circle seal单向阀 2220b-8mm brass teflon? 1 in male npt 4 psig
circle seal单向阀 2220b-6mm brass teflon? 3/4 in male npt 4 psig
circle seal单向阀 2220b-4mm brass teflon? 1/2 in male npt 4 psig
circle seal单向阀 2220b-3mm brass teflon? 3/8 in male npt 4 psig
circle seal单向阀 2220b-2mm brass teflon? 1/4 in male npt 4 psig
circle seal单向阀 2220b-1mm brass teflon? 1/8 in male npt 4 psig
circle seal单向阀 2259b-8mm brass buna n 1 in male npt 2 psig
circle seal单向阀 2249b-8mm brass buna n 1 in male npt 4 psig
circle seal单向阀 2259b-6mm brass buna n 3/4 in male npt 2 psig
circle seal单向阀 2249b-6mm brass buna n 3/4 in male npt 4 psig
