Applicable Standards:
?STEEL CHECK VALVES, API 594/API6D 
?STEEL CHECK VALVES,ISO14313 
?STEEL VALVES,ASME B16.34
?FACE TO FACE, ASME B16.10
?END FLANGES,ASME B16.5 ASME B16.47 
?INSPECTION AND TEST, API 598/API 6D

Design descriptions:
?ONE PIECE BODY 
?BUTTERFLY SWING TYPE
?DUAL-PLATE DISC,LONG-PATTERN 
?RENEWABLE SPLIT DISC
?HORIZONTAL OR VERTICAL SERVICE 
?WAFER OR LUG WAFER ENDS
?AVAILABLE WITH FLANGED ENDS