Fisher NPS 12 Instruction Manual
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Fisher NPS 12 Instruction Manual

Large et and ed valves
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Instruction Manual
D103553X012
Fisherr Large ET and ED Valves
NPS 12 through 16 and NPS 30
Contents
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Introduction

Scope of Manual

This instruction manual includes installation and maintenance information for NPS 12 through 16 and NPS 30 CL150
through 600 Fisher ET and ED valves.
Refer to separate manuals for instructions covering the actuator and accessories.
Do not install, operate, or maintain an ET or ED valve without being fully trained and qualified in valve, actuator, and
accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is important to
carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you
have any questions about these instructions, contact your Emerson Process Management sales office before
proceeding.
www.Fisher.com
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Figure 1. Fisher NPS 12 Valve with Piston Actuator
and FIELDVUE™ DVC6200 Digital Valve Controller
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X0237-1
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Large ET and ED Valves
July 2014

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Summary of Contents for Fisher NPS 12

  • Page 1: Table Of Contents

    ........Introduction Scope of Manual This instruction manual includes installation and maintenance information for NPS 12 through 16 and NPS 30 CL150 through 600 Fisher ET and ED valves. Refer to separate manuals for instructions covering the actuator and accessories.

  • Page 2: Educational Services

    1. Do not exceed the pressure or temperature limits in this manual, on the equipment nameplate, and any applicable code limitations. Educational Services For information on available courses for Fisher Large ET and ED valves, as well as a variety of other products, contact: Emerson Process Management...

  • Page 3: Description

    2. The pressure/temperature limits in this instruction manual and in any applicable standard 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 liquids and gasses.

  • Page 4: Specifications

    Instruction Manual Large ET and ED Valves D103553X012 July 2014 Control valves with WhisperFlo cages provide additional aerodynamic noise attenuation in very demanding vapor or gas applications with high-pressure drops. A WhisperFlo cage with an appropriately sized valve body is designed to reduce the noise level up to -40 dBA.

  • Page 5: Maintenance

    If the valve has ENVIRO-SEALt live-loaded packing or HIGH-SEAL ULF live-loaded packing installed, this initial re-adjustment will probably not be required. See the Fisher instruction manuals titled ENVIRO-SEAL Packing System for Sliding-Stem Valves (D101642X012) or HIGH-SEAL ULF Live-Loaded Packing System (D101453X012) (as appropriate) for packing instructions.
  • Page 6 This is necessary to ensure a good gasket seal because the used gasket might not seal properly. Note If the valve has ENVIRO-SEAL live-loaded packing or HIGH-SEAL ULF live-loaded packing installed, see the Fisher instruction manuals titled ENVIRO-SEAL Packing System for Sliding-Stem Valves (D101642X012) or HIGH-SEAL ULF Live-Loaded Packing...

  • Page 7: Packing Lubrication

    Instruction Manual Large ET and ED Valves D103553X012 July 2014 Packing Lubrication CAUTION Do not lubricate graphite packing. Graphite packing is self-lubricated. Additional lubrication may result in slip-stick movement of the valve. If a lubricator or lubricator/isolating valve (figure 2) is provided for PTFE/composition or other packings that require lubrication, it will be installed in place of the 1/4 NPT pipe plug (key 14, figure 4).
  • Page 8 Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 3. Typical Packing UPPER WIPER UPPER WIPER (KEY 12) (KEY 12) PACKING PACKING FOLLOWER FOLLOWER (KEY 13) (KEY 13) FEMALE FEMALE ADAPTOR ADAPTOR PACKING RING PACKING RING MALE MALE WASHER ADAPTOR ADAPTOR...
  • Page 9 Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 3. Typical Packing (Continued) PACKING PACKING FOLLOWER FOLLOWER (KEY 13) (KEY 13) GRAPHITE RIBBON GRAPHITE RIBBON PACKING RING (KEY 7) PACKING RING (KEY 7) GRAPHITE FILAMENT GRAPHITE FILAMENT PACKING RING (KEY 7) PACKING RING (KEY 7) LANTERN RING LANTERN RING...
  • Page 10 Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 4. Typical Globe Valve Bonnet CU4317 7. Lift the valve plug and stem assembly out of the valve body and set it on a protective surface. If the valve plug is to be reused, protect the valve plug seating surface to prevent scratches.
  • Page 11 Personal injury or damage to equipment could occur if improper stud and nut materials or parts are used. Do not operate or assemble this product with stud(s) and nut(s) that are not approved by Emerson/Fisher engineering and/or listed on the serial card provided with this product.

  • Page 12: Trim Maintenance

    Instruction Manual Large ET and ED Valves D103553X012 July 2014 16. Install new packing and the metal packing box parts according to the appropriate arrangement in figure 3. Place a smooth-edged pipe over the valve stem, and gently tap each soft packing part into the packing box one piece at a time, being sure that air is not trapped between adjacent soft parts.

