Pump Control Valves protect pumps, pipelines, and other system components by isolating the pipeline from the sudden velocity changes associated with pump starting and stopping.
The “Active Check Valve” logic of operation, is the method of pumping system control that prevents surges rather than eliminating them.
Abrupt pump stopping is followed by a pressure drop as the water column continues traveling along the line.
The returning column hits the closed pump check valve, creating a high pressure surge wave, which travels at up to 4 Mach.
Eliminating such surge requires anticipation and pre-action.
Surge Anticipating Valves react to the pressure drop, accepting the returning column while already open, thus eliminating the surge.
Float controlled valves combine the advantages of excellent hydraulic control valves with the simplicity of mechanical floats.
The ability to separate the main valve from the float enables eliminating most of the installation and maintenance problems associated with mechanical float valves.
Level Control Valve with Modulating Horizontal Float is used to control reservoir filling to maintain constant water level regardless of fluctuating demand.
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