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LF53 Watts

Lead Free* non-Calibrated Pressure Relief Valves

Series LF53 Lead Free* Pressure Relief Valves are spring operated Lead Free* brass relief valves designed to be used only as protection from the buildup of excessive pressure in systems containing water, oil, or air. These valves are not ASME approved safety relief valves and should not be used in system applications with this requirement. They feature a Lead Free* brass construction with stainless steel springs. Series LF53 is factory preset to standard pressure settings of 75, 100 or 125 psi(5.2, 6.9 or 8.6 bar).


  • Lead Free* cast copper silicon alloy body
  • Poppet-style valve protects domestic storage tanks and tankless water heaters from excessive pressure
  • Furnished with test lever
  • 1/2 in. (15mm) size

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Select options below to identify the UPC, Order Code, and Repair Kit for a specific LF53