  • Page 13: Lapping Seating Surfaces

    Instruction Manual Large ET and ED Valves D103553X012 July 2014 For ET valves with HTS1 option (figure 7), the valve has a seat ring seal ring (figure 5, 6, or 7, key 6). Inspect this seal ring, and remove it if replacement is necessary. To remove the seal ring, the retaining ring (key 227) must be removed first.

  • Page 14: Trim Replacement

    Instruction Manual Large ET and ED Valves D103553X012 July 2014 For ET valves with HTS1 option, install the seat ring seal ring (key 6) so that its open side faces the valve stem for Cavitrol III trim and flow-down standard cages. Reverse the seal ring for Whisper Trim III, WhisperFlo, and flow-up standard cages so its open side faces away from the valve stem.
  • Page 15 Secure the seat ring (key 9) with the cap screws (key 49). Tighten the cap screws in a criss-cross pattern to a torque of 39 NSm (29 lbfSft) for NPS 12, 14, and 16 valves. 2. Install a cage gasket (key 11) into the valve. Temporarily install screws or bolts into the tapped holes in the top of the cage assembly (key 3) to help while installing this piece into the valve.
  • Page 16 Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 5. Typical Fisher ET Valve CAGE (KEY 3) VALVE PLUG (KEY 2) SEAL RING (KEY 28) VIEW A VALVE PLUG SEAL RING NOTE: SEAL RING OPENING MUST FACE SEAT RING FOR FLOW DOWN APPLICATIONS AND MUST FACE ACTUATOR FOR FLOW UP APPLICATIONS.
  • Page 17 Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 6. Typical Fisher ED Valve CAGE (KEY 3) VALVE PLUG (KEY 2) PISTON RINGS (KEY 28) VIEW A VALVE PLUG PISTON RINGS APPLY LUB B2411...
  • Page 18 Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 7. Typical Fisher ET Valve with HTS1 Option 21B2120-A FLOW UP FLOW DOWN A6137 / IL FLOW UP FLOW DOWN PEEK ANTI-EXTRUSION RINGS PEEK ANTI-EXTRUSION RINGS VIEW B VIEW A...

  • Page 19: Retrofit: Installing Bore Seal Trim

    Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 8. Fisher Large ED with Bore Seal Trim RETAINER RETAINER PISTON RING PISTON RING CAGE CAGE SEATING AREA SEATING AREA PLUG PLUG BORE SEAL BORE SEAL FLOW UP FLOW DOWN...
  • Page 20 Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 9. Bore Seal Installation Tool GE22109-A Table 5. Bore Seal Installation Tool Dimensions VALVE Dimensions, Inches (See Figure 9) Tool Part PORT SIZE, Number INCH 10.00 10.12 9.80-9.82 10.02-10.00 0.10 0.10 0.32...

  • Page 21: Replacement Of Installed Bore Seal Trim

    Instruction Manual Large ET and ED Valves D103553X012 July 2014 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.

  • Page 22: Lapping Metal Seats (Bore Seal Constructions)

    Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 10. Stake the Threads of the Bore Seal Retainer DEFORM THREAD TO STAKE Bore Seal RETAINER PISTON RING RETAINER Bore Seal METAL PLUG SEAL VALVE PLUG FLOW DOWN A6779 4.

  • Page 23: Trim Replacement (Bore Seal Constructions)

    Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 11. Lower (Valve Plug to Seat Ring) and Upper (Bore Seal to Cage) Seating Surfaces RETAINER PISTON RING CAGE SEATING AREA PLUG BORE SEAL UPPER SEATING SURFACE CAGE PLUG SEAT RING LOWER SEATING SURFACE...

  • Page 24: Parts Ordering

    Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Process Management should not, under any circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the performance of the valve, and could cause personal injury and property damage.

  • Page 25: Parts List

    Instruction Manual Large ET and ED Valves D103553X012 July 2014 Description Part Number Table 6. Approximate Weights APPROXIMATE CONNECTION WEIGHT Seat Ring 10* Bonnet Gasket Size, NPS Type 11* Cage Gasket 13* Seat Ring Gasket (ED valve only) 1410 3100 Stud 1220 2700...
  • Page 26 Instruction Manual Large ET and ED Valves D103553X012 July 2014 Figure 12. Typical Fisher WhisperFlo Trims BONNET CAGE RETAINER WhisperFlo CAGE CAP SCREW SEAT RING...
  • Page 27 Instruction Manual Large ET and ED Valves D103553X012 July 2014...
  • Page 28 Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user. Fisher, FIELDVUE, Cavitrol, WhisperFlo, Whisper Trim, and ENVIRO-SEAL are marks owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co.

This manual is also suitable for:

Nps 30

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