Union Tee Application Air Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Side C Connection Type Compression Finish/Coating Nickel-Plated Fitting Material Brass Fitting Side A Tube Outer Diameter 1/2 in Fitting Side B Tube Outer Diameter 1/2 in Fitting Side C Tube Outer Diameter 3/8 in Thread Size C 17/32-24 System of Measurement Imperial Maximum Operating Pressure 150 psi Maximum Operating Temperature 200 Degrees F