Design Single Small Orifice & Large Orifice, Double Air Valve with screw Down IsolationBody MaterialCI,WCB,CF8,CF8M,CF3,CF3M,DUPLEX SS EtcSize Floating DesignDN 50 to DN 200Class& End Connection PN10 to PN16& Screwed End, Flanged EndStandardsDesign Standard:End:Testing Standard:Material Standard:IS: 14845ASME B16.5,ASME B16.11,ASME B16.25EN 13445ASTM,NACE MR 0175/ISO 15156-1,2 &3, NORSOK 6 M650