Product Bulletin
51.1:GX 3--Way
D103305X012
August 2011
GX 3--Way Valve and Actuator
Fisherr GX 3-Way
Control Valve and Actuator System
The Fisher GX 3-Way is a compact, state-of-the-art
control valve and actuator system, designed to
accurately control water, oils, steam, and other
industrial fluids. The robust GX 3-way valve package
is perfectly suited to address the space limitations of
the OEM industry.
The GX 3-Way is rugged, reliable, and easy to
select. The internal valve trim is designed to ensure
long service life and avoiding unnecessary
maintenance. The same construction may be used
for both converging and diverging applications.
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.
The GX 3-Way trim characteristics are designed for
accurate temperature control in heat exchanger
applications.
D Side-Port Common (SPC)----The side flange is
the common pipe connection for general converging
(flow-mixing) and diverging (flow-splitting) service
(see figure 5). Utilizes an unbalanced plug design.
D Bottom-Port Common (BPC)----A balanced
design used for high nP applications. The bottom
flange is the common pipe connection for both
converging and diverging service (see figure 9).
D High--Temperature Side--Port Common
(SPC)-- -- The side flange is the common pipe
connection for general converging (flow-mixing) and
diverging (flow-splitting) service (see figure 3).
Utilizes an unbalanced plug design, a stem
extension, a yoke extension, and includes
live--loaded ULF graphite packing and a hard--faced
seat ring.
W9557
www.Fisher.com
GE49204
X0176
GX 3--WAY
Figure 1. Fisher GX 3-Way Control Valve, Actuator, and FIELDVUE DVC2000 Digital Valve Controller
GX 3--WAY HIGH--TEMPERATURE
GX 3--Way Valve and Actuator
CLAMPED BONNET DESIGN
Product Bulletin
51.1:GX 3--Way
August 2011
COMPACT FIELD-REVERSIBLE
MULTI-SPRING ACTUATOR
INTEGRATED POSITIONER
MOUNTING
NAMUR POSITIONER
MOUNTING CAPABILITY
ONE-PIECE SCREWED
PACKING FOLLOWER
STANDARD LIVE-LOADED
PACKING
W9578-1
Figure 2. Fisher GX 3-Way Control Valve Assembly with Port-Guided Contoured Plug (Side Port Common)
COMPACT FIELD-REVERSIBLE
MULTI-SPRING ACTUATOR
CLAMPED BONNET DESIGN
INTEGRATED POSITIONER
MOUNTING
NAMUR POSITIONER
MOUNTING CAPABILITY
STEM EXTENSION
YOKE EXTENSION
ONE-PIECE SCREWED
PACKING FOLLOWER
STANDARD GRAPHITE ULF
LIVE-LOADED PACKING
GRAPHITE SEAL RING
X0094--1
HARD--FACED SEAT AND GUIDE
SURFACES ON SEAT RING
Figure 3. Fisher GX 3-Way High--Temperature Control Valve Assembly with Port-Guided Contoured Plug (Side Port Common)
2
Product Bulletin
51.1:GX 3--Way
August 2011
GX 3--Way Valve and Actuator
Contents
Features 3.................................
Principle of Operation 10.....................
GX 3-Way Control Valve Specifications
and Materials of Construction 11...........
The GX 3-Way Diaphragm Actuator 14........
Valve-Actuator Dimensions and Weights 17....
GX 3-Way Actuator Accessories 19...........
The FIELDVUE DVC2000
Digital Valve Controller 19.................
Optional Positioners and Instruments 20.......
Coefficients 21.............................
Features
D Easy to size and select
D No actuator sizing required--selection is
automatic
D Engineered for easy maintenance
D Maximum part commonality across sizes
D Replaceable trim
D Low lifetime costs
D Robust, low-profile design
D Available with integrated, easy-to-calibrate
DVC2000 digital valve controller
D Valve body sizes DN 25 to DN 100
(NPS 1 through 4)
D Pressure Classes PN 10-40,
CL150 and 300
D High capacity design
D Valve body flow passage optimized for flow
stability
D Shutoff capabilities: Class IV metal to metal
D ISO 5210 F7 mounting available for use with
electric actuators
3
GX 3--Way Valve and Actuator
LINKAGE-LESS POSITION
FEEDBACK
Product Bulletin
51.1:GX 3--Way
August 2011
INTEGRAL PNEUMATIC
PASSAGEWAYS
DVC2000
COVER
PUSH-BUTTON INSTRUMENT
SETUP
Figure 4. Fisher GX 3-Way and FIELDVUE DVC2000 Digital Valve Controller
Optimized valve and actuator system. Product
simplicity and ease of selection form the foundation
of the GX 3-Way. Mounted with a digital or analog
positioner, the GX 3-Way provides high performance
control a cross a wide range of process applications.
Compact actuator design. The multi-spring GX
3-Way actuator is a compact robust design. The GX
3-Way design has been optimized to eliminate
complicated 3-way actuator sizing procedures - once
the valve body and port size are selected, the
actuator size is fixed.
Reliable Actuator Performance. Special actuator
diaphragm material helps reduce common problems
such as air o xidation, thermal aging, low
temperature embrittlement, and loss of retention.
The double-sided diaphragm within the a ctuator
helps eliminate mechanical wear-induced failure.
Modular design. The design architecture has been
optimized to maximize the use of common parts
across sizes. The actuator stem and stem connector
areusedacrossallGX3-Way sizes.
Low lifetime costs. Reduced product complexity,
low parts count, and part commonality all contribute
to reduced inventory and maintenance costs.
Stable flow control. The flow cavity of the GX
3-Way valve body has been engineered to provide
stable flow and reduce process variability. This linear
stability for both converging and diverging flow is
perfectly suited for temperature and pH control
applications.
Live-loaded packing. The GX 3-Way comes with
live-loaded PTFE V-ring packing as standard. The
live-loaded design helps to seal your process to
conserve valuable process fluid, while reducing
emissions to the environment. The long-life and high
reliability of the live-loaded system also reduces
maintenance costs and process downtime. ULF
(ultra low friction) graphite packing is also available
for all sizes and is standard on HT (high
temperature) construction.
4
Product Bulletin
51.1:GX 3--Way
August 2011
GX 3--Way Valve and Actuator
Easy maintenance. The simple screwed seat-ring
and one -piece plug and stem design provide easy
maintenance. Design simplicity and parts
commonality contribute to reduced spares inventory.
The integrated DVC2000 digital valve controller
allows easy instrument removal, without a
requirement for tubing disconnection or replacement
(fail-down construction).
Digital valve controller. The GX 3-Wayisavailable
with the DVC2000 digital valve controller. The
DVC2000 is easy to use, compact, and designed for
easy mounting. It converts a 4-20 mA input signal
into a pneumatic output signal, which feeds the
control valve actuator. Instrument setup is performed
with a push button and liquid crystal display (LCD)
interface. This interface is protected from the
environment within a sealed enclosure. The interface
supports multiple languages, including German,
French, Italian, Spanish, Chinese, Japanese,
Portuguese, Russian, Polish, Czech, Arabic, and
English.
