Cap Application Gases Oils Fitting Connection Type Compression Fitting Material Brass Fitting Tube Size Outer Diameter 1/2 in Maximum Operating Pressure 2 200 psi Maximum Operating Temperature 400 Degrees F Specific Fitting Shape Cap System of Measurement Imperial Compatible Fitting Brands A-LOK Fitting Thread Size 3/4-20 Series A-LOK(R) Standards NACE NORSOK Minimum Operating Temperature 40 Degrees F Resistance Properties Corrosion-Resistant