
T&S Brass B-3952 3-1/2 Inch Twist Handle Waste Drain Valve
T&S Brass B-3952 Waste Drain Valve Twist Handle 3-1/2 x 2 In.
The T&S Brass B-3952 is a twist-handle waste drain valve built for commercial sinks with a 3-1/2 inch drain opening. It handles drainage on prep sinks, pot sinks, and three-compartment sinks where a simple, operable drain control is required — a common need in restaurant kitchens, cafeterias, and institutional dishrooms. This rotary valve replaces older T&S models B-3913 and B-3917, making it a direct swap on existing T&S-equipped sinks.
- Cast bronze body with rough chrome plating — built for the corrosion and heat exposure common in commercial sink applications
- Twist handle with heat-resistant plastic grip opens and closes the drain without tools
- 2-inch NPT male outlet and 1-1/2-inch NPT female outlet give flexibility for connection to standard commercial drain lines
- Rated at 17 GPM flow rate and handles water temperatures from 40°F up to 180°F — sufficient for hot-water sanitizing sinks
- Includes a 3-1/2-inch snap-in removable strainer and an overflow outlet with cap and sealing washer
- Certified to ASME A112.18.2/CSA B125.2; overall height 4-1/2 inches
A plumber or facilities manager replacing a failed drain valve on a commercial three-compartment sink will find this a straightforward fit — confirmed T&S specs, standard NPT connections, and the accessories needed to complete the installation are all in the box.
Specifications
| Drain Opening Size | 3-1/2 in |
|---|---|
| Outlet Connections | 2 in NPT male / 1-1/2 in NPT female |
| Replaces Models | B-3913, B-3917 |
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information, visit
www.P65Warnings.ca.gov.



