Fisher GX 3 Way Control Valve and Actuator System

1 GX 3-Way Control Valve and Actuator SystemThe Fisher GX 3-Way is a compact, state-of-the-artcontrol Valve and Actuator System , designed toaccurately Control water, oils, steam , and otherindustrial fluids. The robust GX 3-way Valve package isperfectly suited to address the space limitations of theOEM GX 3-Way is rugged, reliable, and easy to internal Valve trim is designed to ensure longservice life and avoiding unnecessary same construction may be used for bothconverging and diverging GX 3-Way meets the requirements of both EN andASME standards. It is available with a completeaccessory package, including the FIELDVUE DVC2000and FIELDVUE DVC6200 integrated digital GX 3-Way trim characteristics are designed foraccurate temperature Control in heat Side-Port Common (SPC)--The side flange is thecommon pipe connection for general converging(flow-mixing) and diverging (flow-splitting) service(see figure 4).

2 Utilizes an unbalanced plug Bottom-Port Common (BPC)--A balanced designused for high pressure drop applications. Thebottom flange is the common pipe connection forboth converging and diverging service (see figures 8and 10).n High-Temperature Side-Port Common (SPC)-- Theside flange is the common pipe connection forgeneral converging (flow-mixing) and diverging(flow-splitting) service (see figure 2). Utilizes anunbalanced plug design, a stem extension, a yokeextension, and includes ENVIRO-SEAL graphiteULF packing (figure 14) and a hard-faced seat GX 3-Way High-Temperature Control Valve andActuatorW9557GE49204X0176 Fisher GX 3-Way Control Valve , Actuator , and FIELDVUEDVC2000 Digital Valve ControllerGX 3-Way Valve and ActuatorD103305X012 Product :GX 3-WayAugust 2017GX 3-Way Valve and ActuatorD103305X012 Product :GX 3-WayAugust 2017 2 Figure 1.

3 Fisher GX 3-Way Control Valve Assembly with Port-Guided Contoured Plug (Side Port Common)COMPACT FIELD-REVERSIBLEMULTI-SPRING ACTUATORINTEGRATED POSITIONERMOUNTINGNAMUR POSITIONERMOUNTING CAPABILITYONE-PIECE SCREWEDPACKING FOLLOWERCLAMPED BONNET DESIGNSTANDARD ENVIRO-SEAL PACKINGW9578-1 Figure 2. Fisher GX 3-Way High-Temperature Control Valve Assembly with Port-Guided Contoured Plug (Side PortCommon)COMPACT FIELD-REVERSIBLEMULTI-SPRING ACTUATORINTEGRATED POSITIONERMOUNTINGNAMUR POSITIONERMOUNTING CAPABILITYONE-PIECE SCREWEDPACKING FOLLOWERCLAMPED BONNET DESIGNSTANDARD ENVIRO-SEAL GRAPHITE ULF PACKINGX0094-1 HARD-FACED SEAT AND GUIDESURFACES ON SEAT RINGSTEM EXTENSIONYOKE EXTENSIONGRAPHITE SEAL RINGGX 3-Way Valve and ActuatorD103305X012 Product.

4 GX 3-WayAugust 2017 3 Featuresn Easy to size and selectn No Actuator sizing required--selection is automaticn Engineered for easy maintenancen Maximum part commonality across sizesn Replaceable trimn Low lifetime costsn Robust, low-profile designn Available with integrated, easy-to-calibrate DVC2000 or DVC6200 digital Valve controllern Valve body sizes DN 25 to DN 100 (NPS 1 through 4)n Pressure Classes PN 10-40, CL150 and 300n High capacity designn Valve body flow passage optimized for flow stabilityn Shutoff capabilities: Class IV metal to metaln ISO 5210 F7 mounting available for use with electric actuatorsContentsFeatures of Operation 3-Way Control Valve Specificationsand Materials of Construction GX 3-Way Diaphragm Actuator Dimensions and Weights 3-Way Actuator Accessories FIELDVUE DVC2000 Digital Valve Controller Positioners and Instruments 3-Way Valve and ActuatorD103305X012 Product :GX 3-WayAugust 2017 4 Figure 3.

