circle seal单向阀 2259b-6ss brass buna n 3/4 in male bspt 2 psig
circle seal单向阀 2249b-6ss brass buna n 3/4 in male bspt 4 psig
circle seal单向阀 2259b-4ss brass buna n 1/2 in male bspt 2 psig
circle seal单向阀 2249b-4ss brass buna n 1/2 in male bspt 4 psig
circle seal单向阀 2259b-3ss brass buna n 3/8 in male bspt 2 psig
circle seal单向阀 2249b-3ss brass buna n 3/8 in male bspt 4 psig
circle seal单向阀 2259b-2ss brass buna n 1/4 in male bspt 2 psig
circle seal单向阀 2249b-2ss brass buna n 1/4 in male bspt 4 psig
circle seal单向阀 2259b-1ss brass buna n 1/8 in male bspt 2 psig
circle seal单向阀 2249b-1ss brass buna n 1/8 in male bspt 4 psig
