Oatey 817ETBN-3 Branch Tailpiece 1-1/4 in Brass

Product Description

The OATEY 817ETBN-3 is a branch tailpiece designed for drain line assemblies under sinks and lavatories. It connects a secondary drain inlet to the main drain run, allowing two fixtures to share a single trap or drain outlet. Constructed from brass at 20 gauge, this tailpiece uses a slip joint connection on one end and a hose and clamp connection on the branch inlet. It is sized for 1-1/4 inch pipe and measures 8 inches in length. Plumbers and drain installation specialists select this type of fitting when roughing in or servicing residential or light commercial lavatory drain systems.

This branch tailpiece is suited for residential bathroom and kitchen drain assemblies where a secondary fixture drain must be tied into an existing tailpiece run. Typical applications include connecting an overflow or secondary basin drain into a common trap arm. The slip joint design allows for easy adjustment during installation, while the hose and clamp branch inlet accommodates flexible drain tubing connections. It is commonly used in new construction and remodel work where drain alignment requires field adjustment.

Key Features

• Branch inlet accommodates a secondary drain connection via hose and clamp
• Slip joint connection allows in-field length and alignment adjustment
• Brass construction at 20 gauge for corrosion resistance in wet drain environments
• 1-1/4 inch pipe size fits standard lavatory and sink drain configurations
• 8 inch length suits typical under-sink drain rough-in clearances

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1-1/4 inch slip joint drain assemblies in residential and light commercial sink and lavatory applications.

Installation Notes

Installation is typically performed by a licensed plumber or qualified drain installation technician. Shut off the water supply and clear standing water from the drain line before beginning work. Slip joint nuts should be hand-tightened first to confirm alignment, then snugged with pliers — avoid over-tightening, which can crack slip joint nuts. Verify local plumbing code compliance, referencing IPC guidelines for drain assembly requirements.

Technical Specifications

• Pipe Size: 1-1/4 inches
• Length: 8 inches
• Gauge: 20 ga
• Connection Type: Slip Joint and Hose and Clamp
• Material: Brass

Standard Information

• Brand: OATEY
• Manufacturer Part Number: 817ETBN-3