Oatey p9791a Slip Joint Extension Tube 1-1/4 X 12 in

Product Description

The OATEY p9791a is a 1-1/4-inch by 12-inch slip joint extension tube made from polypropylene, designed for use in tubular drain assemblies beneath sinks and lavatories. This extension tube provides the added length needed to connect P-traps and drain tailpieces when standard components fall short. The slip joint connection allows for tool-free adjustment during fitting and relies on a compression washer to create a watertight seal. Licensed plumbers and experienced DIYers install this type of fitting as part of routine drain rough-in and fixture replacement work.

This extension tube is suited for residential and light commercial drain applications where 1-1/4-inch tubular drain systems are in use. Typical install scenarios include vanity sink drain extensions, laundry standpipe connections, and any situation where the distance between the drain tailpiece and the trap arm requires additional tube length. The white polypropylene construction resists common drain chemicals and moisture exposure under-cabinet conditions.

Key Features

• 1-1/4-inch diameter slip joint connection for adjustable, tool-free fitting
• 12-inch length provides added reach in deeper cabinet or wall configurations
• Polypropylene construction resists corrosion and common drain chemicals
• White finish blends with standard under-sink drain assemblies
• Compression washer sealing reduces the risk of joint leaks

Compatibility

Designed as an OEM-style replacement and standard component for 1-1/4-inch residential and light commercial tubular drain systems.

Installation Notes

Installation is typically performed by a licensed plumber or qualified tradesperson as part of sink drain assembly or replacement. Shut off the water supply and clear standing water from the drain before beginning work. Hand-tighten slip joint nuts to seat the washer, then snug with channel-lock pliers — avoid over-tightening polypropylene fittings, which can crack the nut or distort the tube. Verify local plumbing code compliance, as some jurisdictions governed by the IPC or UPC have specific requirements for tubular drain materials and configurations.

Technical Specifications

• Diameter: 1-1/4 inches
• Length: 12 inches
• Material: Polypropylene
• Connection Type: Slip Joint
• Color / Finish: White
• Weight: 0.1 pounds
• Country of Origin: TH

Standard Information

• Brand: OATEY
• Manufacturer Part Number: p9791a