circle seal单向阀 h220b-2pp brass teflon? 1/4 in female npt 8 psig
circle seal单向阀 h259b-6pp brass buna n 3/4 in female npt 0.5 to 1 psig
circle seal单向阀 h249b-6pp brass buna n 3/4 in female npt 2 to 4 psig
circle seal单向阀 h259b-4pp brass buna n 1/2 in female npt 0.5 to 1 psig
circle seal单向阀 h249b-4pp brass buna n 1/2 in female npt 2 to 4 psig
circle seal单向阀 h259b-2pp brass buna n 1/4 in female npt 0.5 to 1 psig
circle seal单向阀 h249b-2pp brass buna n 1/4 in female npt 2 to 4 psig
circle seal单向阀 h232b-6pp brass viton? 3/4 in female npt 0.5 to 1 psig
circle seal单向阀 h232b-4pp brass viton? 1/2 in female npt 0.5 to 1 psig
circle seal单向阀 h232b-2pp brass viton? 1/4 in female npt 0.5 to 1 psig
