NIBCO Sweat Fitting Adapter: 3 in CTS x 3 in Pipe, Cup x Flange, Cast Copper (MPN 741 3)
SKU 3G-OTH-475846
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Frequently Asked Questions
What is a NIBCO sweat fitting adapter used for?
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.
What are the specifications of the NIBCO 741 3 sweat fitting adapter?
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.
Where to buy NIBCO sweat fitting adapters worldwide?
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.
How to install a NIBCO sweat fitting adapter?
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.
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Common applications for NIBCONIBCO Products
3G Electric supplies NIBCO cast copper & bronze tube flanges. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.








