Forged os & y Gate Valve 1.CE,ISO9001,API6D,CQC,PDO. 2 ... 2500LB A105,F5,F9,F11,F316,LF2 etc Forged os & y Gate ValveApplication standards:1. Design and manufacture conform to: ... .11 2) Screw thread dimension conform to ANSI B 1.20.13. Test and inspection conform to: API 5984. Structure ... ; F304; F304L; F316; F316L; F321; LF2 etc.Forged os & y Gate Valve: CZTV could design and manufacture as your request ...