Straight Union Application Air Non-Potable Water Steam Fitting Side A Connection Type Push-to-Connect Fitting Side B Connection Type Push-to-Connect Fitting Side A Tube Outer Diameter 4 mm Fitting Side B Tube Outer Diameter 4 mm Fitting Material Stainless Steel Material Grade 316 Color Silver Includes Pre-Applied Thread Sealant No Maximum Operating Pressure 145 psi Maximum Operating Temperature 302 Degrees F Overall Length 26 3/16 mm Specific Fitting Shape Straight Connector