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The CAMBRIDGE RESOURCES 506172 is a black reducing coupling designed to connect pipes of two different diameters in a single fitting. It transitions from a 1-1/2 inch pipe to a 1-1/4 inch pipe, making it a practical solution for drainage, vent, and supply line configurations where pipe sizes change along a run. The black finish is standard for this fitting type and is suitable for a range of piping applications. Licensed plumbers and pipefitters install this type of coupling as part of new construction rough-in or repair work requiring a size reduction in the line.
This reducing coupling is suited for residential and light commercial plumbing installations where a step-down connection between 1-1/2 inch and 1-1/4 inch pipe is required. It is sold as a single unit, making it easy to order the exact quantity needed for a specific job. Typical applications include drain line transitions, supply branch connections, and other threaded or slip-fit piping scenarios depending on the end connection type of the fitting.
Designed as an OEM-style replacement or new-installation fitting for plumbing systems requiring a 1-1/2 inch to 1-1/4 inch pipe size reduction.
Installation should be performed by a licensed plumber in accordance with the applicable International Plumbing Code (IPC) or local plumbing authority requirements. Shut off the water supply and depressurize the line before removing any existing fittings. Ensure pipe ends are clean and free of burrs before making the connection. Do not overtighten threaded fittings, as this can crack the fitting body.
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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