NIBCO Sweat Fitting Union: 3/8 in CTS x 3/8 in Pipe, Cup x MNPT, Bronze (MPN 7334-3/8)
SKU 3G-OTH-469320
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Frequently Asked Questions
What is a NIBCO sweat fitting union used for?
A NIBCO sweat fitting union connects two copper pipes in plumbing and HVAC systems, allowing easy disconnection for maintenance. This bronze union joins 3/8 in CTS tubing to a 3/8 in male NPT threaded pipe, providing a leak-resistant seal in potable water and hydronic heating applications.
What are the specifications of the NIBCO 7334-3/8 union?
The NIBCO 7334-3/8 is a cast bronze sweat fitting union with a cup x MNPT configuration. It connects 3/8 in CTS copper tube to a 3/8 in male NPT threaded pipe. The bronze construction resists corrosion, making it suitable for water and heating systems.
Where to buy a NIBCO sweat fitting union worldwide?
3G Electric supplies the NIBCO 7334-3/8 sweat fitting union to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this bronze union.
How to install a NIBCO sweat fitting union?
To install a NIBCO sweat fitting union, clean and flux the copper tube ends, then heat the cup end evenly until solder melts into the joint. For the threaded side, apply pipe thread sealant to the male NPT and tighten securely. Always follow local plumbing codes for safe installation.
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Common applications for NIBCONIBCO Products
3G Electric supplies NIBCO cast copper & bronze tube fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









