NIBCO Sweat Fitting Adapter: 3 in CTS x 3 in Pipe, Cup x Flange, Bronze (MPN 771-LF 3)
SKU 3G-OTH-475815
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Frequently Asked Questions
What is a NIBCO 771-LF 3 sweat fitting adapter used for?
This NIBCO bronze sweat fitting adapter connects 3-inch CTS copper tube to a 3-inch pipe flange in low-lead potable water and hydronic heating systems. It provides a secure, leak-resistant joint for industrial plumbing applications.
What are the specifications of the NIBCO 771-LF 3?
The NIBCO 771-LF 3 is a low-lead cast bronze tube flange with a cup x flange connection. It fits 3-inch CTS copper tube on one side and 3-inch pipe on the flange side. The manufacturer part number is 771-LF 3.
Where to buy a NIBCO 771-LF 3 worldwide?
3G Electric supplies the NIBCO 771-LF 3 bronze sweat fitting adapter to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this low-lead cast copper flange.
How to install a NIBCO sweat fitting adapter?
Clean the copper tube end and fitting cup thoroughly. Apply flux, then heat the fitting evenly until solder melts into the joint. Allow to cool without disturbing. For the flange side, bolt to matching pipe flange using appropriate gasket and fasteners.
Used in
Common applications for NIBCONIBCO Products
3G Electric supplies NIBCO low-lead cast copper & bronze tube flanges. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









