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Fisher EHD series, Instruction Manual, Page: 6 / 32

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Instruction Manual

D100392X012

EH Valves NPS 8 through 14

June 2017

6

8.  After all maintenance is complete, refer to the Trim Replacement procedure to assemble the valve body.

Note

If the valve has ENVIRO‐SEAL™ live‐loaded packing installed, see the Fisher instruction manual titled ENVIRO‐SEAL Packing System
for Sliding‐Stem Valves (

D101642X012

) for packing instructions.

If the valve has HIGH‐SEAL live‐loaded packing installed, see the Fisher instruction manual titled HIGH‐SEAL Live‐Loaded Packing
System (

D101453X012

) for instructions.

Figure 2. Lubricator and Lubricator/Isolating Valve

LUBRICATOR

LUBRICATOR/ISOLATING VALVE

10A9421‐A
AJ5428‐D
A0832‐2

14

14

27

Packing Lubrication

  WARNING

To avoid personal injury or property damage resulting from fire or explosion, do not lubricate packing used in oxygen
service or in processes with temperatures over 260

_

C (500

_

F).

CAUTION

Do not lubricate graphite packing. Graphite packing is self-lubricated. Additional lubrication may result in slip-stick
movement of the valve.

Note

ENVIRO‐SEAL or HIGH‐SEAL packing does not require lubrication.

Summary of Contents for EHD series

Page 1: ... Assembly 25 Valve Assembly 26 Figure 1 Fisher EH Series Control Valve with 667 Actuator W2992 1 Introduction Scope of Manual This instruction manual includes installation maintenance and parts ordering information for NPS 8 through 14 Fisher EHD and EHT sliding stem globe style control valves Refer to separate manuals for instructions covering the actuator positioner and accessories Do not instal...

Page 2: ... Valves using an equal percentage cage may be travelled an additional 13 mm 0 5 inch if desired to obtain additional capacity flow characteristic becomes modified equal percentage Table 2 Shutoff Classifications 1 Valve Design ANSI FCI LEAKAGE CLASS EHD III Standard IV Optional EHT IV Standard V Optional EHT w PEEK 2 Anti Extrusion Rings V to 316_C 600_F 1 Per ANSI FCI 70 2 and IEC 60534 4 2 Poly ...

Page 3: ...nal Bore seal trim Table 4 Approximate Weights Valve Body and Bonnet Assemblies VALVE SIZE NPS WEIGHTS CL1500 CL2500 Buttwelding Ends Flanged Buttwelding Ends Flanged Kilograms Pounds Kilograms Pounds Kilograms Pounds Kilograms Pounds 8 1400 3100 1700 3700 1900 4100 2200 4700 10 1500 3300 1900 4100 2000 4400 12 3400 7300 3900 8600 3400 7600 14 3400 7300 3400 7600 Installation WARNING Always wear p...

Page 4: ...s is especially important if the pipeline cannot be thoroughly cleaned or if the flowing medium is not clean 3 Install the control valve with the valve body in a horizontal pipeline and the actuator vertical above the valve Other orientations may result in shortened trim life and difficulty with field maintenance Flow through the valve body must be in the direction indicated by the flow arrow key ...

Page 5: ...pressure electric power or a control signal to the actuator Be sure the actuator cannot suddenly open or close the valve D Use bypass valves or completely shut off the process to isolate the valve from process pressure Relieve process pressure on both sides of the valve Drain the process media from both sides of the valve D Vent the power actuator loading pressure and relieve any actuator spring p...

Page 6: ...r instruction manual titled HIGH SEAL Live Loaded Packing System D101453X012 for instructions Figure 2 Lubricator and Lubricator Isolating Valve LUBRICATOR LUBRICATOR ISOLATING VALVE 10A9421 A AJ5428 D A0832 2 14 14 27 Packing Lubrication WARNING To avoid personal injury or property damage resulting from fire or explosion do not lubricate packing used in oxygen service or in processes with tempera...

Page 7: ... 4 the spring maintains a sealing force on the packing If leakage is noted around the packing follower key 13 figure 11 check to be sure the shoulder on the packing follower is touching the bonnet key 1 figure 11 If the shoulder is not touching the bonnet tighten the packing flange nuts key 5 figure 11 until the shoulder on the packing follower is against the bonnet If the packing leakage is still...

Page 8: ...vement of the bonnet To avoid personal injury or property damage caused by uncontrolled movement of the bonnet loosen the bonnet by following the instructions in the next step Figure 3 Actuator Mounting ANTI ROTATION GROOVE TRAVEL INDICATOR STEM CONNECTOR POINTER STEM LOCKNUTS MOUNTING STUDS NUTS STEM CONNECTOR CAP SCREWS 15A4691 A A2359 2 Note The following step also provides additional assurance...

Page 9: ...valve body install eyebolts or similar devices into the 1 2 inch 13 UNC tapped holes in the top of the cage Using the eyebolts carefully lift the cage out of the valve body Remove the top and bottom cage gaskets key 11 figure 12 or 14 Carefully remove any residual silver or tin from the gasket surfaces 7 Cover the opening in the valve body to protect the gasket surface and to prevent foreign mater...

