Cast Steel Wedge Gate Valve

Cast steel wedge gate valves use a wedge-shaped gate as the closing member, moving vertically along the seat centreline to shut off flow. When fully open the gate retracts completely out of the bore, so the medium passes straight through and flow resistance is close to zero — the isolation valve with the lowest pressure loss in fully open and fully closed service. The valve has a rising stem (OS&Y) design: the stem rises with the gate and the exposed threads give a clear indication of valve position. Sealing faces can be hardfaced with 13Cr or Stellite carbide for wear and erosion resistance at high temperature and pressure. Suitable media include steam, oil, natural gas and water; typical duties are main isolation in power plants, refineries and transmission pipelines.

· Wedge-type rigid or flexible gate with near-zero flow resistance when fully open · Rising stem (OS&Y) design with visible position indication · Sealing faces hardfaced with 13Cr or Stellite 6 (Trim 5) · Pressure-seal or bolted-bonnet body for high-pressure service · Gearbox, electric or pneumatic actuator options · Suitable for high-temperature steam and oil/gas media

For isolation and shutoff in refining, chemical, power plant boiler feedwater and main steam service and oil and gas transmission pipelines, particularly where high temperature and pressure combine with a low pressure-loss requirement.