... Fugitive emission control is available upon request Forged steel gate valve:Size :1/4" ~ 2"Pressure: Class 150- ... ,F304,F304L,F316,F316L,F321,F51Design Standard : Design : API 602Face to face : ASME B 16.10End Flange : ... RF / FF / RTJ / BWInspection and test : API 6D , API 598.Structural Features:OS&YBolted bonet.single wedge , full ... ends.Butt welding ends.Flanged ends. API 602 Forged Gate Valve ,OS&Y,BB