Intrinsic safety and non-incendive construction is
available to CSA, FM, ATEX, and IEC standards. An
optional module p rovides integrated limit switches
and a position transmitter.
Integrated mounting. The DVC2000 digital valve
controller integrally mounts to the GX 3-Way
actuator, eliminating the need for mounting brackets.
The DVC2000 transmits a pneumatic signal to the
actuator casing via an air passage in the yoke leg,
causing the valve to stroke (see figure 13). This
eliminates the need for positioner-to-actuator tubing
in the fail-down configuration.
The DVC2000 mounting interface is identical on both
sides of the actuator yoke for valve body sizes DN
25 through DN 100 (NPS 1 through 4). This
symmetrical design allows the DVC2000 to be easily
moved from one side of the valve to the other
without the need to rotate the actuator.
Linkage-less feedback. The DVC2000 digital valve
controller offers as standard a non-contacting valve
position feedback system. This is a true linkage-less
design, which uses no levers and no touching parts
between the valve stem and the positioner.
Additional Accessory selection. The GX 3-Way is
available with a variety of digital or analog
positioners besides the DVC2000, as well as
solenoid and limit switches. The actuator is also
compatible with the IEC 60534-6-1 (NAMUR)
positioner mounting standard.
5
GX 3--Way Valve and Actuator
Flow Directions --- Side Port Common Constructions
See figures 5, 6, 7, and 8.
DIVERGING
BONNET
O-RING
LEFT PORT
(COMMON PORT)
W9580-1
VALVE PLUG
SEAT RING
BOTTOM PORT
Figure 5. Side Port Common Construction Details for Diverging Constructions
Product Bulletin
51.1:GX 3--Way
August 2011
RIGHT PORT
INLET
DIVERGING
PLUG DOWN (0% TRAVEL)
ALL FLOW PASSES
THROUGH FROM LEFT TO
RIGHT-HAND PORT
Figure 6. Fisher GX 3-Way Flow Directions for Side Port Common Diverging Constructions
PLUG MID TRAVEL (50% TRAVEL)
DIVERGING
INLET
FLOW IS DIVERTED EQUALLY
BETWEEN BOTTOM AND
RIGHT-HAND PORT
DIVERGING
PLUG UP (100% TRAVEL)
INLET
ALL FLOW PASSES
THROUGH FROM LEFT TO
BOTTOM PORT
6
Product Bulletin
51.1:GX 3--Way
August 2011
CONVERGING
LEFT PORT
(COMMON PORT)
BONNET
O-RING
VALVE PLUG
SEAT RING
GX 3--Way Valve and Actuator
RIGHT PORT
W9580-1
Figure 7. Side Port Common Construction Details for Converging Constructions
CONVERGING
PLUG DOWN (0% TRAVEL)
BOTTOM PORT FLOW IS SHUT-
OFF. ALL RIGHT-HAND FLOW
EXITS LEFT-HAND PORT
Figure 8. Fisher GX 3-Way Flow Directions for Side Port Common Converging Constructions
BOTTOM PORT
CONVERGING
PLUG MID TRAVEL (50% TRAVEL)
INLET INLET
INLET
FLOW IS MIXED EQUALLY FROM
BOTTOM AND RIGHT-HAND
PORTS
CONVERGING
PLUG UP (100% TRAVEL)
INLET
RIGHT-HAND FLOW IS SHUTOFF.
ALL BOTTOM PORT FLOW EXITS
THROUGH LEFT-HAND PORT
7
GX 3--Way Valve and Actuator
Flow Directions --- Bottom Port Common Constructions
See figures 9, 10, 11, and 12.
DIVERGING
BONNET
O-RING
LEFT PORT
LOWER
SEAT / CAGE
Product Bulletin
51.1:GX 3--Way
August 2011
VALVE PLUG
SEAL RING
BACKUP RING
RIGHT PORT
W9579-1
DIVERGING
PLUG DOWN (0% TRAVEL)
INLET
ALL FLOW EXITING
RIGHT-HAND PORT
Figure 10. Fisher GX 3-Way Flow Directions for Bottom Port Common Diverging Constructions
BOTTOM PORT (COMMON PORT)
Figure 9. Bottom Port Common Construction Details for Diverging Constructions
DIVERGING
PLUG MID TRAVEL (50% TRAVEL)
INLET
FLOW IS DIVERTED EQUALLY
BETWEEN BOTH SIDE PORTS
DIVERGING
PLUG UP (100% TRAVEL)
INLET
ALL FLOW IS EXITING THE
LEFT-HAND PORT
8
Product Bulletin
51.1:GX 3--Way
August 2011
GX 3--Way Valve and Actuator
CONVERGING
LEFT PORT
W9579-1
CONVERGING
PLUG DOWN (0% TRAVEL)
BONNET
VALVE PLUG
O-RING
LOWER
SEAT / CAGE
BOTTOM PORT (COMMON PORT)
SEAL RING
BACKUP RING
RIGHT PORT
Figure 11. Bottom Port Common Construction Details for Converging Constructions
PLUG MID TRAVEL (50% TRAVEL)
CONVERGING
CONVERGING
PLUG UP (100% TRAVEL)
LEFT-HAND FLOW IS SHUTOFF.
ALL RIGHT-HAND FLOW EXITS
THROUGH THE BOTTOM
Figure 12. Fisher GX 3-Way Flow Directions for Bottom Port Common Converging Constructions
INLET
INLET INLET
FLOW IS MIXED EQUALLY FROM
BOTH SIDE PORTS
INLET
RIGHT-HAND FLOW IS SHUTOFF.
ALL LEFT-HAND FLOW EXITS
THROUGH THE BOTTOM PORT
9
GX 3--Way Valve and Actuator
Principle of Operation - GX 3-Way Actuator
Product Bulletin
51.1:GX 3--Way
August 2011
E0896-3
AIR VENT
FAIL-DOWN
(STANDARD CONFIGURATION)
Figure 13. Fisher GX 3-Way Principle of Operation--Actuator Fail Position
AIR SUPPLY
AIR SUPPLY
AIR VENT
FAIL-UP
(OPTIONAL CONFIGURATION)
Integrated Air Supply. When mounted with the
DVC2000 digital valve controller, the GX 3-Way uses
an integrated actuator air supply system. In the
fail-down configuration, air is supplied to the lower
actuator casing via a port on the actuator yoke face
-- no tubing is required. In the fail-up configuration,
air is supplied to the upper casing via tubing.
10
Product Bulletin
51.1:GX 3--Way
August 2011
GX 3--Way Valve and Actuator
GX 3-Way Control Valve Specifications and Materials of Construction
See tables 1 and 2.
