Solder DWV Adapters Application Drain Vent Waste Fitting Side A Connection Type Cup Fitting Side B Connection Type Spigot Fitting Side A Copper Tube Size 3 in Fitting Material Bronze Fitting Side B Pipe Size 3 in Fitting Side A Tube Outer Diameter 3 3/8 in Specific Fitting Shape Straight Adapter Standards ASME/ANSI B16.22 MSS SP-104 NSF/ANSI/CAN-61 Compatible Tube Material Copper