Compression Fitting Union, Application Hydraulics, Fitting Side A Connection Type Compression, Fitting Side B Connection Type Compression, Finish/Coating Zinc Trivalent, Fitting Material Steel, Fitting Side A Tube Outer Diameter 3/4 in, Fitting Side B Tube Outer Diameter 3/4 in, Maximum Operating Pressure 3,250 psi, Maximum Operating Temperature 450 Degrees F, Overall Length 2 23/32 in, Specific Fitting Shape Straight Bulkhead Union, Compatible Fitting Brands Air-Way, Parker