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Watts® LF210-5-M2 3/4" Automatic Temperature Gas Shutoff Valve

by Watts
SKU LF210-5-M2
Original price $319.00 - Original price $319.00
Original price
$319.00 - $319.00
Current price $319.00

Series LF210-5 automatic gas shutoff valves are positive-acting energy shutoff for the emergency temperature protection of gas water heaters. They are self-contained devices independent of all other operating controls. They provide protection against overheating water in the domestic hot water supply heating systems by automatically shutting off the gas supply to the heater in the event that the water temperature reaches 210°F (99°C). Series LF210-5 must be manually reset in order to resume heater service. This feature serves as a warning of malfunctioning of the normal operating controls. Manual resetting is easily done and does not require dismantling or replacing of any part of the valve. See Reset Button feature. The LF210-5 features Lead Free construction to comply with Lead Free installation requirements. This gas shutoff differs from other contemporary design in that Watts engineers have embodied the time tested Watts auto-thermatic thermal actuator principle along with a snap-acting trip latch which closes the valve at a definite controlled temperature. Models LFL210-5 M2, LFLL210-5 M2 and LFLLL210-5 M2 feature extended shanks for up to 2 inch thick insulation for use with the new generation of water heaters containing extra thick insulation.


  • Seating - Buna N disc to metal seating assures positive seal forshutting off the gas to burner in the event of high watertemperature conditions
  • Reset Button - After operating from high temperature, the gasshutoff must be manually reset (opened). Pressing the reset buttonin as far as it will go and then releasing, opens the valve and allowsgas to again flow to the burner
  • Trip Latch Assembly - Snap acting latch releases the valve to closedat a definite controlled temperature. Stainless steel spring seatsvalve when trip latch releases valve to closed position
  • Thermostat - Operates trip latch in response to water temperature.

All orders take about 2-24 business hours to process and ship out. All packages will ship Monday-Friday.

Your order will be packaged with care and discretion. Items are securely wrapped to prevent shifting while in transit.

When your order is shipped, you will receive an email notification which includes a tracking number. You can also track your order through your profile page here.

Orders Over A Certain Weight Are Subject To Pallet Deliveries Which Could Be Subject To Higher Shipping Costs, However Shipping Speeds Remain The Same 1-4 Days, Depending On Location.

Please note: Tracking numbers often take up to 24 hours to be recognized by carriers. If you attempt to track your order and the tracking number returns a non-trackable message, please try again later as your tracking number may not have yet been fully recognized by your carrier. 

-We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

-Please note: After 30-Days a Restocking Fee will be applied to all returns after 30-Days.
-To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
-To start a return, you can contact us at or come in-store. 
- Items sent back to us without first requesting a return will not be accepted.

-Unfortunately, WE CANNOT accept returns on Clearance, Sales Items & Gift Cards

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

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