Hydraulic control valve
Hydraulic control valves are direct – sealing diaphragm valves activated by pipeline pressure. When in the control chamber pressure is equal to the pipeline pressure the rubber diaphragm closes the valve. The spring in the upper side of diaphragm helps valve to close regardless of pressure and flow conditions. Expancing the pressure from control chamber ,valve opens.
The valve’s only moving part is its diaphragm.
