Description
OS&Y Gate Valve Description
OS&Y gate valves, also known as outside screw and yoke valves, are manually operated shut-off valves used to start or stop fluid flow in pipelines transporting liquids, gases, and steam. They feature a rising steel stem threaded externally to mesh with the handwheel and yolk assembly allowing operators to open and close the valve. The handwheel moves up or down and provides the required force to slide the gate and wedge across or away from the valve seat.
OS&Y valves are ruggedly constructed using cast or forged steel to withstand high pressures. They are mainly used in water systems, steam systems, fire prevention systems, and fuel delivery systems in various industrial facilities including power plants, refineries, and pumping stations. They offer reliable on/off control and are designed to achieve tight shut-off with proper seat contact when closed.Learn more about how these valves work and their benefits.
OS&Y Gate Valve Technical Advantages
-Valve Design According to API 600 & ISO 10434
– Standards: ASME B16.34-BS 1414
– End to End Dimensions According to ASME B16.10 & ISO 5752
– Flange Dimensions According to ANSI B16.10-ASME B16.47-BS3293
– Buttweld Dimensions According to ASME B16.25
– Visual Inspection: MSS SP-55
– Valve Test According to API 598 & ISO 5208-MSS SP-61
-Valve Series Gate Valves Are Suitable For Heavy Duties such as Boiler Facilities and Rough Surroundings.
– Minimal Leakage, Long Service Life
– Effective Stream Separation in Either Direction of The Valve
– Outside Screw and Yoke Design
– Seat Rings and Wedge Disc Ground and Lapped to a Mirror Finish to Provide Matching Sealing Surfaces
– Wedge Disc Fully Guided and Precision Fitted to Ensure Tight Sealing Performance
– Machined Backseat Bushing to Provide a Secondary Metal-Metal Stem Seal
– Grease Fitting for Yoke Sleeve Lubrication to minimize Operating Torque & Stem Wear
– Bolted Bonnet Construction
OS&Y Gate Valve Material
– Bonnet: Ductile Iron (GGG50)
– Wedge: Ductile Iron + EPDM
– Bolts: Steel 8.8 + Wax, A270
– Stem Nuts: Ductile Iron Brass
– Stem: 2Cr13, SS316, SS316L
– Gasket: EPDM
– O Ring: EPDM
– Bearing: Steel
– Support: Ductile Iron (GGG50)
OS&Y Gate Valve Options:
– Flanged or Buttweld ends
– OS&Y Rising Stem and Non-Rising Stem Versions Available
– Ready For Electric Actuator
– With Electric Actuator
– With Handwheel
– With Telescopic or Rigid Extension Spindle
– 2Cr13 as Standard
– With Limit Switches or Position Indicators
– With Operation Cap & T-Key