5 Fisher GX 3-Way and FIELDVUE DVC2000 Digital Valve ControllerLINKAGE-LESS POSITIONFEEDBACKPUSH-BUTTON INSTRUMENT SETUPDVC2000 COVERINTEGRAL PNEUMATICPASSAGEWAYSO ptimized Valve and Actuator System . Productsimplicity and ease of selection form the foundation ofthe GX 3-Way. Mounted with a digital or analogpositioner, the GX 3-Way provides high performancecontrol across a wide range of process Actuator design. The multi-spring GX 3-Wayactuator is a compact robust design. The GX 3-Waydesign has been optimized to eliminate complicated3-way Actuator sizing procedures - once the Valve bodyand port size are selected, the Actuator size is Actuator Performance.

6 Special actuatordiaphragm material helps reduce common problemssuch as air oxidation, thermal aging, low temperatureembrittlement, and loss of retention (see table 6). Thedouble-sided diaphragm within the Actuator helpseliminate mechanical wear-induced design. The design architecture has beenoptimized to maximize the use of common partsacross sizes. The Actuator stem and stem connectorare used across all GX 3-Way lifetime costs. Reduced product complexity, lowparts count, and part commonality all contribute toreduced inventory and maintenance flow Control . The flow cavity of the GX 3-Wayvalve body has been engineered to provide stable flowand reduce process variability.

7 This linear stability forboth converging and diverging flow is perfectly suitedfor temperature and pH Control Requirements ENVIRO-SEAL packingsystems provide an improved stem seal to helpprevent the loss of valuable or hazardous process GX 3-Way comes standard with ENVIRO-SEAL PTFE packing. ENVIRO-SEAL graphite ULF packing is alsoavailable for all sizes and is standard on hightemperature maintenance. The simple screwed seat-ring andone-piece plug and stem design provide easymaintenance. Design simplicity and partscommonality contribute to reduced spares integrated DVC2000 and DVC6200 digital valvecontrollers allow easy instrument removal, without aGX 3-Way Valve and ActuatorD103305X012 Product :GX 3-WayAugust 2017 5requirement for tubing disconnection or replacement(fail-down construction).

8 Digital Valve controller. The GX 3-Way is available withthe DVC2000 digital Valve controller. The DVC2000 iseasy to use, compact, and designed for easymounting. It converts a 4-20 mA input signal into apneumatic output signal, which feeds the Control valveactuator. Instrument setup is performed with a pushbutton and LCD interface. This interface is protectedfrom the environment within a sealed enclosure. Theinterface supports multiple languages, includingGerman, French, Italian, Spanish, Chinese, Japanese,Portuguese, Russian, Polish, Czech, Arabic, safety and non-incendive construction isavailable to CSA, FM, ATEX, and IEC standards.

9 Anoptional module provides integrated limit switchesand a position mounting. The DVC2000 and DVC6200digital Valve controllers integrally mount to the GX3-Way Actuator , eliminating the need for mountingbrackets. The DVC2000 transmits a pneumatic signalto the Actuator casing via an air passage in the yokeleg, causing the Valve to stroke (see figure 12). Thiseliminates the need for positioner-to- Actuator tubingin the fail-down DVC2000 and DVC6200 mounting interfaces areidentical on both sides of the Actuator yoke for valvebody sizes DN 25 through DN 100 (NPS 1 through 4).This symmetrical design allows the DVC2000 to beeasily moved from one side of the Valve to the otherwithout the need to rotate the feedback.

10 The DVC2000 and DVC6200digital Valve controllers offer as standard anon-contacting Valve position feedback System . This isa true linkage-less design, which uses no levers and notouching parts between the Valve stem and Accessory selection. The GX 3-Way isavailable with a variety of digital or analog positionersbesides the DVC2000 or DVC6200, as well as solenoidand limit switches. The Actuator is also compatiblewith the IEC 60534-6-1 (NAMUR) positioner 3-Way Valve and ActuatorD103305X012 Product :GX 3-WayAugust 2017 6 Flow Directions -- Side Port Common ConstructionsFigure 4. Side Port Common Construction Details for Diverging ConstructionsSEAT RINGVALVE PLUGO-RINGBONNETRIGHT PORTBOTTOM PORTDIVERGINGLEFT PORT(COMMON PORT)W9580-1 Figure 5.