NIBCO 741 3 Cast Copper Tube Flange, Cup x Flange, 3 in CTS x 3 in Pipe

A NIBCO sweat fitting adapter connects copper tubing to flanged pipe systems in plumbing, HVAC, and industrial applications. The cup end solders onto 3 in CTS copper tube, while the flange end bolts to a mating flange, creating a leak-proof joint for water, gas, or steam lines.

The NIBCO 741 3 is a cast copper tube flange with a cup x flange connection. It fits 3 in CTS copper tube on the cup side and 3 in pipe on the flange side. The manufacturer part number is 741 3, and it is designed for sweat (solder) installation.

3G Electric supplies NIBCO sweat fitting adapters worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on the NIBCO 741 3 or other cast copper flanges.

To install a NIBCO sweat fitting adapter, clean the copper tube end and the cup interior with emery cloth. Apply flux, insert the tube fully into the cup, and heat evenly with a torch until solder melts into the joint. Allow to cool naturally before pressurizing the system.