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.