Companion Flange, Application Air, Non-Potable Water, Fitting Side A Connection Type Cup, Fitting Side B Connection Type Flange, Fitting Side A Copper Tube Size 4 in, Fitting Material Bronze, Fitting Side A Tube Outer Diameter 4 1/8 in, Maximum Operating Pressure 235 psi, Maximum Operating Temperature 200 Degrees F, Specific Fitting Shape Class 150 Companion Flange, Flange Outside Diameter 9 in, Number of Bolt Holes 8, Flange Thickness 11/16 in, Bolt Hole Diameter 3/4 in