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Pilot-operated solenoid valve, let me explain to you the pilot solenoid valve

The pilot solenoid valve is easy to operate and easy to open and close. The low temperature liquid solenoid valve is one of the fastest growing valve types in the past decade. When the main valve port is opened, the valve is in the passage. When the coil is de-energized, the magnetic field disappears, the movable iron core is reset, the pilot valve port is closed, and the pressure in the pilot valve and the main valve chamber is balanced, and the valve is closed again. The use of a direct-acting diaphragm structure without pressure start expands the field of use, and the flat diaphragm structure is reliably opened and closed, and the service life of the product is enhanced. The use of plastic-sealed coils enhances the safe use of this product in a wide range of environments. There are through holes at different positions, each of which leads to a different oil pipe, the valve is in the middle of the cavity, and the two sides are two electromagnets, which side of the magnet coil is energized to which side.
The pilot-type solenoid valve not only has a simple structure and good sealing performance, but also has a small volume, light weight, low material consumption, small installation size, and small driving torque in a certain nominal passage range, and the use of ball valves in industrialized countries and the like. Very wide, the variety and quantity of use continue to expand, and the development of high temperature, high pressure, large mouth, high sealing, long life, excellent regulation performance and multi-valve direction, the two have channels, when the solenoid valve When the coil is energized, the moving iron core and the static iron core are attracted to open the pilot valve hole, and the pressure of the back cavity of the valve core flows through the pilot valve hole to the outlet. At this time, the pressure of the back cavity of the valve core is lower than the inlet pressure, and the spool is utilized by the pressure difference. Out of the main valve port, the medium flows from the inlet to the outlet. When the coil is de-energized, the moving iron core is separated from the static iron core, and the pilot valve hole is closed. The pressure of the back cavity of the valve core is gradually balanced with the inlet pressure by the inlet pressure, and the valve core is tightly closed by the spring force. The pressure difference is used to disengage the spool from the main valve port, and the medium flows from the inlet to the outlet. When the coil is de-energized, the moving iron core is separated from the static iron core, and the pilot valve hole is closed. The pressure of the back cavity of the valve core is gradually balanced with the inlet pressure by the inlet pressure, and the valve core is tightly closed by the spring force.

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