Table 1. Fisher GX 3-Way Valve Specifications
Specifications EN ASME
Va lve Body Size DN 25, 40, 50, 80, 100 NPS 1, 1--1/2, 2, 3, 4
Pressure Rating
End Connections
Va lve Body Materials
Bonnet Materials
PN 10 / 16 / 25 / 40 per EN 1092-1
Flanged raised face per EN 1092-1
1.0619 steel ASME SA216 WCC steel
1.4409 stainless steel ASME SA351 CF3M stainless steel
1.4409 stainless steel / CoCr-A SA351 CF3M SST / CoCr-A
Face-to-Face Dimensions
Shutoff per IEC 60534-4
and ANSI/FCI 70-2
Flow Direction Converging and Diverging
Trim Style
Side Port Common All sizes
Bottom Port Common All sizes
1. Stainless steel valve body is recommended for steam service when the high temperature (HT) construction is selected.
(1)
CL150 / 300 per ASME B16.34
Flanged raised face per ASME B16.5
Screwed (NPS 1, 1--1/2, and 2)
Seetable10
Metal seat - Class IV (standard)
SPC HT construction: Metal seat -- Class IV for bottom seat, Class II for upper seat
Type Plug Sizes Description
Unbalanced Port-guided
Balanced Cage-guided
Table 2. Materials (Other Valve Components)
Component Material
Packing Follower S21800 SST screwed follower
Body/Bonnet
Bolting and Nuts
Packing
Bonnet Gasket Graphite laminate
Bottom Port
Common Trim
(all sizes)
O-ring
(not used with
GX 3--Way HT)
Seal Ring
(GX 3--Way HT)
Stem Extension
(GX 3--Way HT)
SA193-B7 studs / SA194-2H nuts with NCF2 coating for carbon steel and stainless steel constructions
Live-loaded PTFE V-ring (standard) with N07718 Belleville springs
Live-loaded Graphite ULF (optional) with N07718 Belleville springs, (standard) on HT construction.
Carbon-Filled PTFE Seal Ring
NBR (Standard) --46 to 82_C (--50 to 180_F)
Ethylene Propylene [EPDM] (Optional): --46 to 232_C (--50 to 450_F) in steam and hot water;
Back-up Rings
NBR (Standard) --46 to 82_C (--50 to 180_F)
Ethylene Propylene [EPDM] (Optional): --46 to 232_C (--50 to 450_F) in steam and hot water;
--46 to 121_C (--50 to 250_F) in air (EPDM is not recommended for use in hydrocarbons)
FKM Fluorocarbon (Optional): --18 to 204_C(0to400_F) (Applicable in a wide variety of solvents, chemicals, and
hydrocarbons. Avoid use with steam, ammonia, or hot water over 82_C [180_F])
Graphite (FMS 17F27) --46 to 371_C (--50 to 700_F)
Stainless steel
--46 to 121_C (--50 to 250_F) in air (EPDM is not recommended for use in hydrocarbons)
FKM Fluorocarbon (Optional): --18 to 204_C(0to400_F) (Applicable in a wide variety of solvents,
chemicals, and hydrocarbons. Avoid use with steam, ammonia, or hot water over 82_C [180_F])
11
GX 3--Way Valve and Actuator
Table 3. Trim Materials (all sizes)
Valve Body
Construction
Carbon steel (1.0619 /
WCC)
Stainless steel
(1.4409 / CF3M)
1. HT construction includes CF3M/CoCr--A lower seating. Seat and guide surfaces are hard--faced.
Trim Type Stem Plug Upper Seat Lower Seat/Cage
Bottom Port Common S31603 strain hardened
Side Port Common S31603 strain hardened CF3M
Bottom Port Common S31603 strain hardened
Side Port Common S31603 strain hardened CF3M
CF3M Chrome-plated CF3M/CoCr-A
CF3M/CoCr-A
CF3M Chrome-plated CF3M/CoCr-A
CF3M/CoCr-A
Product Bulletin
51.1:GX 3--Way
August 2011
(1)
CF3M
CF3M
CF3M
CF3M
Table 4. Allowable Temperature Ranges for Valve Body, Bonnet and Trim
VALVE BODY / BONNET
MATERIAL
1.0619/SA216 WCC Steel Standard
1.4409/SA351 CF3M SST Standard
1.0619/SA216 WCC Steel HT Construction Graphite ULF Graphite laminate Side Port Common -- 29 371 -- 20 700
1.4409/SA351 CF3M SST HT Construction Graphite ULF Graphite laminate Side Port Common -- 4 6 371 -- 5 0 700
1. Bonnet O-ring and back-up ring materials used on BPC trim may be limited by temperature and application.
BONNET STYLE PACKING GASKET TRIM STYLE
PTFE or
Graphite ULF
PTFE or
Graphite ULF
Graphite laminate
Graphite laminate
(1)
TEMPERATURE
_C _F
Min Max Min Max
Bottom Port Common,
Side Port Common
Bottom Port Common,
Side Port Common
-- 29 232 -- 20 450
-- 46 232 -- 50 450
12
Figure 14. Material Pressure/Temperature Curves
Product Bulletin
51.1:GX 3--Way
August 2011
BELLEVILLE
SPRING PACK
PACKING SPACER
ANTI-EXTRUSION
WASHER
PACKING SET
ANTI-EXTRUSION
WASHER
PACKING
BOX RING
E0897/IL
GX 3--Way Valve and Actuator
STANDARD BONNET WITH PTFE PACKING SET
DN 25 through DN 100 (NPS 1 through 4)
BELLEVILLE
SPRING PACK
PACKING SPACER
PACKING
RINGS
PACKING
BOX RING
GE38594_ULF
STANDARD BONNET WITH OPTIONAL GRAPHITE ULF PACKING SET
(STANDARD ON HT CONSTRUCTION)
DN 25 through DN 100 (NPS 1 through 4)
Figure 15. Fisher GX 3-Way Packing
13
GX 3--Way Valve and Actuator
Product Bulletin
51.1:GX 3--Way
August 2011
The GX 3-Way Diaphragm Actuator
The GX 3-Wayusesamulti-spring, pneumatic
diaphragm actuator (see figure 16). It is capable of
air supply pressures up to 5.0 barg (72 psig),
allowing valve shutoff at high pressure drops (see
table 8).
The GX 3-Way product selection system
automatically matches the actuator to the valve,
eliminating the need for complex actuator sizing
procedures.
The multiple spring design provides the preload,
eliminating the need for bench set adjustment. The
actuator is available in fail-down and fail-up
configurations.
The GX 3-Wayactuatorcanbeusedforthrottlingor
on-off service.
W8487-3/IL
The GX 3-Way is available with the integrated
DVC2000 digital valve controller. Other digital and
analog positioners are available, as well as optional
Figure 16. Fisher GX 3-Way Actuator
Table 5. Actuator Specifications
Description
Operating Principle
Operating Pressure Ranges See tables 8 and 9
Ambient Temperature
Pressure Connection (Fail-Up Construction)
Finish Powder coat polyester
solenoids and limit switches.
Pneumatic spring-return diaphragm actuator
Fail-down (standard configuration)
Fail-up (optional configuration)
--46 to 82_C (--50 to 180_F)
G 1/4 internal casing connection
Table 6. Materials of Construction
Part
Upper and Lower Casings AISI 1010 stamped carbon steel
Springs Steel
Diaphragm NBR and nylon
Diaphragm Plate AISI 1010 stamped carbon steel
Yoke and Y oke Extension on HT Construction Carbon steel
Casing Fasteners
Actuator Rod Stainless steel
Stem Connector CF3M
Stem Connector Fasteners
Stem Bushing
Stem Seal NBR
14
A2-70 stainless steel bolts and nuts
SA193-B7 bolts with NCF2 coating
High-density polyethylene (HDPE)
Material
Product Bulletin
51.1:GX 3--Way
August 2011
GX 3--Way Valve and Actuator
Actuator Selection
GX ISO 5210 Electric Actuator
Mounting
With the GX 3-Way, actuator selection has never
been easier. Once the valve size has been
determined, the actuator is automatically selected.
