Instruction Manual

ManualsBrandsEmerson ManualsControl ValvesEmerson Fisher GX

www.Fisher.com

Fisherr GX 3-Way

Control Valve and Actuator System

Contents

Introduction 1.................................

Scope of Manual 1.............................

Description 1.................................

Specifications 2...............................

Valve Installation 2.............................

Maintenance 3.................................

Actuator Maintenance 5........................

Packing Maintenance 9.........................

Replacing Packing (Pneumatic Actuators) 9........

Replacing Packing (Electric Actuators) 12..........

Valve Trim Maintenance 15.....................

Parts Kits 19...................................

Parts List 20...................................

Figure 1. Fisher GX 3-Way Control Valve, Actuator,

and FIELDVUE DVC2000 Digital Valve Controller

W9557

GX 3-WAY

HIGH-TEMPERATURE

X0218

GX 3-WAY

Introduction

Scope of Manual

This instruction manual includes installation, maintenance, and parts information for the Fisher GX 3-Way control

valve and actuator system.

Do not install, operate, or maintain a GX 3-Way 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 3-Way meets the requirements of both EN and ASME standards. It is available with a complete accessory

package, including the FIELDVUEt DVC2000 integrated digital valve controller.

Instruction Manual

D103312X012

GX 3-Way Valve and Actuator

August 2011

Summary of content (28 pages)

