Design and Manufacture

Cast Steel Check Valve to BS 1868 ASME B16.34 and API 6D.

Forged Steel Check Valve to API 602.

Inspection and Test:API 598 or API 6D.

End Flange Dimension:ASME B16.5 (forNPS<24).

ASM B 16.47 Series B, API 605 or ASME16.25.

Series A, MSS SP.44 (for NPS>24).

BW End Dimension:ASME B16.25.

Socket-Weld Dimension:ASME B16.11.

Face to Face and End to End :ASME B16.10.

Pressure-Temperature Rating:ASME B16.34.

Flanged Butt-Welding Ends Swing Check Valves Products Design Features

Flanged & Butt-Welding Ends Swing Check Valves are used in pipes under pressures between Class 150 ~ 900 Lb working temperatures between 29-570C, They are used in industries include oil, chemistry, fertilizer and power generation to prevent the backward flux of the media.

Main structural features:

1. Rational structure, reliable sealing, excellent performance,pretty appearance.

2.Co-radix alloy welded sealing surface, anti-wearing,erosion-proof abrasion-proof, and longer use life.

3.Inside-set bolt-bearing structure reduces leakage and reliable use.

4.Under pressures 16.0 Mpa, Class 1500,the valve belly, self-tightening structure offers a tighter sealing for a higher medium pressure.

5.Different parts materials and different sizes for flange,butt -welding are available for sensible combination according to different working facts and customers requirements.

The Features of Check Valve

Bolted Bonnet; Swing and lift disc; Metallic seating surfaces.


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