Cast Steel Swing Check Valve

A retention valve, also known as one-way or non-return valve, is a mechanical device that normally allows liquid or gases to flow through it in only one direction. This type of valve has two ports, i.e., has two openings in its body, one for the fluid to enter and the other for it to leave. The flow of fluid opens the valve by forcing a disk or a ball in one direction. When the flow is stopped, the disk or ball closes the valve.

Features of Cast Steel Swing Check Valves

1.Swing Type Disc

2.Welded Seat/Threaded Seat

3.Conventional port or full port

4.Bolted Cover/Pressure Seal Check Valve

5.6" & Larger With Eye Bolt

6.By Pass On Request

7.Lever & Weight Optional

Standards of Cast Steel Swing Check Valves

1.Design - BS1868/API 6D/ASME B16.34

2.Face to Face - ASME B16.10

3.End to End - ASME B16.10

4.BW End - ASME B16.25

5.Test - API 598

6.Special - NACE MR-01-75

Components Cast Steel Swing Check Valves 

Design Features of Cast Steel Swing Check Valves

1.Flexible graphite gasket for Class 150 valves, spiral wound gasket for Class 300 & 600 valves,

and ring joint for Class 900 & above valves or as an option for the Class 600 valves on customer

request.

2.A hinge and hinge pin provided and mounted so as to permit full movement of the disc.

3.Standard renewable seal welded seat with stellite 6 while optional screwed-in seat.

4.Standard swing disc type, used in horizontal position for liquid service application or used in vertical

position where liquid flow from botton to top.

5.Provision of standard bosses for a drain tapping at location G at the lower part of body centerline.

Additional bosses conform to customer requirements.