The following tables provide the maximum allowable
pressure drops for the GX 3-Way.Seetable8for
Side Port Common construction and table 9 for
Bottom Port Common construction. For optimal
performance, the GX 3-Way should be operated with
a FIELDVUE digital valve controller.
Table 7. Fisher GX 3--Way Maximum Allowable Thrust for use with ISO 5210 Electric Actuators
(THRUST LIMITATIONS APPLY IN BOTH TRAVEL DIRECTIONS)
VALV E SI ZE
DN25--DN40
(NPS1to1--1/2)
DN50 (NPS 2) 14 19 S31603 14000 3150
DN80--DN100
(NPS3to4)
STEM DIAMETER TRAVEL
mm mm N lbf
10 19 S31603 6900 1550
14 38 S31603 14000 3150
Electric actuator mounting is available for any
manufacturing models that comply with ISO 5210,
Flange type F7. The mounting offering includes a
GX yoke, actuator rod adaptor, spacer, and bolting.
Thrust limitations apply when sizing electric
actuators (see table 7).
Mounting offering can be engineered if not already
available for a selected actuator. For additional
information, contact your Emerson Process
Management sales office.
STEM MATERIAL
MAXIMUM THRUST
15
GX 3--Way Valve and Actuator
Table 8. Maximum Allowable Pressure Drop (Side Port Common)
FAIL-DOWN FAIL-UP
VALV E
DN100 750
ACTUATOR
SIZE
DN25 225
DN40 225
DN50 750
DN80 750
SIZE
FLOW
DIRECTION
Converging
Diverging
Converging
Diverging
Converging
Diverging
Converging
Diverging
Converging
Diverging
PACKING
PTFE 18.1 21.7 21.7 21.7 21.7 bar @ 5.0 bar 19.7 20.2 20.2 20.2 20.2 bar @ 5.0 bar
ULF 12.2 16.2 16.2 16.2 16.2 bar @ 5.0 bar 14.2 14.3 14.3 14.3 14.3 bar @ 5.0 bar
PTFE 14.0 14.0 14.0 14.0 14.0 bar @ 5.0 bar 14.0 14.0 14.0 14.0 14.0 bar @ 5.0 bar
ULF 14.0 14.0 14.0 14.0 14.0 bar @ 5.0 bar 14.0 14.0 14.0 14.0 14.0 bar @ 5.0 bar
PTFE 18.1 21.7 21.7 21.7 21.7 bar @ 5.0 bar 19.7 20.2 20.2 20.2 20.2 bar @ 5.0 bar
ULF 12.2 16.2 16.2 16.2 16.2 bar @ 5.0 bar 14.2 14.3 14.3 14.3 14.3 bar @ 5.0 bar
PTFE 14.0 14.0 14.0 14.0 14.0 bar @ 5.0 bar 14.0 14.0 14.0 14.0 14.0 bar @ 5.0 bar
ULF 14.0 14.0 14.0 14.0 14.0 bar @ 5.0 bar 14.0 14.0 14.0 14.0 14.0 bar @ 5.0 bar
PTFE 29.0 48.4 48.4
ULF 25.8 45.5 45.5
PTFE 30.0 30.0 30.0
ULF 30.0 30.0 30.0
PTFE 10.5 19.0 24.2
ULF 9.2 17.7 23.0
PTFE 16.0 16.0 16.0
ULF 16.0 16.0 16.0
PTFE 6.3 11.3 14.7
ULF 5.5 10.5 13.9
PTFE 10.0 10.0 10.0
ULF 10.0 10.0 10.0
Operating Pressure
3
3.44
bar
bar4bar5bar
MAXDP@
Maximum Supply
Pressure
48.4 bar @ 4.0 bar 35.4 44.9 44.9
---
45.5 bar @ 4.0 bar 32.6 41.7 41.7
---
30.0 bar @ 4.0 bar 30.0 30.0 30.0
---
30.0 bar @ 4.0 bar 30.0 30.0 30.0
---
24.2 bar @ 4.0 bar 12.0 20.2 24.2
---
23.0 bar @ 4.0 bar 10.7 19.0 22.9
---
16.0 bar @ 4.0 bar 16.0 16.0 16.0
---
16.0 bar @ 4.0 bar 16.0 16.0 16.0
---
14.7 bar @ 4.0 bar 7.2 12.2 14.4
---
13.9 bar @ 4.0 bar 6.5 11. 5 13.6
---
10.0 bar @ 4.0 bar 10.0 10.0 10.0
---
10.0 bar @ 4.0 bar 10.0 10.0 10.0
---
3
bar
Operating Pressure
3.44
bar4bar5bar
Product Bulletin
51.1:GX 3--Way
August 2011
MAXDP@
Maximum Supply
Pressure
44.9 bar @ 4.0 bar
---
41.7 bar @ 4.0 bar
---
30.0 bar @ 4.0 bar
---
30.0 bar @ 4.0 bar
---
24.2 bar @ 4.0 bar
---
22.9 bar @ 4.0 bar
---
16.0 bar @ 4.0 bar
---
16.0 bar @ 4.0 bar
---
14.4 bar @ 4.0 bar
---
13.6 bar @ 4.0 bar
---
10.0 bar @ 4.0 bar
---
10.0 bar @ 4.0 bar
---
Table 9. Maximum Allowable Pressure Drop (Bottom Port Common)
FAIL-DOWN FAIL-UP
VALV E
DN100 750
ACTUATOR
SIZE
DN25 225
DN40 225
DN50 750
DN80 750
SIZE
FLOW
DIRECTION
Converging
Diverging
Converging
Diverging
Converging
Diverging
Converging
Diverging
Converging
Diverging
PACKING
PTFE 32.4 50.1 51.7 51.7 51.7 bar @ 5.0 bar 36.2 36.2 36.2 36.2 36.2 bar @ 5.0 bar
ULF 21.7 39.4 51.7 51.7 51.7 bar @ 5.0 bar 25.6 25.6 25.6 25.6 25.6 bar @ 5.0 bar
PTFE 28.0 28.0 28.0 28.0 28.0 bar @ 5.0 bar 28.0 28.0 28.0 28.0 28.0 bar @ 5.0 bar
ULF 28.0 28.0 28.0 28.0 28.0 bar @ 5.0 bar 28.0 28.0 28.0 28.0 28.0 bar @ 5.0 bar
PTFE 25.0 38.7 51.7 51.7 51.7 bar @ 5.0 bar 27.9 27.9 27.9 27.9 27.9 bar @ 5.0 bar
ULF 16.8 30.5 47.9 51.7 51.7 bar @ 5.0 bar 19.7 19.7 19.7 19.7 19.7 bar @ 5.0 bar
PTFE 22.0 22.0 22.0 22.0 22.0 bar @ 5.0 bar 22.0 22.0 22.0 22.0 22.0 bar @ 5.0 bar
ULF 22.0 22.0 22.0 22.0 22.0 bar @ 5.0 bar 22.0 22.0 22.0 22.0 22.0 bar @ 5.0 bar
PTFE 35.2 51.7 51.7
ULF 31.4 51.7 51.7
PTFE 30.0 30.0 30.0
ULF 30.0 30.0 30.0
PTFE 19.5 35.2 51.7
ULF 17.1 32.8 51.7
PTFE 25.0 25.0 25.0
ULF 25.0 25.0 25.0
PTFE 19.5 35.2 51.7
ULF 17.1 32.8 51.7
