Freeze Relief Valves
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Reduce freezing effect of backflow and pipes with freeze relief valves from Grainger. It thermostatically measures the water temperature and will open at 35 degrees F, and close at 40 degrees F. It is designed to keep water from freezing in the backflow preventer, while avoiding discharges based on air temperature dropping to or below freezing. Get your freeze relief valves from Grainger!