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NIBCO Sweat Fitting Adapter: 3 in CTS x 3 in Pipe, Cup x Flange, Cast Copper (MPN 741 3) - Cast Copper & Bronze Tube Flanges
NIBCOCast Copper & Bronze Tube Flanges

NIBCO Sweat Fitting Adapter: 3 in CTS x 3 in Pipe, Cup x Flange, Cast Copper (MPN 741 3)

SKU 3G-OTH-475846

Brand
NIBCO
Item
Sweat Fitting Adapter: 3 in CTS x 3 in Pipe, Cup x Flange, Cast Copper
Category
Cast Copper & Bronze Tube Flanges
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Technical Specifications

NIBCO
Manufacturer Part Number
741 3
Type
Cup x Flange, Cast Copper
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NIBCO Products
3G Electric (S) Pte. Ltd. — Singapore

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.

Used in

Common applications for NIBCO
HVAC systems — NIBCO bronze ball valves (T58570UL series) for isolation and control in chilled water loops
Water treatment plants — NIBCO bronze gate valves (T29 series) for shut-off in filtration and distribution lines
Industrial burner systems — NIBCO brass ball valves (GB2A series) for fuel oil or gas supply lines
Chemical processing — NIBCO bronze ball valves with locking lever (T58570LL series) for safety-critical flow control
Steam systems — NIBCO bronze globe valves for throttling in low-pressure steam applications
General plumbing — NIBCO bronze ball valves (S58570 series) with sweat connections for copper piping in commercial buildings

NIBCO 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.

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