check valve, swing check valve, non return valve
Design & manufacture: API6D, ASME B16.34, BS1868, API594.
Face to face: ASME B16.10, API594.
Flange ends: ASME B16.5 for NPS≦24", ASME B16.47/MSS SP-44 for NPS>24".
Butt-welding ends: ASME B16.25.
Test & inspection: API598.
Class: 150Lb~2500Lb or PN10~PN160 or JIS 10K ~ JIS 40K.
Sizes: 2"~ 48" or DN50~DN1200.
Materials: WCB, WC6, WC9, LCB, CF8/304, CF8M/316, CF3/304L, CF3M/316L, CF8C/347, S31803/2205, S32750/2507, CN7M/Alloy 20, 904L, etc.
NACE MR 0175 on request. For 900Lb~2500Lb, pressure seal bonnet is available.