Key Specifications / Parameters
Parameter Description / Value
Product Name & Series Fisher GX Control Valve & Actuator System
Valve Size NPS 1 (1‑inch nominal pipe size)
Valve Type Single‑port globe‑style, sliding‑stem control valve
Flow Direction Normally “flow‐up” (in standard trim) for many sizes
Flow Characteristics Equal‑percentage or linear trim options
Shut‑off Class Metal‑to‑metal seating standard (Class IV), optional Class V or PTFE soft seat for Class VI
Body Pressure Ratings For GX series: ASME Class 150 / Class 300 (for NPS sizes including 1)
End Connections Raised‑face flanged per ASME B16.5 (for NPS sizes)
Materials Standard: carbon steel or stainless steel body/bonnet. Alloy options available for corrosive service
Trim and Seat Options Metal‑to‐metal, soft‑seat PTFE, hard‑faced/stellite for erosive service
Special Features Balanced or unbalanced plug designs depending on size and pressure drop; actuator integrated; live‑loaded packing; optional bellows for tight stem sealing
Application Range Liquids, gases, vapors; general service, corrosive service, low‑flow, noise/cavitation control etc.
Valve Sizes (GX family) NPS ½, ¾, 1, 1½, 2, 3, 4, 6 (GX family covers this range)
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