3 Cap GD25335X012 4 Spring Case O ring Nitrile NBR GD01017X012 Fluorocarbon FKM GD01017X022 5 O ring Nitrile NBR GD0100...

Page 20: ...2 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Singapore 128461 Singapore Tel 65 6770 8337 Europe Bologna 40013 Italy Tel 39 051 419 0611 Chartres 28008 France Tel 33 2 37 33 47 00 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 Pacif...

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