PTFE 25.0 25.0 25.0
ULF 25.0 25.0 25.0
Operating Pressure
3
3.44
bar
bar4bar5bar
---
---
---
---
---
---
---
---
---
---
---
---
MAXDP@
Maximum Supply
Pressure
51.7 bar @ 4.0 bar 51.7 51.7 51.7
51.7 bar @ 4.0 bar 50.7 50.7 50.7
30.0 bar @ 4.0 bar 30.0 30.0 30.0
30.0 bar @ 4.0 bar 30.0 30.0 30.0
51.7 bar @ 4.0 bar 45.0 45.0 45.0
51.7 bar @ 4.0 bar 42.6 42.6 42.6
25.0 bar @ 4.0 bar 25.0 25.0 25.0
25.0 bar @ 4.0 bar 25.0 25.0 25.0
51.7 bar @ 4.0 bar 45.0 45.0 45.0
51.7 bar @ 4.0 bar 42.6 42.6 42.6
25.0 bar @ 4.0 bar 25.0 25.0 25.0
25.0 bar @ 4.0 bar 25.0 25.0 25.0
Operating Pressure
3
3.44
bar
bar4bar5bar
Maximum Supply
51.7 bar @ 4.0 bar
---
50.7 bar @ 4.0 bar
---
30.0 bar @ 4.0 bar
---
30.0 bar @ 4.0 bar
---
45.0 bar @ 4.0 bar
---
42.6 bar @ 4.0 bar
---
25.0 bar @ 4.0 bar
---
25.0 bar @ 4.0 bar
---
45.0 bar @ 4.0 bar
---
42.6 bar @ 4.0 bar
---
25.0 bar @ 4.0 bar
---
25.0 bar @ 4.0 bar
---
MAXDP@
Pressure
16
Product Bulletin
51.1:GX 3--Way
August 2011
GX 3--Way Valve and Actuator
Valve-Actuator Dimensions and Weights
See figure 17, table 10, and table 11.
Table 10. Fisher GX 3-Way Dimensions and Weights (Standard and HT Constructions)
VALV E
SIZE
DN 25/
NPS 1
DN 40/
NPS
1-1/2
DN 50/
NPS 2
DN 80/
NPS 3
DN 100/
NPS 4
PORT DIA
TYPE
BPC 29 36
SPC 36 36
BPC 39 46
SPC 36 36
BPC 61 70
SPC 46 46
BPC 78 90
SPC 70 70
BPC 78 90
SPC 90 90
Upper Lower
mm mm mm mm mm mm mm mm mm mm
ACTUATOR
SIZE
225 19 197 184 197 98.5 92 98.5 73
225 19 235 222 235 117.5 111 117.5 76
750 19 267 254 267 133.5 127 133.5 95
750 38 318 298 318 159 149 159 119
750 38 368 352 368 184 176 184 119
TRAVEL
PN10 -
PN40
Table 11. Fisher GX 3-Way Dimensions and Weights
D (Actuator Height) E F (AR) TOTAL WEIGHT
VALV E SI ZE
DN 25/ NPS 1 313 418 270 115 26 30
DN 40/ NPS 1-1/2
DN 50/ NPS 2 342 485 430 120 66 74
DN 80/ NPS 3 395 585 430 145 97 112
DN 100/ NPS 4 395 585 430 145 123 138
1. Clearance required for removing actuator from installed valve body.
Std Construction HT Construction Casing Dia
mm mm mm mm kg kg
313 422 270 11 5 28 32
A B C
CL150 CL300
Removal Height
PN10 -
PN40
(1)
CL150 CL300 Bonnet
Std Construction HT Construction
AR
AR
E
D
F
C
B
A/2
A
GE54802
D
F
F
C
B
A/2
E
A
STANDARD CONSTRUCTION HT (HIGH TEMPERATURE) CONSTRUCTION
Figure 17. Fisher GX 3-Way Dimensions (also see tables 10 and 11)
17
Product Bulletin
GX 3--Way Valve and Actuator
Table 12. Fisher GX 3-Way Electric Actuator Mounting Dimensions and Weights
G H
VALV E SI ZE
DN 25/ NPS 1 202 176 17 21
DN 40/ NPS 1-1/2
DN 50/ NPS 2 202 176 29 37
DN 80/ NPS 3 222 176 57 72
DN 100/ NPS 4 226 176 83 98
Electric Actuator Yoke Height
ISO 5210
mm mm kg kg
202 176 19 23
G
Yoke Diameter Std Construction HT Construction
H
GX ELECTRIC ACTUATOR MOUNTING ASSEMBLY
TOTAL WEIGHT,
51.1:GX 3--Way
August 2011
18
GE54756_1
Figure 18. Fisher GX 3-Way Electric Actuator Mounting Dimensions (also see table 12)
Product Bulletin
51.1:GX 3--Way
August 2011
Table 13. Positioner Selection Guidelines
Type Digital I/P
DVC2000 X X X
DVC6200 X X X X
3661 X X X
3660 X
1. Digital I/P - microprocessor based electro-pneumatic with HART communication.
2. I/P - electro-pneumatic
3. P/P - pneumatic
4. Refer to Fisher bulletin 9.2:001 for instrument hazardous area classification details.
(1)
I/P
(2)
P/P
GX 3--Way Valve and Actuator
(3)
Intrinsic
(4)
Safety
Flameproof /
Explosion Proof
(4)
Incendive
GX 3-Way Actuator Accessories
The GX 3-Way is available with a variety of
pneumatic (P/P), electro-pneumatic (I/P), and digital
valve positioners, as well as limit switches and
solenoids. Table 13 provides the basic features of
the positioners offered with the GX 3-Way actuator.
Non-
(4)
The FIELDVUE DVC2000 Digital Valve
Controller
The DVC2000 digital valve controller (figure 19) is
simple to use, compact, and designed for the GX
3-Way control valve. It converts a 4-20mA input
signal into a pneumatic output signal, which feeds
the control valve actuator. Instrument setup is
performed with a pushbutton and liquid crystal
display (LCD) interface. This interface is protected
from the environment within an IP66 enclosure.
Multiple languages are supported with the local
interface including German, French, Italian, Spanish,
Chinese, Japanese, Portuguese, Russian, Polish,
Czech, Arabic, and English. Additionally, HARTr
communication is supported over the 4-20mA loop
wiring.
