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LF3L Watts

Lead Free*Poppet Type Pressure Relief Valves for Protection Against Excessive Pressure

Series LF3L Lead Free* Poppet Type Pressure Relief Valves are used for protection against excessive pressure on domestic storage tanks or tankless water heaters. Similar in construction to Watts Model LF10L, the Model LF3L has no temperature relieving element. Pressure range is 75-150psi (5.2-10.3 bar). Series LF3L comes in standard settings of 75, 100, 125 and 150psi (5.2, 6.9, 8.6 and 10.3 bar). These pressure relief valves are popularly used in conjunction with the Model LF210 gas shutoff valve on gas water heaters to shut off gas to heater if water heater temperature exceeds 210 degreeF (99 degreeC). The LF3L features Lead Free* construction to comply with Lead Free* installation requirements.


  • Lead Free* copper alloy body
  • Furnished with test lever
  • Poppet-style valve protects domestic storage tanks and tankless water heaters from excessive pressure
  • 3/4 in. (20mm) size

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific LF3L