Emerson Fisher GX Instruction Manual
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Emerson Fisher GX Instruction Manual

Control valve and actuator system
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Instruction Manual
D103175X012
Fisherr GX Control Valve and Actuator System
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Introduction

Scope of Manual

This instruction manual includes installation, maintenance, and parts information for the Fisher GX control valve and
actuator system.
Do not install, operate, or maintain a GX 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.

Description

The GX is a compact, state-of-the-art control valve and actuator system, designed to control a wide range of process
gases, vapors, and fluids.
The GX is rugged, reliable, and easy to select. It requires no actuator sizing -- the actuator selection is automatic once
the valve body construction is selected.
The GX meets the requirements of both EN and ASME standards. It is available with a complete accessory package,
including the FIELDVUE DVC2000 integrated digital valve controller.
www.Fisher.com
All manuals and user guides at all-guides.com
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Figure 1. Fisher GX Control Valve, Actuator, and
FIELDVUE DVC2000 Digital Valve Controller
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W8861
GX Valve and Actuator
April 2011

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Summary of Contents for Emerson Fisher GX

  • Page 1: Table Of Contents

    Introduction Scope of Manual This instruction manual includes installation, maintenance, and parts information for the Fisher GX control valve and actuator system. Do not install, operate, or maintain a GX valve without being fully trained and qualified in valve, actuator, and accessory installation, operation, and maintenance.

  • Page 2: Specifications

    All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Table 1. Fisher GX Valve Specifications Specifications ASME Valve Body Size DN 15, 20, 25, 40, 50, 80, 100, 150 NPS 1/2, 3/4, 1, 1-1/2, 2, 3, 4, 6...
  • Page 3 Do not expose this product to service conditions or variables other than those for which the product was intended. If you are not sure what these conditions are you should contact your Emerson Process Management sales office for more complete specifications.

  • Page 4: Maintenance

    All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 4. If continuous operation is required during inspection or maintenance, install isolating valves on either side of the control valve with a bypass valve to control the flow while the control valve is receiving maintenance. WARNING Personal injury could result from packing leakage.
  • Page 5 Note Older GX actuator nameplates do not contain spring configuration information. If you require replacement springs or wish to switch to an optional actuator construction, consult your Emerson Process Management sales office. Note When the GX actuator is equipped with the integrated FIELDVUE DVC2000 digital valve controller (figure 1), additional considerations may be required.
  • Page 6 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Figure 3. Spring Configuration Actuator Disassembly (For Air‐to‐Close Constructions ‐ see figure 20 or 21) 1. Remove the stem connector nut half (key 23), stem connector bolt half (key 24), and travel indicator (key 26). WARNING To avoid personal injury or property damage due to actuator springs (key 12) being under compression, remove the long cap screws (key 16) last.
  • Page 7 S31603 2 bar (29 psi) 1. Only applicable to actuators with spring information on the nameplate (see figure 2). 2. Only applicable to Cavitrol III constructions. Table 3. Fisher GX Maximum Rated Travel TRAVEL ACTUATOR SIZE NUMBER OF CASING BOLTS...
  • Page 8 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Table 4. Body Nut (Key 7) Torque Requirements TORQUE VALVE SIZE lbfSft DN 15, 20, 25 (NPS 1/2, 3/4, 1) 45.5 33.5 DN 40 (NPS 1‐1/2) 79.8 58.9 DN 50 (NPS 2)
  • Page 9 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 10. Connect a separate air supply to the actuator air supply connection (as shown on the yoke in figure 18 or 19) and apply sufficient air pressure to raise the actuator rod (key 22) to the travel stop. Note If converting from air‐to‐close to air‐to‐open action, first move the vent cap (key 21) from the air supply connection on the yoke leg (see figure 20 or 21) to the top of the casing (see figure 18 or 19).
  • Page 10 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 2. Install the diaphragm (key 10) on the diaphragm plate (key 11). Place the washer (key 15) over the center hole of the diaphragm, so that the convex part of the washer is facing down toward the diaphragm. 3.

  • Page 11: Fieldvuet Dvc2000 Digital Valve Controller Mounting

    All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 FIELDVUE DVC2000 Digital Valve Controller Mounting This section provides instruction on mounting the FIELDVUE DVC2000 digital valve controller to the GX control valve. For further detail on the operation and maintenance of the DVC2000, refer to the DVC2000 instruction manual. The FIELDVUE DVC2000 digital valve controller mounts directly to an interface pad on the GX actuator yoke leg, eliminating the need for mounting brackets (see figure 1).

  • Page 12: Packing Maintenance

    All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 A. Mounting the DVC2000 to an air‐to‐open GX actuator (spring‐to‐close) (see figure 4 and figure 18 or 19): 1. Attach the magnetic feedback array (supplied with the DVC2000) to the valve stem connector using the alignment template (supplied with the mounting kit) for accurate alignment.

