circle seal单向阀 2224b-4mm brass silicone 1/2 in male npt 2 psig
circle seal单向阀 2224b-3mm brass silicone 3/8 in male npt 2 psig
circle seal单向阀 2224b-2mm brass silicone 1/4 in male npt 2 psig
circle seal单向阀 2224b-1mm brass silicone 1/8 in male npt 2 psig
circle seal单向阀 2233b-8mm brass neoprene 1 in male npt 4 psig
circle seal单向阀 2233b-6mm brass neoprene 3/4 in male npt 4 psig
circle seal单向阀 2233b-4mm brass neoprene 1/2 in male npt 4 psig
circle seal单向阀 2233b-3mm brass neoprene 3/8 in male npt 4 psig
circle seal单向阀 2233b-2mm brass neoprene 1/4 in male npt 4 psig
circle seal单向阀 2233b-1mm brass neoprene 1/8 in male npt 4 psig
