What is a FESTO pilot solenoid valve
FESTO pilot-operated solenoid valve, when energized, relies on electromagnetic force to lift the valve stem, and the pilot valve port opens. At this time, the upper chamber of the solenoid valve is relieved by the pilot hole, forming a pressure difference between the upper and the lower core, which is in the pressure difference. Under the action, the fluid pressure pushes the main spool upward to open the main valve port; when the power is off, under the action of the spring force and the gravity of the main spool, the valve stem is reset, the pressure of the upper chamber of the solenoid valve is raised, and the fluid pressure pushes the main valve. The core moves down and the main valve port closes.
FESTO pilot solenoid valve principle
For mediums with zero differential pressure or self-flowing state, direct-acting solenoid valves are generally used for small diameters; there is a pressure difference before and after the valve, and a pilot solenoid valve is used for large diameters.
FESTO pilot solenoid valve features
The upper limit of the fluid pressure range is high and can be installed at will (customized) but must meet the fluid pressure differential conditions.
Pilot diaphragm structure, low function.
The protective diaphragm structure is designed to extend life by a factor of two.
The piping method can be installed at any angle. For the purpose of enhancing the life, it is preferable that the horizontal pipe connecting coil is upward.
Coil protection class IP65.
Applicable medium: liquid, water, hot water, gas, oil, gas, etc.
The above content was provided by A&S Solenoid Valve Co., Ltd.