Piston gate valves are essential for controlling fluid flow in various industrial applications. They belong to the gate valve family, which permits only unidirectional flow in a system.
Like other gate valves, a piston gate valve has a mechanism to keep the disc in the seating position. This is usually a spring, but it could be any other mechanism that provides a force contrary to fluid flow. One key attribute of piston gate valves is a guide, which prevents misalignment of the piston as it opens and closes. The following diagram highlights the basic components of a piston gate valve.
- Series: FB-130
- Size: 1/4″ to 2” (8mm to 50mm)
- Material: ASTM A105, A350 LF2, A479 F316, A182 F51
- Trims: 13% Cr,304,316,17-4PH
- Seat: (SS 304 / SS316 + TC ) (SS 304 / SS316 + ST6)
- Port: Full & Regular (Reduced) Bore
- Pressure Rating: ASME #800,#1500,#2500
- End Connection: Butt Weld, NPT, BSP, SW
- Construction: Bolted Bonnet
- Operation: Lever, Gear Operated, Pneumatic Actuator, Electric Actuator
- Design Standard: API 602 – ASME B16.34 – BS 5352
- Pressure Testing: API 598
- Face to Face: ANSI B 16.10
- Butt Weld: ANSI B 16.25
- Socket Weld: ANSI B 16.11
- Screwed End: ANSI B 1.20.1 [ BSP / NPT ]
- Quality Assurance: ISO 9001
- NACE: MR 0103, MR 0175
- Made from one-piece, die-forged bodies.
- All internal surfaces are accurately machined to provide maximum performance.
- Renewable seat rings are made from hardened stainless steel, faced with Stellite.
- The wedge is forged, hardened, ground, and lapped to ensure leak-free sealing.
- Fully guided wedge, precision machined body channels, for accurate, repeatable seating alignment.
- Graphite packing, complete with braided graphite filament yarn anti-extrusion rings, is standard.
- Code compliance with ASME B16.34 and the ASME boiler and pressure vessel code, Section I.
- Smaller non-rising stem forged steel gate valves are suitable for wellhead manifold systems as they provide a reliable mechanical seal and can handle high-pressure operations.
- Forged steel double-expanding gate valves can be used in pipeline applications where operational integrity is vital.
- Forged steel resilient gate valves are suitable for many different industrial and commercial applications.
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