Cap Application Air Potable Water Compatible Copper Tube Size 1 1/4 in Compatible Tube Outer Diameter 1 3/8 in Fitting Connection Type Cup Fitting Material Wrot Copper Maximum Operating Pressure 439 psi @ 100 Degrees F Maximum Operating Temperature 400 Degrees F Specific Fitting Shape Cap Standards ASME B16.22 ASTM B75 Alloy C12200 MSS SP-104 NFPA 99 NSF/ANSI 372 NSF/ANSI 61 UL 207 Minimum Operating Temperature 20 Degrees F Resistance Properties Dezincification-Resistant