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Fisher NPS 12, Instruction Manual

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Fisher NPS 12 Instruction Manual Download Page 16

Instruction Manual

D103553X012

Large ET and ED Valves

July 2014

16

Figure 5. Typical Fisher ET Valve

VIEW A

VALVE PLUG SEAL RING

CAGE

(KEY 3)

VALVE

PLUG

(KEY 2)

SEAL

RING

(KEY 28)

A

NOTE:

SEAL RING OPENING MUST FACE SEAT RING FOR FLOW DOWN APPLICATIONS AND MUST FACE ACTUATOR FOR FLOW UP APPLICATIONS.

1

Summary of Contents for NPS 12

Page 1: ...isher NPS 12 Valve with Piston Actuator and FIELDVUE DVC6200 Digital Valve Controller X0237 1 Introduction Scope of Manual This instruction manual includes installation and maintenance information for...

Page 2: ...ges J Linear or J equal percentage WhisperFlot Whisper Trimt III and Cavitrol III Cages Linear Flow Direction Standard and Cavitrol III Cages Down WhisperFlo and Whisper Trim III Cages Up Port Diamete...

Page 3: ...limitations should not be exceeded Description Fisher NPS 12 through 16 and NPS 30 CL150 through CL600 ET and ED control valves are used for either throttling or on off control of a wide variety of li...

Page 4: ...ting application also refer to the WARNING at the beginning of the Maintenance section in this instruction manual CAUTION The valve configuration and construction materials were selected to meet parti...

Page 5: ...anagement sales office for additional information 5 With a leak off bonnet construction remove the 1 4 NPT pipe plugs key 14 figure 4 from the bonnet to hook up the leak off piping 6 If continuous ope...

Page 6: ...ving the packing hardware or packing rings or when loosening the packing box pipe plug D Check with your process or safety engineer for any additional measures that must be taken to protect against pr...

Page 7: ...stopped in this manner proceed to the Replacing Packing section If there is undesirable packing leakage with other than spring loaded packing first try to limit the leakage and establish a stem seal b...

Page 8: ...ER WIPER KEY 12 UPPER WIPER KEY 12 UPPER WIPER KEY 12 UPPER WIPER KEY 12 PACKING FOLLOWER KEY 13 PACKING FOLLOWER KEY 13 PACKING FOLLOWER KEY 13 PACKING FOLLOWER KEY 13 WASHER KEY 10 SPRING KEY 8 PACK...

Page 9: ...mbly from dropping out of the bonnet WARNING 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...

Page 10: ...h NSm LbfSft NSm LbfSft NSm LbfSft NSm LbfSft 31 8 1 1 4 CL150 300 CL600 33 45 24 3 33 2 49 67 36 1 49 4 16 21 11 8 15 5 25 33 18 4 24 3 50 8 2 CL300 43 32 65 48 20 15 31 23 CL600 61 45 91 67 27 20 41...

Page 11: ...bolting procedures in step 15 include but are not limited to ensuring that bolting threads are clean and evenly tightening the hex nuts onto the studs in a crisscross pattern Because of the boltup cha...

Page 12: ...s in this section are shown in figure 6 for ET valves and in figure 5 for ED valves 1 Isolate the control valve from the line pressure release pressure from both sides of the valve body and drain the...

Page 13: ...em with nuts Rotate the handle alternately in each direction to lap the seats After lapping remove the bonnet and clean the seat surfaces Completely assemble the valve as described in the Trim Replace...

Page 14: ...o lock the assembly Trim Replacement Except where indicated key numbers are shown in figure 5 and 6 1 Proceed as appropriate For ET valves Insert cap screws in the two 3 8 inch tapped holes in the bot...

Page 15: ...ate the outside diameter of the seat ring seal ring with lithium grease 3 Slide the valve plug key 2 and stem assembly into the cage For valves with a seal ring make sure the valve plug seal ring key...

Page 16: ...Valves July 2014 16 Figure 5 Typical Fisher ET Valve VIEW A VALVE PLUG SEAL RING CAGE KEY 3 VALVE PLUG KEY 2 SEAL RING KEY 28 A NOTE SEAL RING OPENING MUST FACE SEAT RING FOR FLOW DOWN APPLICATIONS AN...

Page 17: ...Instruction Manual D103553X012 Large ET and ED Valves July 2014 17 Figure 6 Typical Fisher ED Valve B2411 APPLY LUB VIEW A VALVE PLUG PISTON RINGS CAGE KEY 3 VALVE PLUG KEY 2 PISTON RINGS KEY 28 A...

Page 18: ...r ET Valve with HTS1 Option FLOW UP PEEK ANTI EXTRUSION RINGS FLOW DOWN 21B2120 A A6137 IL 2 27 29 28 2 27 29 28 219 219 VIEW A VALVE PLUG SEAL RING WITH HTS1 OPTION A B 9 9 6 6 226 226 225 225 227 22...

Page 19: ...mbling the individual parts and during installation in the valve body 1 Apply a suitable high temperature lubricant to the inside diameter of the Bore Seal plug seal Also lubricate the outside diamete...

Page 20: ...to step 7 6 Remove the retainer 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 app...

Page 21: ...ll actuator force applied and the valve plug fully seated align the actuator travel indicator scale with the lower end of valve travel Refer to the appropriate actuator instruction manual for informat...

Page 22: ...eal makes contact with the valve plug figure 11 8 Inspect the lower seating surface where the valve plug contacts the seat ring for wear or damage which would prevent proper operation of the valve Als...

Page 23: ...he valve D The open interior of the Bore Seal plug seal must face up in a valve with flow up construction figure 8 D The open interior of the Bore Seal plug seal must face down in a valve with flow do...

Page 24: ...anent set With full actuator force applied and the valve plug fully seated align the actuator travel indicator scale with the lower end of valve travel Refer to the appropriate actuator instruction ma...

Page 25: ...ng ET valve only 49 Cap Screw ED valve only 219 PEEK Anti extrusion ring ET HTS1 option valve only Bonnet 1 Valve Bonnet 3 Packing Box Flange 4 Packing Flange Stud 2 req d 5 Packing Flange Nut 2 req d...

Page 26: ...Instruction Manual D103553X012 Large ET and ED Valves July 2014 26 Figure 12 Typical Fisher WhisperFlo Trims ED ET CAP SCREW SEAT RING WhisperFlo CAGE CAGE RETAINER BONNET...

Page 27: ...Instruction Manual D103553X012 Large ET and ED Valves July 2014 27...

Page 28: ...request We reserve the right to modify or improve the designs or specifications of such products at any time without notice E 2011 2014 Fisher Controls International LLC All rights reserved Fisher FI...

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