FR500 Thermostatic Freeze Relief Kit
Manufactured by: Watts Water Technologies
Model: FR500
Series FR 500 Thermostatic Freeze Relief Kits are designed to keep water from freezing in the backflow preventer, while avoiding discharges based on the air temperature dropping below freezing. Series FR 500 thermostatically measures the water temperature and opens at 35°F (1.6°C) and closes at 40°F (4.4°C). Maximum Working Pressure: 175psi (12.06 bar).