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Water Safety & Flow Control


Lead Free* non-Calibrated Pressure Relief Valves

Lead Free* Models Available


1/2, 3/4 or (15 or 20mm)


Series LF53 Lead Free* ressure Relief Valves are spring operated Lead Free* brass relief valves designed to be used only as protection from the build up 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).

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Disclaimer: Watts product dimensions in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

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*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

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