NIBCO Sweat Fitting Adapter: 1 1/2 in CTS x 1 1/2 in Pipe, Cup x FNPT
SKU 3G-OTH-473584
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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 drain, waste, and vent systems. The cup end solders onto 1 1/2 in CTS copper tube, while the FNPT end threads onto 1 1/2 in pipe, providing a reliable transition in plumbing applications.
What are the specifications of the NIBCO 903-11/2 sweat fitting adapter?
The NIBCO 903-11/2 is a wrot copper adapter with a cup x FNPT connection. It fits 1 1/2 in CTS copper tube on the cup end and 1 1/2 in pipe on the female NPT threaded end. This part is used for drain, waste, and vent systems.
Where to buy NIBCO sweat fitting adapters worldwide?
3G Electric supplies NIBCO sweat fitting adapters like the 903-11/2 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this wrot copper fitting.
How to install a NIBCO sweat fitting adapter?
To install a NIBCO sweat fitting adapter, clean the copper tube end and apply flux. Heat the cup end evenly and apply solder until it flows into the joint. For the FNPT end, use thread sealant and tighten to standard torque. Always follow local plumbing codes.
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Common applications for NIBCONIBCO Products
3G Electric supplies NIBCO drain, waste & vent wrot copper & bronze tube fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









