Key Specifications / Parameters Valve Series: Fisher GX Control Valve & Actuator System Valve Body Size: DN 50 (nominal 50 mm) Pressure Rating: PN 40 (per EN standard) for body/flange construction. The GX series supports classes up to PN 40 in EN ratings. End Connections: Flanged, raised face (EN 1092‑1) for the PN 40 version; butt‑weld or socket weld end variants may also exist in certain builds Flow Characteristics: Equal‑percentage or linear trim selections available; special trims (micro‑flow, low‑flow, noise/cavitation control) optional Shut‑off Class: Standard metal‑to‑metal seat = Class IV; optional upgrades to Class V (metal seat) or Class VI (soft seat) Materials of Construction: Body/bonnet options include carbon steel, stainless steel and alloy materials; trim/seat options include metal‑hard faces or soft seats depending on service Service Capabilities: General service (liquid, vapor, gas), corrosive service, low‑flow applications, noise/cavitation mitigation; standard live‑loaded packing; optional extension bonnets for high temperature or cryogenic service Actuator/Accessory: GX actuator is a compact multi‑spring pneumatic type integrated with valve body; automated sizing so once body construction selected, actuator size is fixed; digital valve controller option (FIELDVUE) available Face‑to‑Face / Dimensions: Compliant with EN/ISA/ANSI standards for face‑to‑face dimension; for DN 50 size the internal diameter and wall thickness correspond to ~Ø60.3 mm × 2.9/3.2 mm for butt‑weld ends in some variants Flow direction: Typically “flow‑up” for standard trim but flow‑down and special trim variants are supported