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WATTS® 156731 Temperature and Pressure Relief Valve, 3/4 in Nominal, MNPT x FNPT Connection, 1-Port -Port/Way, 210 deg F
- Actuator Type: Lever
- Body Material: Bronze
- Connection Type: MNPT x FNPT
- Dimensions: 2-5/8 in W
- Manufacturer: WATTS®
- Nominal Size: 3/4
- Number Of Ports/Ways: 1-Port
- Temperature Rating: 210
Watts Regulator series 40L, 40XL automatic reseating temperature and pressure relief valves are used in commercial water heater applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters. They feature a bronze body with NPT male inlet and NPT female outlet connections, unique thermostat with special thermo-bonded coating, tamper-resistant bonnet screws, automatic reseating feature, and test lever. Model 40L has a short thermostat for installation directly in available tank tapings. Model 40XL has an extension thermostat for installation in the hot water outlet within the allowable distance from the top of the tank. Series 40L, 40XL valves are ASME rated and CSA listed.
- Features
- The combined 2-in-1 temperature and pressure relief valve provides the least expensive and proven means for protection against both excessive temperature and pressure emergency conditions
- Fully automatic temperature and pressure relief protection for domestic hot water supply tanks and heaters
- Non-mechanical seat-to-disc alignment
- Thermostat is accurate and proven and exclusively designed and manufactured by Watts
- Tamper resistant bonnet screws
- STANDARD_APPROVALS: ANSI Z21.22, ASME section IV, C/US CSA Certified, HV Certified, MIL-V- 136-12D type I, NB
- APPLICATION: For commercial water heaters
- INCLUDES: Test Lever and Extension Thermostat for Installation in Hot Water Outlet Within the Allowable Distance From the Top Of the Tank