Page 10: ...APHITE FILAMENT PACKING RING KEY 9 LANTERN RING KEY 8 PACKING BOX RING KEY 11 3 PACKING FOLLOWER KEY 13 PACKING RING KEY 7 LANTERN RING KEY 8 PACKING BOX RING KEY 11 12A7839 A Sht 1 14A3414 B 12A8163 A PTFE V RING DOUBLE PACKING GRAPHITE LAMINATE AND FILAMENT DOUBLE PACKING PTFE COMPOSITION DOUBLE PACKING UPPER WIPER KEY 12 PACKING FOLLOWER KEY 13 PACKING RING KEY 7 LANTERN RING KEY 8 PACKING BOX ...

Page 11: ...neering and or listed on the serial card provided with this product Use of unapproved materials and parts could lead to stresses exceeding the design or code limits intended for this particular service Install studs with the material grade and manufacturer s identification mark visible Contact your Emerson sales office or Local Business Partner immediately if a discrepancy between actual parts and...

Page 12: ...5 47 35 16 Mount the actuator on the valve body assembly and reconnect the actuator and valve plug stem according to the Actuator Mounting procedure After the control valve is returned to service retighten the hex nuts key 14 figure 12 or 14 to the torque recommended in table 6 Trim Removal WARNING Refer to the WARNING at the beginning of the Maintenance section in this instruction manual For Bore...

Page 13: ... Piston ring and seal ring installation instructions and valve body to bonnet reassembly instructions are presented in the Trim Replacement procedure Lapping Seats Key numbers referenced in this procedure are shown in figure 12 for the EHD valve and in figure 14 for the EHT valve A certain amount of leakage should be expected with metal to metal seating in any valve If the leakage becomes excessiv...

Page 14: ...ghtened to the torque value specified in table 7 Repeat the final torque and if any cap screw still turns tighten every cap screw again 2 Install one of the cage gaskets key 11 between the valve body and cage key 2 and install the cage 3 If the cage used has multiple sizes of windows attempt to orient the largest window toward the valve body web a shelf like projection of the casting into the flow...

Page 15: ...cant key 24 Secure the bonnet with hex nuts key 14 and washers key 29 Torque the nuts in a crisscross pattern to no more than 1 4 of the nominal torque value specified in table 6 When all nuts are tightened to that torque value increase the torque by 1 4 of the specified torque value and repeat the crisscross pattern Repeat this procedure until all nuts are tightened to the specified nominal value...

Page 16: ...0392X012 EH Valves NPS 8 through 14 June 2017 16 Figure 5 Fisher EHD with Bore Seal Trim FLOW DOWN FLOW UP PLUG RETAINER BORE SEAL PISTON RING CAGE RETAINER CAGE BORE SEAL PLUG SEATING AREA PISTON RING SEATING AREA A VIEW A ...

Page 17: ...the Bore Seal plug seal must face down in a valve with flow down construction figure 5 3 Place the Bore Seal plug seal over the top of the valve plug The retainer will help guide the Bore Seal down onto the plug figure 5 Do not force the Bore Seal over the plug For flow down constructions skip to step 5 4 An installation tool see table 8 must be inserted into the Bore Seal prior to using the retai...

Page 18: ...m Never reuse an old valve stem with a new plug or reinstall a valve stem after it has been removed Replacing a valve stem requires drilling a new pin hole in the stem This drilling weakens the stem and may cause failure in service However a used valve plug may be reused with a new valve stem 11 Remove the existing valve stem and plug cage and seat ring from the valve body following the appropriat...

Page 19: ...id scratching any sealing surface CAUTION Do not remove the valve stem from the plug retainer assembly unless you are planning to replace the valve stem Never reuse an old valve stem with a new plug or reinstall a valve stem after it has been removed Replacing a valve stem requires drilling a new pin hole in the stem This drilling weakens the stem and may cause failure in service However a used va...

Page 20: ...where the Bore Seal plug seal makes contact with the plug figure 9 9 Replace or repair trim parts according to the following procedure for lapping metal seats remachining metal seats or other valve plug maintenance procedures as appropriate Lapping Metal Seats Bore Seal Constructions Before installing a new Bore Seal plug seal lap the lower seating surface valve plug to seat ring figure 9 followin...

Page 21: ...er and then the installation tool Place the Bore Seal retainer back onto the plug and tighten the retainer using an appropriate tool such as a strap wrench 7 Using an appropriate tool such as a center punch stake the threads on top of the plug in one place figure 7 to secure the Bore Seal retainer 8 Replace the piston ring s following instructions in the Trim Replacement section of this manual 9 R...

Page 22: ...vel indicator should show the valve to be wide open If it does not loosen the screws that hold the travel indicator scale and shift the scale to the required position 8 Stroke the valve to the closed position The travel indicator should show the valve to be closed 9 If travel is not correct lift the valve plug assembly key 3 figure 12 or 14 off its seat approximately 6 4 mm 1 4 inch and screw the ...