The DVC2000 is designed to be integrally mounted
to the GX 3-Way actuator, avoiding the need for
mounting brackets. The DVC2000 mounts directly to
an interface pad on the actuator yoke leg with a
secure 3-point mounting. An internal passage inside
the yoke leg transmits the pneumatic signal to the
actuator casing, eliminating the need for e xternal
tubing (in the fail-down configuration).
W8755
Figure 19. FIELDVUE DVC2000 Digital Valve Controller
The high-performance linkage-less position feedback
system eliminates physical contact between the
valve stem and the digital valve controller or
instrument. There are no wearing parts so cycle life
is maximized. Additionally, the elimination of levers
and linkages reduces the number of mounting parts
and the mounting complexity. Digital valve controller
or instrument replacement and maintenance is
simplified because the feedback parts stay
connected to the actuator.
The DVC2000 is available with an optional module
which includes two (2) integral limit switches and a
stem position transmitter. The limit switches are
configurable for open and closed valve indication.
The position transmitter provides a 4-20mA signal for
valve position feedback verification. As an integral
component to the instrument, this option module
avoids the need for difficult-to-mount external
switches and transmitters.
Designed to meet intrinsic safety and non-incendive
requirements, this instrument delivers scalable
functionality and high performance in a small
package.
19
GX 3--Way Valve and Actuator
Optional Positioners and Instruments
3660 and 3661 Valve Positioners
The 3660 pneumatic and 3661 electro-pneumatic
positioners are rugged, accurate, and feature low
steady-state air consumption. Designed to meet
intrinsic safety requirements, these positioners offer
simple functionality in a small package.
(See table 13.)
DVC6200 Digital Valve Controller
The DVC6200 digital valve controller is a
communicating, microprocessor-based
current--to--pneumatic instrument. Using HART or
OUNDATIONt fieldbus communication protocol,
F
access to critical instrument, valve, and process
conditions is provided. When used with ValveLinkt
software, valve diagnostic tests can be run while the
valve is in service to advise you of the performance
of the entire control valve assembly. Designed to
meet a broad range of hazardous area
classifications, this instrument offers maximum
functionality to improve your process performance.
(See figure 20 and table 13.)
Product Bulletin
51.1:GX 3--Way
August 2011
W9713
Figure 20. FIELDVUE DVC6200 Digital Valve Controller
Note
Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use, or maintenance of any
product. Responsibility f or the
selection, use, and maintenance of any
product remains with the purchaser
and end user.
20
Product Bulletin
51.1:GX 3--Way
August 2011
Coefficients
Table 14. Fisher GX 3--Way , Side Port Common (SPC) Diverging, Linear
Side Port Common (SPC) Diverging
Maximum
Valve
Size
DN25/
NPS 1
DN40/
NPS
1--1/2
DN50/
NPS 2
DN80/
NPS 3
DN100/
NPS 4
1. At maximum flow.
Travel
mm
19
19
19
38
38
Exit Port
(see
figure 5)
Right
Bottom
Right
Bottom
Right
Bottom
Right
Bottom
Right
Bottom
Flow
Coeffi-
cient
Cv 16.1 15.0 14.2 13.5 12.6 11.1 9.35 7.21 5.27 2.89 0 0.919
Kv 14.0 13.0 12.3 11 .7 10.9 9.56 8.09 6.23 4.56 2.50 0 -- -- --
Xt 0.615 0.543 0.427 0.308 0.250 0.226 0.203 0.148 0.119 0.097 0 -- -- --
Cv 0 0.897 2.43 4.29 6.06 7.81 9.78 11.6 13.3 15.0 15.6 0.951
Kv 0 0.776 2.10 3.71 5.25 6.75 8.46 10.0 11. 5 13.0 13.5 -- -- --
Xt 0 0.899 0.687 0.654 0.698 0.673 0.622 0.700 0.706 0.702 0.758 -- -- --
Cv 25.4 22.4 20.5 17.7 15.8 14.2 11 .9 9.27 6.93 4.09 0 0.991
Kv 22.0 19.4 17.7 15.3 13.7 12.3 10.3 8.01 6.00 3.54 0 -- -- --
Xt 0.831 0.882 0.741 0.697 0.565 0.501 0.450 0.389 0.341 0.285 0 -- -- --
Cv 0 2.33 4.45 7.45 10.6 13.6 16.9 19.2 21.7 23.4 26.6 0.877
Kv 0 2.01 3.84 6.45 9.18 11.8 14.6 16.6 18.8 20.2 23.0 -- -- --
Xt 0 0.245 0.636 0.722 0.723 0.720 0.655 0.685 0.705 0.843 0.803 -- -- --
Cv 43.9 40.2 35.8 31.1 26.5 23.1 18.7 15.1 11. 1 6.78 0 0.973
Kv 38.0 34.7 30.9 26.9 22.9 20.0 16.2 13.1 9.63 5.87 0 -- -- --
Xt 0.864 0.817 0.767 0.656 0.598 0.533 0.536 0.429 0.333 0.215 0 -- -- --
Cv 0 2.66 7.61 13.2 18.1 23.5 29.3 34.9 41.6 48.1 52.2 0.831
Kv 0 2.30 6.58 11. 4 15.6 20.3 25.4 30.2 36.0 41.6 45.1 -- -- --
Xt 0 0.614 0.651 0.649 0.651 0.627 0.609 0.599 0.588 0.600 0.640 -- -- --
Cv 92.8 85.2 70.3 57.6 47.5 39.2 31.6 25.1 19.7 13.8 0 1.000
Kv 80.3 73.7 60.8 49.8 41.1 33.9 27.3 21.8 17.0 11.9 0 -- -- --
Xt 0.858 0.989 0.976 0.934 0.896 0.864 0.789 0.682 0.540 0.306 0 -- -- --
Cv 0 9.03 20.4 30.3 41.0 52.1 60.1 69.1 79.4 90.6 101.9 0.839
Kv 0 7.81 17.7 26.2 35.4 45.1 52.0 59.8 68.7 78.3 88.1 -- -- --
Xt 0 0.557 0.695 0.814 0.795 0.790 0.876 0.929 0.937 0.932 0.855 -- -- --
Cv 145.4 137.4 119.9 100.6 81.6 68.3 57.6 45.5 33.9 21.1 0 0.942
Kv 125.8 118.9 103.7 87.0 70.6 59.1 49.9 39.4 29.3 18.2 0 -- -- --
Xt 0.984 0.956 0.975 0.828 0.817 0.810 0.705 0.601 0.475 0.322 0 -- -- --
Cv 0 15.0 37.7 58.7 79.9 99.3 122.3 143.7 166.0 189.3 216.4 0.818
Kv 0 13.0 32.6 50.8 69.1 85.9 105.8 124.3 143.6 163.8 187.2 -- -- --
Xt 0 0.587 0.659 0.764 0.798 0.840 0.887 0.880 0.869 0.810 0.640 -- -- --
0
(Plug Down)
Valve Opening—Percent of Total Travel (see figure 6)
10 20 30 40 50 60 70 80 90
GX 3--Way Valve and Actuator
Linear
Characteristic
(1)
F
100
(Plug Up)
