b'CHECK VALVES - SCREWED & WELD ENDSCREWED & WELD END CHECK VALVES800 TO 2690 CLASSDIMENSIONAL DRAWINGSPiston check bolted bonnet Ball check bolted bonnetH HP PL LSwing check bolted bonnet Y-type piston check bolted bonnetHP HPL LPiston check welded bonnet Piston check Y-type welded bonnetH HPPL LButt WeldH1PL2ASMEB16.25-RefertodrawingfordimensionsAUSTRALIAN PIPELINE VALVE 17'