PAGE 1
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 Fisherr GX 3-Way Control Valve and Actuator System Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Valve Installation . . . . . . . . . . . . . . . . . . . . .
PAGE 2
Instruction Manual GX 3-Way Valve and Actuator August 2011 D103312X012 Table 1. Fisher GX 3-Way Valve Specifications(1) Specifications EN ASME Valve Body Sizes DN 25, 40, 50, 80, 100 NPS 1, 1-1/2, 2, 3, 4 Pressure Rating PN 10 / 16 / 25 / 40 per EN 1092-1 CL150 / 300 per ASME B16.34 End Connections Flanged raised face per EN 1092-1 Flanged raised face per ASME B16.5 Valve Body Materials Bonnet Materials 1.0619 steel ASME SA216 WCC steel 1.
PAGE 3
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 Figure 2. Fisher GX 3-Way Nameplate (Key 35) ELECTRIC ACTUATOR GE35409-C GG12218-A 1. Before installing the valve, inspect it to be certain that the valve body cavity is free of all foreign material. Clean out all pipelines to remove scale, welding slag and other foreign material. 2. The control valve assembly may be installed in any orientation unless limited by seismic criteria.
PAGE 4
GX 3-Way Valve and Actuator August 2011 Figure 3. Fisher GX 3-Way Valve Bottom-Port Common Flow Direction GE37477_FLOWDIR Figure 4.
PAGE 5
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 Table 2. Fisher GX 3-Way Rated Travel VALVE SIZE ACTUATOR SIZE NUMBER OF CASING BOLTS TRAVEL STEM CONNECTOR GAP SETTINGS mm mm 1, 1-1/2 225 6 19 21 2 750 10 19 21 3, 4 750 10 38 40 NPS Table 3. Body Nut (Key 7) Torque Requirements VALVE SIZE TORQUE NSm lbfSft DN 25 and 40 (NPS 1 and 1-1/2) 79.8 58.
PAGE 6
GX 3-Way Valve and Actuator August 2011 Instruction Manual D103312X012 5. Shut off the air pressure and disconnect the separate air supply to the lower diaphragm casing (as shown in figure 11). 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. The upper actuator casing may remain fixed to the diaphragm and lower casing during disassembly, even if the casing cap screws have been loosened.
PAGE 7
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 Actuator Assembly (For Fail-Down Constructions, see figure 11) 1. Install the diaphragm (key 10) on the diaphragm plate (key 11). Insert the cap screw (key 14) through the actuator spacer (key 13) and place this assembly through the diaphragm/diaphragm plate assembly. 2.
PAGE 8
GX 3-Way Valve and Actuator Instruction Manual August 2011 D103312X012 Actuator Assembly (For Fail-Up Constructions, see figure 8) 1. Position the upper diaphragm casing (key 9) upside down on the bench so that it lays flat and not off balance. Note If converting from fail-down to fail-up action, first move the vent cap (key 21) from the top of the casing (see figure 8) and thread into the air supply connection on the yoke leg (see figure 11). 2.
PAGE 9
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 15. Align the pointer of the travel indicator (key 26) with the appropriate mark on the travel scale. 16. Tighten the stem connector cap screws (key 25) to 35 NSm (26 lbfSft). Note For fail-up action, the air supply tubing must be connected to the actuator upper casing at the air supply connection, see figure 8. (If converting from fail-down to fail-up, the tubing will need to be re-routed to this location).
PAGE 10
GX 3-Way Valve and Actuator Instruction Manual August 2011 D103312X012 Note The following step also provides additional assurance that the valve body fluid pressure has been relieved. 2. For fail-up constructions, as shown in figure 8: a. Connect a separate air supply to the air supply connection on the upper casing (shown in figure 8) and apply sufficient air pressure to move the plug/stem to mid-travel. b.
PAGE 11
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 12. Remove the Belleville spring pack (key 34) and packing spacer (key 30) from the bonnet (key 4). Carefully push out the remaining packing box parts from the bonnet (key 4) using a rounded rod or other tool which will not scratch the packing box wall. Clean the packing box and the metal packing box parts. CAUTION Inspect the valve stem, threads and packing box surfaces for any sharp edges that might cut the packing.
PAGE 12
GX 3-Way Valve and Actuator Instruction Manual August 2011 D103312X012 table 2. Thread the locknut (key 108) up against the stem extension and tighten to a torque of 48 N•m (35 lbf•ft) for the 10mm stems or 175 N•m (129 lbf•ft) for 14mm stems. 23. Stroke the actuator rod until it contacts the lower stem connector (key 27) or stem extension (key 106, figure 12) and install the stem connector halves and travel indicator (keys 23, 24, and 26) with the cap screws (key 25).
PAGE 13
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 7. Valve body nuts (key 7) attach the actuator yoke (key 8) to the valve body (key 1). Loosen these nuts approximately 3mm (1/8 inch). D For HT constructions, see figure 12. Nuts (key 7) attach the yoke extension (key 105) to the valve body (key 1). Loosen these nuts approximately 3mm (1/8 inch). It is not necessary to loosen the nuts which attach the actuator yoke (key 8) to the yoke extension. 8.
PAGE 14
Instruction Manual GX 3-Way Valve and Actuator August 2011 D103312X012 19. Install a new O-ring (key 81) in the groove on the bottom of the side-port common bonnet (key 4). See figure 9. Apply a general purpose silicone base lubricant. D For HT constructions, see figure 12. Install a new graphite seal ring (key 107). Apply a general purpose silicone base lubricant. 20. Carefully install the bonnet (key 4) onto the valve stem. 21.
PAGE 15
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 Figure 5. Fisher GX 3-Way Flow Direction Nameplate GE37477_BP_PLAT GE37477_SP_PLAT BOTTOM-PORT COMMON SIDE-PORT COMMON Valve Trim Maintenance Key numbers in this section refer to figures 9 and 10. Reference the flow direction nameplate (figure 5) to determine side-port common (unbalanced) or bottom-port common (balanced) trim style. Side-Port Common and Bottom-Port Common Trim Disassembly 1.
PAGE 16
GX 3-Way Valve and Actuator August 2011 Instruction Manual D103312X012 d. Insert the socket onto the hex head of the seat ring or cage tool. WARNING Be careful to hold the torque gun, attached socket, and tool at right angles to the seat ring or cage when applying torque.
PAGE 17
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 Figure 6. Seat Ring or Cage Removal and Installation Tool A B E D F C C GE02918-6 Table 6. Seat Ring or Cage Driver Dimensions Valve Size A Part Number B C D E F DN NPS mm 25 1 GE36717X012 36 20 2X 13.2 7.5 100 53 40 1-1/2 GE36717X022 46 28 2X 13.2 7.5 105 63 50 2 GE36717X032 60 36 2X 15.2 8.5 121.5 93 80 3 GE36717X042 70 44 2X 17.2 9.
PAGE 18
GX 3-Way Valve and Actuator August 2011 Instruction Manual D103312X012 CAUTION Be careful when inserting the plug/stem assembly into the cage. Lower the plug into the cage slowly as this will seat the seal ring to the plug. Make sure the seal ring (key 37) or backup ring (key 38) does not become disengaged from the cage groove. 7. To insert the plug/stem assembly (key 3) into the cage (key 2), apply a general purpose silicone-based lubricant. Slowly insert the plug/stem assembly into the cage.
PAGE 19
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 Parts Kits Packing Kits Valve Size Stem Diameter PTFE packing (Contains keys 32 and 33) DN 25 and 40 (NPS 1 and 1-1/2) 10 mm RGXPACKX012 DN 50, 80 and 100 (NPS 2, 3 and 4) 14 mm RGXPACKX022 Graphite ULF packing (Contains keys 42, 43, and 44) RGXPACKX032 RGXPACKX042 PACKING KITS Actuator Kits ACTUATOR KITS Actuator Size 225 750 Actuator (Contains keys 10, 19, 109, and 20) RGX225X0022 RGX750X0032 Bottom-Port Common Seal K
PAGE 20
Instruction Manual GX 3-Way Valve and Actuator August 2011 D103312X012 Parts List Note For part numbers not shown, contact your Emerson Process Management sales office.
PAGE 21
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 Figure 7.
PAGE 22
Instruction Manual GX 3-Way Valve and Actuator August 2011 D103312X012 Figure 8.
PAGE 23
Instruction Manual D103312X012 GX 3-Way Valve and Actuator August 2011 Figure 9. Fisher GX 3-Way Side Port Common Trim Construction SIDE-PORT COMMON GE37477_SP_TRIM Figure 10.
PAGE 24
Instruction Manual GX 3-Way Valve and Actuator August 2011 D103312X012 Figure 11.
PAGE 25
Instruction Manual GX 3-Way Valve and Actuator D103312X012 August 2011 Figure 12.
PAGE 26
GX 3-Way Valve and Actuator August 2011 Figure 13.
PAGE 27
Instruction Manual D103312X012 GX 3-Way Valve and Actuator August 2011 27
PAGE 28
GX 3-Way Valve and Actuator August 2011 Instruction Manual D103312X012 Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user. Fisher and FIELDVUE are marks owned by one of the companies in the Emerson Process Management business division of Emerson Electric Co.