Cap Application Potable Water Fitting Connection Type Compression Fitting Material Brass Fitting Tube Size Outer Diameter 5/8 in Maximum Operating Pressure 150 psi Maximum Operating Temperature 250 Degrees F Specific Fitting Shape Cap System of Measurement Imperial Fitting Thread Size 7/8-14 Standards NSF/ANSI 61 Annex G Compatible Tube Material Aluminum Copper Thermoplastic Minimum Operating Temperature 65 Degrees F