XL Cap Application Potable Water Compatible Copper Tube Size 2 1/2 in Fitting Connection Type Press Fit Fitting Material Copper O-Ring Material EPDM Specific Fitting Shape Cap Overall Length 2 1/8 in Maximum Operating Pressure 200 psi Maximum Operating Temperature 250 Degrees F Standards CRN CSA FM IAPMO Uniform Plumbing Code (UPC) ICC International Plumbing Code (IPC) NFPA 13D NFPA 13R NSF/ANSI 372 NSF/ANSI 61 PHCC UL Minimum Operating Temperature 0 Degrees F