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The OATEY p9137c is a 1.5-inch by 15-inch polypropylene sink waste arm designed for tubular drain applications in residential and light commercial plumbing. The slip joint connection allows for tool-free adjustment during installation, making it a practical choice for connecting a sink drain basket or P-trap assembly to a wall or cabinet drain stub-out. At 0.268 pounds, the white PVC-style polypropylene construction resists corrosion and keeps the assembly lightweight. Licensed plumbers and experienced DIYers working on lavatory or kitchen sink drain rough-in or replacement will find this a straightforward drop-in component.
This waste arm is suited for standard tubular drain configurations found under kitchen and bathroom sinks. It is commonly used when running the horizontal drain leg from a P-trap to the wall drain inlet. The 1.5-inch diameter and 15-inch length make it compatible with typical residential sink cabinet depths. The white finish blends with standard white PVC drain trim visible under open cabinetry.
Designed as an OEM-style replacement or new-install component for 1.5-inch tubular drain systems in residential sink waste applications.
Installation is typically performed by a licensed plumber or qualified tradesperson following IPC and local plumbing code requirements. Shut off water supply and clear standing water from the trap before disassembling existing drain components. Slip joint nuts should be hand-tightened first to confirm alignment, then snugged with slip joint pliers — avoid over-tightening polypropylene fittings, which can crack the nut or distort the sealing surface. Inspect the slip joint washer for wear and replace if compressed or deformed before completing the assembly.
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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