LF40L, LF40XL Lead Free Automatic Re-seating Temperature and Pressure Relief Valve
Watts Series LF40L, LF40XL 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 Lead Free* brass 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 LF40L has a short thermostat for installation directly in available tank tapings. Model LF40XL has an extension thermostat for installation in the hot water outlet within the allowable distance from the top of the tank.
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** Territory restrictions apply for most products.
75 psi to 150 psi
3/4in, 1in, 1-1/4in, 1-1/2in, 2in
Standard Available Pressure Settings:
75 psi, 100 psi, 125 psi, 150 psi
See product datasheet for additional details