NIBCO Sweat Fitting Adapter: 5/8 in CTS x 1/2 in Pipe, Cup x FNPT
SKU 3G-OTH-472339
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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 5/8 in CTS cup end solders onto tubing, while the 1/2 in FNPT end accepts male threaded fittings for a leak-tight transition.
What are the specifications of the NIBCO 603R 5/8x1/2 adapter?
This NIBCO wrot copper adapter has a 5/8 in CTS cup connection and a 1/2 in FNPT threaded end. The MPN is 603R 5/8x1/2. It is designed for sweat (solder) installation and meets standard plumbing requirements for copper tube fittings.
Where to buy NIBCO sweat fitting adapters worldwide?
3G Electric supplies NIBCO sweat fitting adapters to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine NIBCO fittings to your location. Contact us for pricing and lead time.
How to install a NIBCO sweat fitting adapter?
Clean the copper tube end and fitting cup with emery cloth. Apply flux, insert tube into the cup, and heat evenly with a torch until solder melts into the joint. Allow to cool before pressurizing. Always follow local plumbing codes and manufacturer guidelines.
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Common applications for NIBCONIBCO 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.









