NIBCOCast Copper & Bronze Tube Fittings

NIBCO Sweat Fitting Adapter: 1 1/4 in CTS x 3/4 in Pipe, Cup x FNPT, Bronze (MPN 703R 11/4X3/4)

SKU 3G-OTH-469297

Brand

NIBCO

Item

Sweat Fitting Adapter: 1 1/4 in CTS x 3/4 in Pipe, Cup x FNPT, Bronze

Technical Specifications

NIBCO

Manufacturer Part Number

703R 11/4X3/4 

Type

Cup x FNPT, Bronze 

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Technical Documents

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NIBCO Products

3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is NIBCO 703R 11/4X3/4 sweat fitting adapter used for?

This NIBCO bronze adapter connects 1 1/4 in CTS copper tube to a 3/4 in female NPT pipe thread. It is used in plumbing, HVAC, and industrial piping systems for transitioning between tube and threaded connections.

What are the specifications of NIBCO 703R 11/4X3/4?

The NIBCO 703R is a cast bronze sweat fitting adapter with a Cup x FNPT configuration. It connects 1 1/4 in CTS copper tube to 3/4 in female NPT pipe. The manufacturer part number is 703R 11/4X3/4.

Where to buy NIBCO 703R 11/4X3/4 worldwide?

3G Electric supplies the NIBCO 703R 11/4X3/4 bronze adapter to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this fitting.

How to install NIBCO 703R 11/4X3/4 sweat fitting adapter?

Clean and flux the copper tube end, then solder the cup end using lead-free solder. Apply thread sealant to the FNPT end and tighten to the male pipe thread. Follow standard plumbing practices for bronze fittings.

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 fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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