· Normal Size: 3/8”~2” · Pressure rating: 150 LB~2500 LB · Design Standard: API 6D · Design Features: Piston or Swing type, BB, WB, PSB. · Materials: A105, LF2, F11, F22, F5, F304, F316, F304L, F316L, F51 · Test Standard: API 6D, API 598