Bulkhead Union Application Compressed Natural Gas Fuels Gases Hydrogen Liquids Oils Petroleum Oil Steam Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Brass Fitting Side A Tube Outer Diameter 5/8 in Fitting Side B Tube Outer Diameter 5/8 in Maximum Operating Pressure 6 100 psi Maximum Operating Temperature 400 Degrees F Overall Length 2 7/8 in Specific Fitting Shape Straight Bulkhead Union Compatible Fitting Brands A-LOK