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The UPONOR 39169 is a 1-inch PEX-A expansion ring and sleeve designed for use with PEX-A tubing systems in radiant heating, hydronic distribution, and potable water plumbing installations. These rings work with the expansion fitting method, where the ring and pipe end are expanded simultaneously before the connection is made, allowing the tubing and ring to compress tightly around the fitting as the PEX-A material recovers. Each bag contains 10 rings, making it a practical quantity for rough-in work on larger jobs. Licensed plumbers and hydronic technicians are the typical installers for this type of component.
These expansion rings are suited for residential and light commercial plumbing and radiant heating systems where 1-inch PEX-A tubing is specified. The expansion connection method is commonly used in manifold-based distribution systems, snowmelt loops, and domestic hot and cold water supply lines. The rings are sold in bags of 10, allowing installers to stock an appropriate quantity for multi-connection runs without over-ordering.
Designed as an OEM-style replacement and standard supply component for 1-inch PEX-A tubing expansion fitting systems in residential and commercial plumbing and radiant heating applications.
Installation should be performed by a licensed plumber or hydronic technician in accordance with local plumbing codes and manufacturer guidelines. Shut off and depressurize the water supply before beginning any work on an active system. The expansion method requires a compatible PEX-A expansion tool sized for 1-inch tubing; do not use crimp or clamp tools with these rings. Allow adequate recovery time after expansion before pressurizing the connection.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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