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Mueller Streamline W 01037 is a solder-joint reducing coupling (WC-400R) that connects a 3/4-inch cup to a 3/8-inch cup for above-ground potable water supply systems. Constructed of wrot copper, the fitting has tube outside diameters of 7/8 x 1/2 in, an overall length of 1.38 in, and a pressure rating of 700 psi. Ends are cup (female solder) connections with stamped manufacturer identification.
Copper solder-joint reducing coupling for above-ground potable water systems; 3/4 in cup x 3/8 in cup; 1.38 in length; 700 psi rating; WC-400R series.
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