Bleeder valves or modulating valves, bleed off near freezing water from exposed piping and allow the system to refill with warmer re-supply water. The bleeder valve will close when the temperature of the water or fluid is above the set point and the danger of freezing is over. Drain valves are typically positive action valves that open or release at a set temperature. The valve does not close until the system is completely drained and the valve can be manually closed or reset. Refer to our HAT/FP valves or FPP valves for additional information on bleeder or drain type valves.

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