Pre-adjustable fill valves
553 series pre-adjustable valves can be pre-set to the required pressure value prior to charging the system.
553 series pre-adjustable fill valve is available with an optional system pressure indicator. These valves are used on closed-loop hydronic systems to automatically fill and maintain system pressure. It can be pre-set to the required pressure value prior to charging the system. The valve fast fills and stops automatically when the set pressure is reached, with no lever to flip or valves to close. The pressure indicator is mounted after the built-in check valve to allow visual monitoring of system pressure.
Caleffi
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