Check Valve, also known as a Non-return Valve. This is an automatic valve when it is automatically opened or closed by the force generated by the medium flowing within the pipeline. Its major function is to prevent the backflow of the medium in the pipeline, reverse rotation of the pump and its driving motor, and discharge of the medium in the container.

Technical specification
Design & manufacturing standard as per API 6D/BS 1868
Face to face standard as per API 6D/ASME B16.10
Fanged ends standard as per ASME B16.5/ASME B 16.47/ASME B 16.25
Testing & inspection standard as per API598

Product Range
Body material: Carbon steel, Stainless steel, Alloy steel ,Monel, Duplex, Inconel
Size range(s):1/2"～60"
Pressure rating: Class150～Class 2500
End connection: RF, RTJ, BW
Working temperature:-196℃～+560℃

Design Features
Type: bolted cove type, pressure self-sealing cover type
Compact and reasonable structure, reliable tightness and good performance;
Smooth fluid passageway and small fluid resistance;Swing type disc.
Can be designed with a Damping Cylinder.
Rapid closing and flexible actions of the valve disc .
Small closing impact, water hammer is not liable to be generated.