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The LARSEN SUPPLY CO., INC. 17-6431 is a 3/8-inch brass compression tee designed for joining copper or compatible tubing in a three-way split configuration. The fitting uses a compression-style connection, eliminating the need for soldering or special tools at the joint. Constructed from brass, it provides reliable corrosion resistance and durability in pressurized water supply lines. This fitting is a standard stock item for licensed plumbers and experienced DIYers working on residential or light commercial water distribution systems.
This compression tee is suited for use in residential potable water supply lines, fixture supply connections, and similar low-to-medium pressure plumbing applications where a branch takeoff is required. The compression fitting style makes it well-suited for retrofit and repair work where sweating a joint is not practical. It ships in a carded retail-ready format and is sold in packages of six units, making it practical for both single-job use and stocking service vans.
Designed as an OEM-style replacement and standard-stock compression fitting for 3/8-inch tubing in residential and light commercial plumbing water supply systems.
Installation should be performed by a licensed plumber or qualified tradesperson in accordance with local plumbing codes and the IPC. Shut off the water supply and relieve line pressure before cutting or disturbing any existing tubing. Ensure tubing ends are cut square and deburred before seating the compression nut and ferrule. Do not overtighten compression nuts, as this can deform the ferrule and cause leaks.
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