About the SIOUX 645XC2 1/2" CPVC x 1/2" PEX ADAPTER
1/2 INCH X 1/2 INCH; 1/2 INCH PEX X 1/2 INCH FEMALE CPVC END CONNECTION; PREFORMED COPPER MATERIAL; ASTM F1807 MATERIAL SPECIFICATION; APPLICATION RESIDENTIAL WATER; 645XC2 MODEL; APPLICABLE STANDARD CSA B137.5-97