Solder Pressure Companion Flanges Application Drain Vent Waste Non-Potable Water Fitting Side A Connection Type FNPT Fitting Side B Connection Type Flange Fitting Material Bronze Fitting Side A Pipe Size 2 1/2 in Specific Fitting Shape Flange Adapter Flange Outside Diameter 7 in Number of Bolt Holes 4 Flange Thickness 5/8 in Bolt Hole Diameter 3/4 in Standards ASME B1.20.1 MSS SP-106 Compatible Tube Material Copper