  • Page 13: Replacing Packing

    All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Packing Adjustment For spring‐loaded single PTFE V‐ring packing (figure 15) or for Graphite ULF packing (figure 16), the Belleville spring pack (key 34) maintains a sealing force on the packing. If leakage is detected around the packing follower (key 29) check to be sure that the packing follower (key 29) is tight.
  • Page 14 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 WARNING If there is evidence of process fluid under pressure leaking from the joint, retighten the valve body/joint nuts and return to the Warning at the beginning of the Maintenance section to ensure proper steps have been taken to isolate the valve and relieve process pressure.
  • Page 15 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 6. For standard bonnet constructions (figures 18, 19, 20, and 21), remove the body nuts (key 7) completely. For extension and bellows bonnet constructions (figures 22 and 23), remove the bonnet nuts (key 46) completely. CAUTION To avoid property damage, place the actuator yoke on a protective surface, as described in the following procedure.
  • Page 16 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 For DN150 balanced constructions, two gaskets are required; one between the valve body and guide sleeve, and the other between the guide sleeve and bonnet. Ensure the gasket seating surfaces are clean and smooth for both gaskets.

  • Page 17: Valve Trim Maintenance

    All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Alternately, the packing follower can be tightened by the following method: a. Tighten the packing follower until the Belleville springs are compressed 100% (or completely flat), as detected by a rapid increase in nut torque.
  • Page 18 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 5. Use a wrench to unscrew the plug/stem assembly (key 3) from the stem extension (key 40) or from bellows/stem assembly (key 49) as follows: a.
  • Page 19 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 3. Remove the seat ring (key 2) from the valve body. 4. Inspect parts for wear or damage that would prevent proper operation of the valve body. 5.
  • Page 20 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 d. Clamp the plug/stem assembly (key 3) and hold it stable. Using a box spanner tool tighten the plug/stem assembly (key 3) into the stem extension (key 40) or into the bellows/stem assembly (key 49) according to the stem extension torque requirements listed in table 10.

  • Page 21: Bellows Maintenance

    2. Remove the plug/stem assemblies as described in the Valve Trim Disassembly section (steps 2 through 6). 3. To install the new bellows / stem assembly (key 49), perform the Valve Trim Assembly (step 3). Figure 6. Fisher GX Handwheel Assembly LOCKING...

  • Page 22: Handwheel Operation

    All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Figure 7. Fisher GX Handwheel Orientation and Grease Zerk Location GE05810‐D GE05809‐D APPLY LUBRICANT AIR‐TO‐OPEN, SPRING‐TO‐CLOSE AIR‐TO‐CLOSE, SPRING‐TO‐OPEN Handwheel Operation CAUTION This handwheel is designed only for use with size 225 and 750 actuators with 20 mm travel. To avoid equipment damage, do not assemble this handwheel on size 750 actuators with 40 mm travel or size 1200 actuators.

