Union, Application Air, Inert Gases, Non-Combustible Gases, Potable Water, Fitting Side A Connection Type Compression, Fitting Side B Connection Type Compression, Fitting Material Brass, Fitting Side A Tube Outer Diameter 5/16 in, Fitting Side B Tube Outer Diameter 5/16 in, Maximum Operating Pressure 1,200 psi, Maximum Operating Temperature 200 Degrees F, Overall Length 1 3/8 in, Specific Fitting Shape Straight Connector, Thread Size A 1/2-24, Thread Size B 1/2-24, Series Compression