Cap Application Compressed Air Cooling Water Fire Protection Hydronics Marine Compatible Copper Tube Size Not Applicable Compatible Pipe Size 1/2 in Fitting Connection Type Press Fit Fitting Material Carbon Steel O-Ring Material FKM Specific Fitting Shape Cap Overall Length 3 1/32 in Maximum Operating Pressure 200 psig Maximum Operating Temperature 250 Degrees F Standards AHJ Approved ASTM FM Approved UL Listed Finish/Coating Zinc Nickel Compatible Pipe Material Carbon Steel