TYPE Gate valve, GlobeValve, Check Valve in Forged & Cast Steel STANDARD ASME B16.34,B16.10,API SPECS SIZE RANGE 1/2" to 24" PRESSURE RATING #150,#300,#600 MATERIALS ASTM A105,A182,A216WCB/WCC,A217,A315,A352,A351 CF8/CF8M.