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The MUELLER INDUSTRIES 160-307 is a brass compression coupling designed to join two lengths of tubing or pipe in a secure, leak-resistant connection. This fitting uses compression-style ends that seat against tubing walls when the nuts are tightened, creating a reliable mechanical seal without soldering or threading. At 1.5 inches, it is sized for common residential and light commercial plumbing and hydronic applications. Licensed plumbers and pipefitters are the primary installers of this type of fitting.
This compression coupling is suited for water supply lines, hydronic heating loops, and general plumbing rough-in or repair work where a solder-free connection method is required or preferred. The 1.5-inch size accommodates standard tubing of that nominal diameter in typical residential and light commercial installations. It is commonly used in retrofit and repair scenarios where heat or open flame is not permitted or practical.
Designed as an OEM-style replacement or direct-use compression fitting for 1.5-inch nominal tubing in residential and light commercial plumbing systems.
Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the IPC. Shut off the water supply and relieve line pressure completely before cutting into any existing piping. Use a tubing cutter to produce a clean, square cut on the pipe ends before seating the compression nuts. Do not overtighten compression nuts, as this can deform the ferrule and cause leaks.
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