L
21
GX 3--Way Valve and Actuator
Table 15. Fisher GX 3--Way, Side Port Common (SPC) Converging, Linear
Side Port Common (SPC) Converging
Maximum
Valve
Size
DN25/
NPS 1
DN40/
NPS
1--1/2
DN50/
NPS 2
DN80/
NPS 3
DN100/
NPS 4
1. At maximum flow.
Travel
mm
19
19
19
38
38
Inlet Port
(see
figure 7)
Right
Bottom
Right
Bottom
Right
Bottom
Right
Bottom
Right
Bottom
Flow
Coeffi-
cient
Cv 15.9 13.2 10.7 9.30 7.54 6.31 4.65 3.64 2.04 1.04 0 0.978
Kv 13.7 11. 4 9.28 8.04 6.52 5.46 4.02 3.15 1.77 0.898 0 -- -- --
Xt 0.658 0.866 0.758 0.657 0.723 0.669 0.739 0.728 0.909 0.898 0 -- -- --
Cv 0 0.562 1.72 3.28 4.90 6.51 8.74 10.3 12.9 14.3 16.3 0.949
Kv 0 0.486 1.49 2.84 4.24 5.63 7.56 8.89 11. 1 12.4 14.1 -- -- --
Xt 0 0.397 1.005 0.966 0.847 0.767 0.675 0.659 0.605 0.662 0.663 -- -- --
Cv 29.3 26.7 23.0 17.1 14.6 11.9 9.47 7.07 4.78 2.34 0 0.999
Kv 25.3 23.1 19.9 14.8 12.6 10.3 8.19 6.12 4.13 2.03 0 -- -- --
Xt 0.821 0.714 0.711 0.857 0.806 0.900 0.907 0.803 0.842 0.660 0 -- -- --
Cv 0 0.881 3.02 6.46 8.83 11. 7 15.9 18.3 20.9 24.3 28.4 0.978
Kv 0 0.762 2.61 5.58 7.64 10.1 13.7 15.8 18.1 21.1 24.5 -- -- --
Xt 0 -- -- -- 0.994 0.779 0.865 0.832 0.679 0.745 0.752 0.785 0.749 -- -- --
Cv 54.6 48.5 42.2 35.2 28.5 22.9 18.0 12.4 7.44 3.02 0 0.932
Kv 47.2 42.0 36.5 30.4 24.6 19.8 15.6 10.7 6.43 2.61 0 -- -- --
Xt 0.626 0.636 0.596 0.559 0.574 0.605 0.617 0.685 0.798 0.949 0 -- -- --
Cv 0 2.05 6.44 11. 0 15.8 20.9 25.6 32.2 41.6 47.6 52.0 0.958
Kv 0 1.78 5.57 9.50 13.7 18.1 22.2 27.9 36.0 41.2 45.0 -- -- --
Xt 0 0.888 0.919 0.958 0.895 0.844 0.859 0.804 0.735 0.745 0.785 -- -- --
Cv 111.9 101.0 87.8 72.7 59.2 48.3 38.5 28.5 18.9 9.87 0 1.000
Kv 96.8 87.4 75.9 62.9 51.2 41.8 33.3 24.7 16.4 8.53 0 -- -- --
Xt 0.811 0.757 0.669 0.704 0.755 0.765 0.745 0.723 0.725 0.716 0 -- -- --
Cv 0 6.84 16.1 26.4 40.0 55.0 70.4 85.7 100.8 113.1 127.8 0.965
Kv 0 5.91 13.9 22.8 34.6 47.6 60.9 74.1 87.2 97.8 110.6 -- -- --
Xt 0 0.989 0.967 0.994 0.876 0.800 0.773 0.759 0.752 0.767 0.752 -- -- --
Cv 163.4 153.0 137.0 115.0 92.0 74.0 57.8 43.5 28.3 12.8 0 0.869
Kv 141.4 132.3 118.5 99.4 79.6 64.0 50.0 37.7 24.5 11 .1 0 -- -- --
Xt 0.688 0.634 0.558 0.558 0.603 0.610 0.595 0.578 0.573 0.525 0 -- -- --
Cv 0 12.9 30.1 46.6 66.3 88.4 112.4 135.9 161.4 185.2 212.2 0.816
Kv 0 11 .2 26.0 40.3 57.3 76.4 97.2 117.5 139.7 160.2 183.6 -- -- --
Xt 0 0.920 0.949 0.826 0.789 0.737 0.683 0.660 0.625 0.629 0.589 -- -- --
0
(Plug Down)
Valve Opening—Percent of Total Travel (see figure 8)
10 20 30 40 50 60 70 80 90
Product Bulletin
51.1:GX 3--Way
August 2011
Linear
Characteristic
(1)
F
100
(Plug Up)
