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NIBCO 703R-LF 3/4X3/8 Low-Lead Bronze Cup x FNPT Adapter - Low-Lead Cast Copper & Bronze Tube Fittings
NIBCOLow-Lead Cast Copper & Bronze Tube Fittings

NIBCO 703R-LF 3/4X3/8 Low-Lead Bronze Cup x FNPT Adapter

NIBCO Low-Lead Cast Copper & Bronze Tube Fittings. Specifications: Type: Cup x FNPT, Bronze.

SKU 3G-OTH-485642

Also listed as: 703RLF34X38 · 703R LF 3 4X3 8 · 703R-LF-3-4X3-8

Brand
NIBCO
Item
703R-LF 3/4X3/8 Low-Lead Bronze Cup x FNPT Adapter
Category
Low-Lead Cast Copper & Bronze Tube Fittings
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Technical Specifications

NIBCO
Manufacturer Part Number
703R-LF 3/4X3/8
Type
Cup x FNPT, Bronze

Technical Documents

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NIBCO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

NIBCO Low-Lead Cast Copper & Bronze Tube Fittings. Specifications: Type: Cup x FNPT, Bronze.

Frequently Asked Questions

What is NIBCO 703R-LF 3/4X3/8 sweat fitting adapter used for?

This NIBCO sweat fitting adapter connects 3/4 in CTS copper tube to a 3/8 in female NPT threaded pipe. It is used in potable water, HVAC, and plumbing systems where a low-lead bronze transition from solder to threaded connections is required.

What are the specifications of NIBCO 703R-LF 3/4X3/8?

The NIBCO 703R-LF is a low-lead cast bronze sweat fitting adapter with a cup x FNPT connection. It measures 3/4 in CTS on the cup end and 3/8 in pipe on the female NPT end. The manufacturer part number is 703R-LF 3/4X3/8.

Where to buy NIBCO 703R-LF 3/4X3/8 worldwide?

3G Electric supplies the NIBCO 703R-LF 3/4X3/8 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 bronze adapter.

How to install NIBCO sweat fitting adapter 703R-LF?

Clean and flux the copper tube end, then solder into the cup side of the NIBCO 703R-LF adapter. Apply thread sealant to the male pipe and tighten into the FNPT side. Avoid overheating the bronze fitting during soldering to maintain joint integrity.

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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