CLA-VAL 50-55F : Pressure Relief Valve with High Opening Speed and Progressive Closing Speed
The CLA-VAL 50-55F is typically installed on a main line by-pass and discharges any overpressure produced eventually at starting or stopping of the pump(s). When the pumping system is started and stopped gradually, harmful surges does not occur. However, should an electric power failure take place, the abrupt stopping of the pump(s) can cause dangerous surges in the system which could result in severe equipment damage.
The CLA-VAL 50-55F damps the respective overpressure and prevents any additional surge build-up by its controlled closure.

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