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NIBCO Sweat Fitting Union: 3 in CTS x 3 in CTS, Cup x FTG, Bronze (MPN 733-LF 3) - Low-Lead Cast Copper & Bronze Tube Fittings
NIBCOLow-Lead Cast Copper & Bronze Tube Fittings

NIBCO Sweat Fitting Union: 3 in CTS x 3 in CTS, Cup x FTG, Bronze (MPN 733-LF 3)

SKU 3G-OTH-485682

Brand
NIBCO
Item
Sweat Fitting Union: 3 in CTS x 3 in CTS, Cup x FTG, Bronze
Category
Low-Lead Cast Copper & Bronze Tube Fittings
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Technical Specifications

NIBCO
Manufacturer Part Number
733-LF 3
Type
Cup x FTG, Bronze
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NIBCO Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is a NIBCO sweat fitting union used for?

A NIBCO sweat fitting union connects two copper pipes in plumbing and HVAC systems, allowing easy disconnection for maintenance. This 3-inch CTS bronze union with cup x FTG ends is ideal for potable water lines where low-lead compliance is required.

What are the specifications of the NIBCO 733-LF 3 union?

The NIBCO 733-LF 3 is a low-lead cast bronze sweat fitting union for 3-inch CTS copper tubing. It features a cup x FTG (female thread) connection type and is manufactured under part number 733-LF 3. The bronze construction ensures corrosion resistance in water systems.

Where to buy NIBCO 733-LF 3 union worldwide?

3G Electric supplies the NIBCO 733-LF 3 union to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this low-lead bronze fitting.

How to install a NIBCO sweat fitting union?

To install a NIBCO sweat union, clean and flux the pipe ends and fitting cup. Heat the joint evenly with a torch until solder melts into the gap, then allow to cool. For the threaded end, apply pipe thread sealant and tighten securely. Always follow local plumbing codes.

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 low-lead cast copper & bronze tube fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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