Swing Check Valve Size:DN50-DN500 PN: CL150-CL2500 API6D Design ... standardFace to face dimensions per ANSI B16.10 standardEnd flange dimensions per ANSI B 16.5 Standard (1/2 ... diameter NPS1/ 2 -30"t2.ype of connection( a) flange(RF ,FM,M, ,TG ,FF,,RJ, SW,,BW, TH ... FD"5 materialsaccording toASTM carbon steel: WCB , A105,WCC,WCA, LCB,LCC;alloy steel:WC6,WC9,:cast stainless steel CF3,CF8,CF3M,CF8M; ...