Cast Steel Swing Check valve

In any fluid handling system, cast steel check valves are the controlling element: starting or stopping flow,preventing backflow.

Swing Type Disc

Welded Seat/Threaded Seat

Conventional port or full port

Bolted Cover/Pressure Seal Check Valve

6″ & Larger With Eye Bolt

By Pass On Request

Lever & Weight Optional

Standard

Design – BS1868/API 6D/ASME B16.34

Face to Face – ASME B16.10

End to End – ASME B16.10

BW End – ASME B16.25

Test – API 598

Special – NACE MR-01-75

Design Features

1. Large-caliber check valves are provided with lifting rings for the convenience of hoisting.
2. Bolted bonnet, and the type of middle flange gasket may be class; CLASS 600 check valve may adopt pressure self-tightening seal structure.
3. Disc stop device to prevent disc from being opened too high, thus causing failure to be closed down.
4. Solid pin is precisely installed and provided with high inten-sity to ensure operational performance and service life of valve.
5. Rocker arm is given enough intensity. Upon being closed down, it has enough freedom for the closedown of valve disc.
6. Valve disc is given enough intensity and rigidity. Disc sealing surface may be built-up welded with metal material or inlaid with nonmental material responding to users’ requests.