Union Reducer 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 3/8 in Fitting Side B Tube Outer Diameter 1/2 in Maximum Operating Pressure 1 000 psi Maximum Operating Temperature 200 Degrees F Overall Length 1 23/32 in Specific Fitting Shape Straight Reducing Connector Thread Size A 9/16-24 Thread Size B 11/16-20