circle seal单向阀 h224b-4pp brass silicone 1/2 in female npt 0.5 to 1 psig
circle seal单向阀 h224b-2pp brass silicone 1/4 in female npt 0.5 to 1 psig
circle seal单向阀 h253b-6pp brass neoprene 3/4 in female npt 0.5 to 1 psig
circle seal单向阀 h233b-6pp brass neoprene 3/4 in female npt 2 to 4 psig
circle seal单向阀 h253b-4pp brass neoprene 1/2 in female npt 0.5 to 1 psig
circle seal单向阀 h233b-4pp brass neoprene 1/2 in female npt 2 to 4 psig
circle seal单向阀 h253b-2pp brass neoprene 1/4 in female npt 0.5 to 1 psig
circle seal单向阀 h233b-2pp brass neoprene 1/4 in female npt 2 to 4 psig
circle seal单向阀 h280b-6pp brass teflon? 3/4 in female npt 8 psig
circle seal单向阀 h220b-4pp brass teflon? 1/2 in female npt 8 psig
