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Zhejiang DK Valve Co.,Ltd is the main manufacture for Forged Steel Check Valves, etc in China, our cheap price and best quality has made our stainless steel check valve very popular in European and Middle Eastern market. If you are interested to buy cast steel check valve, welcome to inquire us online.   Pressure seal swing check valve 900LB~2500LB No. Name part CSTOASTM ASTOASTM SSTOASTM A105 F22 F304(L) F316(L) 1 Seat A276410 A276304 A276304(L) A276316(L) 2 Pin A276420 A182F304 A182F316 3 Seal ring A276304L A276316L 4 Seal nut A105 A182F304 A182F304(L) A182F316(L) 5 Body A105 A182F22 A182F304(L) A182F316(L) 6 Bonnet A105 A182F22 A182F304(L) A182F316(L) 7 Lifting nut A1942H A1944 A1948 A1948M 8 Four piece ring A276420 A182F304 A182F316 9 Drawbridge A193B7 A193B16 A193B8 A193B8M 10 Rocker A105 A182F22 A182F304(L) A182F316(L) 11 Disc A276410 F304 A182F304(L) F316(L) 12 Nut A1942H A1944 A1948 A1948M Suitable medium water, steam,oil,etc water,steam,oil,etc nitric acid, acetic acid,etc Suitable Temp. _29~425 _29~550 _29~200   Note:we also make valves according to clients'demand on material. CS=carbon steel;AS=alloy steel;SS=stainless steel; Dimensions(MM) and weights(KG) NPS 1/2" 3/4" 1" 11/4" 11/2" 2" L 900LB~1500LB 140 140 140 178 178 216 2500lb 186 186 186 232 232 279 H 117 117 117 152 152 195 Weight 900LB~1500LB 8.2 7.8 7.7 19.8 19.2 21.3 2500lb 10.0 9.6 9.4 21.5 Pressure seal swing check valve 900LB~2500LB Details No. name part CStoASTM AStoASTM SStoASTM A105 F22 F304(L) F316(L) 1 Body A105 A182F22 A182F304(L) A182F316(L) 2 Disc A276 420 A276304 A276304(L) A276316(L) 3 Seal nut A105+STL F22+STL A182 F304(L) F316(L) 4 Seal ring A276 304L A276 304L A182F304(L) A276 316L 5 Fixing nut A1942H A1944 A1948 A194 8M 6 Lifting nut A1942H A1944 A1948 A194 8M Suitable medium water,steam,oil,etc water,steam,oil,etc nitric acid, acetic acid,etc Suitable Temp. _29~425 _29~550 _29~200 Note: we also make valves according to clients' demand on material. CS=carbon steel;AS=alloy steel;SS=stainless steel; Dimensions (MM) and weights (KG) NPS 1/2" 3/4" 1" 1/4" 11/2" 2" L 900LB~1500LB 140 140 140 178 178 216 2500LB 186 186 186 232 232 279 H 117 117 117 152 152 195 Weight 900LB~1500LB 7.5 7.0 6.8 18.5 18.1 20.3 2500LB 9.0 7.6 8.4 19.5 20.1 21.8 Our products are very competitive, feel free to contact us and offer you the fastest