  • Page 23: Travel Stop Operation

    All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 During normal pneumatic operation when the handwheel is not needed, a locking screw (see figure 6) is provided on the side of the handwheel housing to lock the handwheel levers out of the way. WARNING To avoid personal injury or equipment damage due to possible sudden shifting or falling of the valve assembly, do not lift the valve assembly by the handwheel.
  • Page 24 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Figure 8. Fisher GX Travel Stop Assembly ADJUSTABLE CAP SCREW (2) LEVER COVER PLATE COVER PLATE LEVER ADJUSTABLE CAP SCREW STUD AND CAP SCREW (4)
  • Page 25 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Figure 9. Fisher GX Travel Stop Orientation ACTUATOR ACTUATOR BRACKET LEVER LEVER APPLY BACK NUT (2) LITHIUM STEM GREASE TO CONNECTOR LEVERS SHAFT ADJUSTABLE...
  • Page 26 GX Valve and Actuator April 2011 D103175X012 Figure 10. Fisher GX Balanced Trim Figure 12. Fisher GX Unbalanced Port‐Guided Trim (Standard for DN 80 and 100 [NPS 3 and 4]) (DN 40 to 150 [NPS 1‐1/2 to 6]) APPLY LUBRICANT GE03755_8 GE07161‐D...
  • Page 27 Instruction Manual GX Valve and Actuator D103175X012 April 2011 Figure 14. Fisher GX Control Valve with Typical Soft Figure 16. Fisher GX Graphite ULF Packing Seat Trim Construction DN15 through DN100 (NPS 1/2 through 4) (Port Sizes of 36mm ‐ 136mm) W9023‐1...
  • Page 28 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Figure 18. Fisher GX Control Valve and Actuator System Assembly, Air‐to‐Open (Spring‐to‐Close) (DN25 (NPS 1) with Unbalanced Contoured Plug) AIR SUPPLY CONNECTION GE02171‐G APPLY LUBRICANT...
  • Page 29 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Figure 19. Fisher GX Control Valve and Actuator System Assembly, Air‐to‐Open (Spring‐to‐Close) (DN150 (NPS 6) with Unbalanced Contoured Plug) AIR SUPPLY CONNECTION GE17517‐E APPLY LUBRICANT...
  • Page 30 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Figure 20. Fisher GX Control Valve and Actuator System Assembly, Air‐to‐Close (Spring‐to‐Open) (DN25 (NPS 1) with Unbalanced Contoured Plug) AIR SUPPLY CONNECTION APPLY LUBRICANT...
  • Page 31 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Figure 21. Fisher GX Control Valve and Actuator System Assembly, Air‐to‐Close (Spring‐to‐Open) (DN150 (NPS 6) with Unbalanced Contoured Plug) AIR SUPPLY CONNECTION GE23239‐C APPLY LUBRICANT...
  • Page 32 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Figure 22. Extension Bonnet with Graphite ULF Packing STEM EXTENSION HEX FLATS GF00337‐D APPLY LUBRICANT DO NOT APPLY LUBRICANT...
  • Page 33 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Figure 23. Bellows Extension Bonnet with PTFE Packing STEM EXTENSION HEX FLATS APPLY LUBRICANT DO NOT APPLY LUBRICANT GF00338‐D...
  • Page 34 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Figure 24. Cryogenic Extension Bonnet APPLY LUBRICANT GE23746‐A Figure 25. Fisher Cavitrol III Trim, DN25 and DN50 (NPS 1 and NPS 2) APPLY LUBRICANT GG03061‐2...
  • Page 35 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Figure 26. Bellows Nut Removal and Installation Tool C HEX C HEX 8 mm 6 mm DN80 and 100 DN15, 20, 25, 40, and 50 (NPS 3 and 4) (NPS 1/2, 3/4, 1, 1‐1/2, and 2) GF00536_3...
  • Page 36 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Figure 27. Handwheel Assembly APPLY LUBRICANT GE05809_D...

  • Page 37: Parts Ordering

    Note Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use, or maintenance of any product. Responsibility for the selection, use, and maintenance of any product remains with the purchaser and...

  • Page 38: Parts Kits

    All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Parts Kits Valve Size DN 25, 40, and 50 DN 80 and 100 DN 150 (NPS 1, 1‐1/2, and 2) (NPS 3 and 4) (NPS 6) PACKING Stem Diameter...

  • Page 39: Parts List

    April 2011 Parts List Description Nameplate Warning Tag Note Seal Ring For part numbers not shown, contact your Emerson Process Backup Ring Management sales office. Extension Bonnet Stem Extension Extension Bonnet Lower Bushing Graphite ULF Packing Ring (2 req'd) Description...
  • Page 40 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 41 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 42 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 43 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 44 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE TRAVEL VALVE VALVE PLUG STEM SEAT RING SEAT RING PART...
  • Page 45 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 46 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 47 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, CD3MN Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE PLUG STYLE TRIM STYLE...
  • Page 48 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, CD3MN Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE PLUG STYLE PLUG...
  • Page 49 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, CF3 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE PLUG STYLE PLUG...
  • Page 50 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, CF3 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE PLUG STYLE PLUG...
  • Page 51 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, CN7M and CW2M Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE PLUG STYLE...
  • Page 52 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Plain Bonnet, CN7M and CW2M Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE PLUG STYLE...
  • Page 53 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Extension Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 54 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Extension Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 55 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Extension Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 56 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Bellows Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE TRAVEL VALVE VALVE PLUG STEM SEAT RING SEAT RING PART...
  • Page 57 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Bellows Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 58 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Bellows Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 59 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Bellows Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 60 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Bellows Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 61 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Bellows Bonnet, LCC, WCC/1.0619 and CF3M/1.4409 Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE...
  • Page 62 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator April 2011 D103175X012 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Bellows Bonnet, CW2M Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE PLUG STYLE PLUG...
  • Page 63 All manuals and user guides at all-guides.com Instruction Manual GX Valve and Actuator D103175X012 April 2011 Key 3 Valve Plug/Stem and Key 2 Seat Ring (Bellows Bonnet, CW2M Valve Body Material) PORT VALVE VALVE TRAVEL VALVE STEM SEAT RING SEAT RING SIZE PLUG STYLE PLUG...
  • Page 64 D103175X012 Fisher, FIELDVUE, Cavitrol, and Whisper Trim are marks owned by one of the companies in the Emerson Process Management business division of Emerson Electric Co. Emerson Process Management, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.

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