NIBCO Sweat Fitting Coupling: 4 in CTS x 4 in CTS, Cup x FTG, Dimple Center Stop
SKU 3G-OTH-472299
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Frequently Asked Questions
What is a NIBCO sweat fitting coupling used for?
A NIBCO sweat fitting coupling joins two lengths of copper tubing in plumbing, HVAC, and industrial piping systems. The 4 in CTS cup x FTG design with dimple center stop ensures proper insertion depth for reliable solder joints in water, gas, and steam lines.
What are the specifications of the NIBCO 601 4 coupling?
The NIBCO 601 4 is a 4 in CTS x 4 in CTS wrot copper sweat coupling with cup x FTG ends and a dimple center stop. It is designed for brazed or soldered connections in copper tubing systems, rated for use with water, gas, and steam up to 850 °F.
Where to buy NIBCO 601 4 couplings worldwide?
3G Electric supplies NIBCO 601 4 wrot copper couplings to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this and other NIBCO fittings across our 14 industrial departments.
How to install a NIBCO sweat fitting coupling?
Clean the tube end and fitting cup with emery cloth, apply flux, insert tube to the dimple center stop, and heat evenly until solder flows into the joint. Allow to cool naturally. Always follow local plumbing codes and use lead-free solder for potable water systems.
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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.









