NIBCO Sweat Fitting Adapter: 4 in CTS x 4 in Pipe, Cup x Flange, Bronze (MPN 771-LF 4)
SKU 3G-OTH-475809
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Frequently Asked Questions
What is a NIBCO 771-LF 4 sweat fitting adapter used for?
This NIBCO bronze tube flange connects 4-inch CTS copper tube to 4-inch pipe using a cup x flange design. It is used in plumbing, HVAC, and industrial piping systems where a low-lead, corrosion-resistant joint is required for water or other non-aggressive fluids.
What are the specifications of the NIBCO 771-LF 4?
The NIBCO 771-LF 4 is a low-lead cast bronze sweat fitting adapter with a cup x flange connection. It fits 4-inch CTS copper tube on one side and 4-inch pipe on the flange side. The manufacturer part number is 771-LF 4, and the type is Cup x Flange, Bronze.
Where to buy a NIBCO 771-LF 4 worldwide?
3G Electric supplies the NIBCO 771-LF 4 bronze sweat fitting adapter to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this low-lead cast copper flange.
How to install a NIBCO sweat fitting adapter?
Clean the copper tube end and the cup interior of the NIBCO 771-LF 4. Apply flux, then heat the cup evenly until solder melts into the joint. Allow to cool without disturbance. For the flange side, bolt to the mating pipe flange using appropriate gasket and fasteners.
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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.