L
22
Product Bulletin
51.1:GX 3--Way
August 2011
Table 16. Fisher GX 3--Way , Bottom Port Common (BPC) Diverging, Linear
GX 3--Way Valve and Actuator
Bottom Port Common (BPC) Diverging
Maximum
Valve
Size
DN25/
NPS 1
DN40/
NPS
1--1/2
DN50/
NPS 2
DN80/
NPS 3
DN100/
NPS 4
1. At maximum flow.
Travel
mm
19
19
19
38
38
Exit Port
(see
figure 9)
Right
Left
Right
Left
Right
Left
Right
Left
Right
Left
Flow
Coeffi-
cient
Cv 16.3 15.5 14.4 13.3 12.0 10.1 7.72 5.32 3.18 1.49 0 0.965
Kv 14.1 13.4 12.5 11 .5 10.4 8.70 6.68 4.61 2.75 1.29 0 -- -- --
Xt 0.661 0.670 0.691 0.655 0.608 0.577 0.523 0.556 0.533 0.474 0 -- -- --
Cv 0 1.67 3.03 4.58 6.32 8.41 10.6 12.0 13.7 14.7 15.5 0.886
Kv 0 1.45 2.62 3.96 5.46 7.27 9.18 10.4 11. 9 12.8 13.4 -- -- --
Xt 0 0.810 0.623 0.667 0.639 0.620 0.637 0.631 0.637 0.664 0.666 -- -- --
Cv 32.5 30.5 28.7 25.2 21.9 18.5 14.8 10.6 6.46 2.89 0 0.820
Kv 28.1 26.4 24.8 21.8 18.9 16.0 12.8 9.16 5.58 2.50 0 -- -- --
Xt 0.786 0.738 0.661 0.626 0.523 0.486 0.470 0.467 0.479 0.426 0 -- -- --
Cv 0 3.30 6.21 10.34 14.5 18.2 22.7 26.4 29.1 31.2 33.5 0.923
Kv 0 2.85 5.37 8.94 12.56 15.7 19.7 22.9 25.1 27.0 29.0 -- -- --
Xt 0 0.812 0.661 0.502 0.553 0.660 0.721 0.764 0.799 0.815 0.784 -- -- --
Cv 58.9 53.1 47.1 40.7 34.1 27.0 20.7 14.6 9.54 4.61 0 0.950
Kv 50.9 45.9 40.7 35.2 29.5 23.4 17.9 12.6 8.26 3.99 0 -- -- --
Xt 0.600 0.639 0.561 0.574 0.536 0.473 0.475 0.508 0.501 0.536 0 -- -- --
Cv 0 4.89 8.60 13.4 20.5 28.2 36.6 44.9 50.9 56.0 60.0 0.893
Kv 0 4.23 7.43 11. 6 17.8 24.4 31.7 38.8 44.0 48.4 51.9 -- -- --
Xt 0 0.553 0.674 0.610 0.575 0.599 0.598 0.607 0.632 0.647 0.619 -- -- --
Cv 155.9 151.9 139.6 126.6 108.8 90.8 69.0 49.0 30.8 15.1 0 0.935
Kv 134.9 131.4 120.7 109.5 94.1 78.5 59.7 42.4 26.6 13.1 0 -- -- --
Xt 0.640 0.595 0.578 0.532 0.500 0.451 0.453 0.462 0.471 0.465 0 -- -- --
Cv 0 12.0 27.7 47.9 68.3 87.7 104.5 120.0 136.5 154.7 170.3 0.862
Kv 0 10.4 24.0 41.4 59.1 75.8 90.4 103.8 118.1 133.8 147.3 -- -- --
Xt 0 0.605 0.556 0.596 0.650 0.680 0.706 0.719 0.713 0.664 0.642 -- -- --
Cv 166.3 152.9 139.7 121.1 98.0 77.1 60.3 42.9 27.0 13.0 0 0.901
Kv 143.9 132.3 120.8 104.8 84.8 66.7 52.2 37.1 23.3 11.2 0 -- -- --
Xt 0.675 0.631 0.533 0.510 0.530 0.526 0.503 0.520 0.520 0.542 0 -- -- --
Cv 0 11.3 26.9 46.1 63.8 82.2 102.0 121.1 137.6 153.2 169.1 0.866
Kv 0 9.8 23.2 39.9 55.2 71.1 88.2 104.8 119.0 132.5 146.3 -- -- --
Xt 0 0.657 0.583 0.615 0.704 0.727 0.716 0.696 0.723 0.703 0.669 -- -- --
0
(Plug Down)
Valve Opening—Percent of Total Travel (see figure 10)
10 20 30 40 50 60 70 80 90
Characteristic
100
(Plug Up)
Linear
(1)
F
L
23
GX 3--Way Valve and Actuator
Table 17. Fisher GX 3--Way, Bottom Port Common (BPC) Converging, Linear
Bottom Port Common (BPC) Converging
Maximum
Valve
Size
DN25/
NPS 1
DN40/
NPS
1--1/2
DN50/
NPS 2
DN80/
NPS 3
DN100/
NPS 4
1. At maximum flow.
Travel
mm
19
19
19
38
38
Inlet Port
(see
figure 11)
Right
Left
Right
Left
Right
Left
Right
Left
Right
Left
Flow
Coeffi-
cient
Cv 16.4 14.4 12.8 11.7 10.7 9.64 8.58 6.27 3.80 1.08 0 0.973
Kv 14.2 12.4 11 .1 10.1 9.23 8.34 7.42 5.42 3.29 0.93 0 -- -- --
Xt 0.668 0.650 0.691 0.571 0.495 0.397 0.324 0.312 0.291 0.652 0 -- -- --
Cv 0 1.45 2.56 3.93 5.46 7.08 8.83 10.9 13.3 15.3 16.5 0.935
Kv 0 1.25 2.22 3.40 4.73 6.12 7.64 9.39 11. 5 13.2 14.3 -- -- --
Xt 0 0.702 0.784 0.725 0.720 0.710 0.722 0.717 0.678 0.609 0.597 -- -- --
Cv 36.8 32.3 25.6 21.3 17.5 12.5 10.3 8.22 4.63 2.34 0 0.804
Kv 31.9 28.0 22.1 18.4 15.1 10.8 8.94 7.11 4.00 2.02 0 -- -- --
Xt 0.540 0.538 0.675 0.661 0.613 0.723 0.690 0.575 0.595 0.634 0 -- -- --
Cv 0 3.36 5.99 9.42 13.3 17.4 22.4 27.4 33.8 37.5 41.5 0.878
Kv 0 2.91 5.18 8.15 11. 5 15.0 19.4 23.7 29.2 32.5 35.9 -- -- --
Xt 0 0.625 0.659 0.593 0.598 0.645 0.637 0.695 0.643 0.641 0.603 -- -- --
Cv 59.9 50.9 42.8 35.6 29.6 23.1 17.5 13.8 9.75 6.01 0 0.882
Kv 51.8 44.0 37.0 30.8 25.6 20.0 15.2 11 .9 8.43 5.20 0 -- -- --
Xt 0.560 0.569 0.609 0.634 0.611 0.613 0.571 0.490 0.387 0.256 0 -- -- --
Cv 0 4.84 8.90 14.2 19.2 25.4 32.8 40.0 47.1 53.4 57.8 0.935
Kv 0 4.19 7.70 12.3 16.6 21.9 28.4 34.6 40.7 46.2 50.0 -- -- --
Xt 0 0.504 0.575 0.549 0.641 0.692 0.696 0.693 0.707 0.722 0.723 -- -- --
Cv 158.7 142.5 125.3 102.8 80.3 61.0 45.8 33.1 20.8 10.6 0 0.813
Kv 137.2 123.3 108.4 88.9 69.5 52.8 39.6 28.7 18.0 9.18 0 -- -- --
Xt 0.558 0.578 0.553 0.549 0.600 0.663 0.665 0.653 0.714 0.705 0 -- -- --
Cv 0 12.1 25.7 43.8 63.1 83.1 102.7 120.4 135.7 151.1 164.9 0.931
Kv 0 10.5 22.2 37.9 54.6 71.9 88.9 104.1 117.4 130.7 142.6 -- -- --
Xt 0 0.525 0.579 0.619 0.660 0.658 0.676 0.685 0.701 0.691 0.670 -- -- --
Cv 155.9 145.0 127.4 107.6 85.9 66.4 49.4 35.6 23.6 12.2 0 0.810
Kv 134.9 125.4 110.2 93.0 74.3 57.5 42.7 30.8 20.4 10.5 0 -- -- --
Xt 0.564 0.550 0.518 0.504 0.545 0.593 0.628 0.621 0.601 0.553 0 -- -- --
Cv 0 13.5 28.9 48.9 69.5 90.6 111.1 129.2 145.4 159.9 174.4 0.830
Kv 0 11 .7 25.0 42.3 60.1 78.4 96.1 111.8 125.8 138.3 150.8 -- -- --
Xt 0 0.427 0.477 0.525 0.553 0.564 0.590 0.637 0.667 0.686 0.676 -- -- --
0
(Plug Down)
Valve Opening—Percent of Total Travel (see figure 12)
10 20 30 40 50 60 70 80 90
Product Bulletin
51.1:GX 3--Way
August 2011
Linear
Characteristic
(1)
F
100
(Plug Up)
L
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24
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