Watts 40XL-8-3/4 Temperature and Pressure Relief Valve

Watts 40XL-8-3/4 Temperature and Pressure Relief Valve delivers reliable safety for commercial water heaters with automatic reseating and self-closing operation. The bronze-bodied valve features 3/4 inch inlet and outlet connections and is designed to relieve excess pressure and temperature safely.

Key specifications include a set pressure range of 150–210 PSI, a temperature rating of 210°F, and a working pressure range of 75–150 PSI. Inlet size is 3/4 inch and outlet size is 3/4 inch, with an end connection of Male Threaded x Female Threaded. The thermostat length is 8 inches, and the overall dimensions are 2-5/8 inches wide by 5-5/8 inches high.

• Self-closing, automatic reseating operation for continuous protection
• Extension thermostat included (8 inch) for accurate sensing
• Test lever for easy verification of operation
• Non-mechanical seat-to-disc alignment for reliability
• Tamper-resistant bonnet screw for added security
• Bronze body with 3/4 in inlet/outlet connections
• End connection: Male threaded x Female threaded
• Ideal for commercial water heater applications
• Standards compliance: ANSI Z21.22, ASME, CSA, ASSE, FM, NSF, UL, ULC, USC, NB, HV, FHA, MIL-V 136-12D, Type 1