CTS Cap Application Potable Water Compatible Copper Tube Size 3/4 in Compatible Tube Outer Diameter 7/8 in Fitting Connection Type Socket Fitting Material CPVC Maximum Operating Pressure 400 psi Maximum Operating Temperature 180 Degrees F Specific Fitting Shape Cap Standards ASTM D1784 ASTM D2846 NSF 14 NSF 61 Color Yellow Compatible Copper Tube Type CPVC CTS Tube Compatible Tube Material CPVC Material Grade SDR-11 Minimum Operating Temperature 32 Degrees F