NIBCO Sweat Fitting Adapter: 1 1/4 in CTS x 1 1/4 in Pipe, Cup x Flange
SKU 3G-OTH-475830
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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 equipment in plumbing and HVAC systems. This bronze cup x flange adapter joins 1 1/4 in CTS tube to 1 1/4 in pipe, providing a leak-resistant transition for water or gas lines.
What are the specifications of the NIBCO 771-LF 11/4 adapter?
The NIBCO 771-LF 11/4 is a low-lead bronze sweat fitting adapter with cup x flange connections. It fits 1 1/4 in CTS copper tube on one side and 1 1/4 in pipe on the flange side. The bronze construction resists corrosion in potable water systems.
Where to buy NIBCO sweat fittings in worldwide?
3G Electric supplies NIBCO sweat fittings like the 771-LF 11/4 to customers worldwide. We handle full logistics, customs clearance, and delivery for global orders. Contact our team to source this bronze adapter for your plumbing or HVAC project.
How to install a NIBCO cup x flange adapter?
Clean the copper tube end and apply flux. Heat the cup evenly until solder melts into the joint. For the flange side, bolt to the mating flange with a gasket. Use low-lead solder for potable water systems. Always follow local plumbing codes.
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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.









