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A check valve with a 1/8" male and 1/8" female connection. Brass construction is resistant to corrosion. Made by SMC.
SMC check valve 6443390 is a new check valve for your equipment. It is made with brass for corrosion resistance when used with mildly aggressive chemicals. This device protects your pump from excessive pressure. It has a 1/8-inch male X 1/8-inch female connection.