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NIBCO 603R 3/8x1/2 Wrot Copper Cup x FNPT Adapter - Wrot Copper Tube Fittings
NIBCOWrot Copper Tube Fittings

NIBCO 603R 3/8x1/2 Wrot Copper Cup x FNPT Adapter

NIBCO Wrot Copper Tube Fittings. Specifications: Type: Cup x FNPT, Wrot Copper.

SKU 3G-OTH-472335

Also listed as: 603R38x12 · 603R 3 8x1 2 · 603R-3-8x1-2

Brand
NIBCO
Item
603R 3/8x1/2 Wrot Copper Cup x FNPT Adapter
Part Number
603R 3/8x1/2
Category
Wrot Copper Tube Fittings
Available to Order
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

NIBCO
Manufacturer Part Number
603R 3/8x1/2
Type
Cup x FNPT, Wrot Copper

Technical Documents

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

Product Description

NIBCO Wrot Copper Tube Fittings. Specifications: Type: Cup x FNPT, Wrot Copper.

Frequently Asked Questions

What is a NIBCO sweat fitting adapter used for?

A NIBCO sweat fitting adapter connects copper tubing to threaded pipe in plumbing and HVAC systems. The 3/8 in CTS cup end solders onto tubing, while the 1/2 in FNPT end accepts male threaded pipe, enabling reliable transitions in potable water, hydronic heating, and industrial fluid lines.

What are the specifications of the NIBCO 603R 3/8x1/2 adapter?

The NIBCO 603R is a wrot copper sweat fitting adapter with a 3/8 in CTS cup x 1/2 in FNPT configuration. It is designed for soldered connections on the cup end and threaded connections on the pipe end, suitable for use in plumbing and mechanical systems requiring durable, corrosion-resistant joints.

Where to buy NIBCO sweat fitting adapters worldwide?

3G Electric supplies NIBCO sweat fitting adapters worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner across 14 industrial departments, we provide genuine NIBCO fittings like the 603R 3/8x1/2 to support plumbing, HVAC, and industrial projects anywhere.

How to install a NIBCO sweat fitting adapter?

To install a NIBCO sweat fitting adapter, clean and flux the copper tube and cup end, then heat evenly with a torch until solder flows into the joint. For the FNPT end, apply thread sealant and tighten onto male pipe. Follow standard soldering practices for wrot copper fittings to ensure leak-free connections.

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
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NIBCO Products

3G Electric supplies NIBCO wrot copper 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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