Union Application Gases Liquids Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Brass Fitting Side A Tube Outer Diameter 3/4 in Fitting Side B Tube Outer Diameter 3/4 in Maximum Operating Temperature 400 Degrees F Overall Length 2 1/8 in Specific Fitting Shape Straight Connector Compatible Fitting Brands CPI Thread Size A 1-20 Thread Size B 1-20 Series CPI(TM) System of Measurement Imperial Standards ASME SB75 ASTM B75