Plug Application Air Potable Water Compatible Copper Tube Size 1/2 in Compatible Tube Outer Diameter 5/8 in Fitting Connection Type FTG Fitting Material Wrot Copper Maximum Operating Pressure 577 psi @ 200 Degrees F Maximum Operating Temperature 400 Degrees F Specific Fitting Shape Plug Standards ASME B16.22 ASTM B75 Alloy C12200 MSS SP-104 NFPA 99 NSF/ANSI 372 NSF/ANSI 61 Minimum Operating Temperature 20 Degrees F Resistance Properties Dezincification-Resistant