LF210-5 Lead Free Automatic Gas Shutoff Valve

Manufactured by: Watts Water Technologies

Model: LF210-5

Watts Series LF210-5 Lead Free* Automatic Gas Shutoff Valves are used in gas water heater applications to protect against overheating water in the domestic hot water supply heating system.

It is an immersion-type valve that automatically shuts off the gas supply to the heater if the temperature reaches 210°F. It is a self-contained device that consists of Buna-N disc-to-metal seating, manual reset button to reopen the valve after an automatic shutoff, trip latch assembly and stainless steel spring seats to close the valve at a controlled temperature, and thermostat with extension tube which operates trip latch in response to water temperature.

Design certified by CSA. Models LFL210-5 M2 and LFLL210-5 M2 feature extended shanks for use with water heaters containing extra thick insulation, up to 2 1/2 in.

Models

LF210-5 M2 Suitable for water heaters with up to 3⁄4" of insulation
LFL210-5 M2 Suitable for water heaters with up to 2" of insulation
LFLL210-5 M2 Suitable for water heaters with up to 21⁄2" of insulation
LFLLL210-5 M2 Suitable for water heaters with up to 3" of insulation

Gas Capacity

C.S.A. listed ratings of this valve are:

For use with natural gas 150,000 BTU/hr.
For use with liquified petroleum gas 243,000 BTU/hr.

Additional Information

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Technical Data

Available Sizes:
3/4in

Connection Types:
Threaded

Standard Available Pressure Settings:
210 psi

See product datasheet for additional details

Features

Seating - Buna N disc to metal seating assures positive seal for shutting off the gas to burner in the event of high water temperature conditions
Reset Button - After operating from high temperature, the gas shutoff must be manually reset (opened). Pressing the reset button in as far as it will go and then releasing, opens the valve and allows gas to again flow to the burner
Trip Latch Assembly - Snap acting latch releases the valve to closed at a definite controlled temperature. Stainless steel spring seats valve when trip latch releases valve to closed position Thermostat - Operates trip latch in response to water temperature
Thermobulb, temperature sensitive portion, is at end of extension tube for accurate response to tank temperature