Page 23: ...ications may adversely alter the performance of the packing kit Stem Diameter mm Inches Yoke Boss Diameter mm Inches Kits Packing Material Double PTFE Graphite ULF Duplex 31 8 1 1 4 127 5 5H RPACKXRT052 RPACKXRT302 RPACKXRT252 ENVIRO SEAL Packing Repair Kits Repair kits include parts to replace the soft packing materials in valves that already have ENVIRO SEAL packing arrangements installed or in ...

Page 24: ...ing 39B4153 A A6297 1 Typical HIGH SEAL ULF Packing System Typical ENVIRO SEAL Packing System with PTFE Packing Typical ENVIRO SEAL Packing System with Graphite ULF Packing Typical ENVIRO SEAL Packing System with Duplex Packing 200 212 201 215 216 207 209 211 217 207 207 207 214 213 A6722 39B4612 A ...

Page 25: ...m 5 inch yoke boss diameter 2 req d 178 mm 7 inch yoke boss diameter 3 req d 5 Packing Flange Nut 127 mm 5 inch yoke boss diameter 2 req d 178 mm 7 inch yoke boss diameter 3 req d 6 Packing Set 7 Packing Ring Key Description 8 Spring or Lantern Ring 9 Packing Ring 10 Washer 11 Packing Box Ring 12 Upper Wiper felt 13 Packing Follower 316 stainless steel 14 Pipe Plug not shown Steel 316 stainless st...

Page 26: ...0 NPS 12 and 14 valves CL1500 CL2500 For valve with Whisper Trim III cage NPS 8 and 10 valves CL1500 CL2500 NPS 12 and 14 valves CL1500 CL2500 Key Description 9 Backup Ring for use only with EHT valve For valve with other than Whisper Trim III cage NPS 8 and 10 valves CL1500 316 stainless steel 416 stainless steel CL2500 316 stainless steel 416 stainless steel NPS 12 and 14 valves CL1500 316 stain...

Page 27: ...TION FOR ALL TRIMS EXCEPT THOSE WITH WHISPER TRIM III CAGES O RING CONSTRUCTION GASKET CONSTRUCTION VIEW A APPLY LUBRICANT 59A9171 A COMPLETE VALVE SHOWING VALVE PLUG WITHOUT DIVERTER CONE DIVERTER CONE DETAIL WHISPER TRIM LEVEL A B OR C DETAIL WHISPER TRIM LEVEL D DETAIL 59A9172 A C0632 1 59A9180 A 59A9182 A ...

Page 28: ...Instruction Manual D100392X012 EH Valves NPS 8 through 14 June 2017 28 Figure 13 Belleville Washer Body to Bonnet Bolting GE60624 C BONNET SHOWN IN UNCOMPRESSED FREE POSITION ...

Page 29: ... FOR ALL TRIMS EXCEPT THOSE WITH WHISPER TRIM III CAGES O RING CONSTRUCTION GASKET CONSTRUCTION VIEW A APPLY LUBRICANT 59A9177 A COMPLETE VALVE SHOWING VALVE PLUG WITHOUT DIVERTER CONE DIVERTER CONE DETAIL WHISPER TRIM LEVEL A B OR C DETAIL WHISPER TRIM LEVEL D DETAIL 59A9184 A 59A9186 A 59A9178 A C0633 1 VIEW B ...

Page 30: ...Ethylene propylene Fluorocarbon NPS 12 and 14 valves CL1500 Nitrile Ethylene propylene Fluorocarbon CL2500 Nitrile Ethylene propylene Fluorocarbon 13 Bonnet Stud 12 required Figure 15 Fisher EHT Valve Using PEEK Anti Extrusion Rings FLOW UP FLOW DOWN A7220 Key Description 14 Hex Nut 12 req d 15 Flow Arrow stainless steel 16 Drive Screw stainless steel 2 req d 17 Nameplate stainless steel 18 Drive ...

Page 31: ...74 476 585C 657 1008 667 MO 667 4 MO Group 407 127 mm 5 Inch Yoke Boss 474 585C 657 Group 408 127 mm 5H and 178 mm 7 Inch Yoke Boss 657 Size 100 1008 Group 101 127 mm 5 Inch Yoke Boss Group 409 127 mm 5H and 178 mm 7 Inch Yoke Boss 667 667 Size 100 Group 404 127 mm 5 Inch Yoke Boss Group 802 127 mm 5 Inch Yoke Boss 667 667 4 Group 405 127 mm 5 Inch Yoke Boss 585C 657 MO 657 4 MO ...

Page 32: ...able upon request We reserve the right to modify or improve the designs or specifications of such products at any time without notice E 1979 2017 Fisher Controls International LLC All rights reserved Fisher Whisper Trim Cavitrol and ENVIRO SEAL are marks owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co Emerson Automation Solutions Emerson and t...

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