Working principle of manual solenoid valve, function of manual solenoid valve

Manual solenoid valve The role of

Solenoid valves with manual functions are mainly used when the solenoid valve coil loses power or burns out. The manual handle can be used to achieve Solenoid valve opens and closes;easy to operate, high performance Stable;piston structure, good sealing;refined coil, not easy to burn.

Working principle of manual solenoid valve

Manual control: 1. When the handle arrow is parallel to the valve body flow direction arrow, the electromagnetic The valve is set to computer automatic control. 2. When the handle arrow rotates 90 degrees clockwise, the solenoid valve opens. At this time, the solenoid valve has been converted to manual control. According to the stainless steel limit groove, when rotated 90 degrees counterclockwise, the solenoid valve is closed.

Automatic control: 1. When the solenoid valve coil is energized, the moving iron core is closed and the pilot hole is in an open state, which depressurizes the upper chamber of the piston. The main piston opens due to the medium pressure difference and the medium circulates. 2. When Solenoid valve coil When the power is off, the moving iron core returns by the spring, the pilot hole is closed, and the upper chamber of the piston is released, and the main piston is The medium pressure difference is closed and the medium is cut off.

Working principle of ordinary solenoid valve with manual function

Normally open type: When the valve needs to be automatically controlled, the manual handle must be in the open state;when the coil loses power, the manual handle can be rotated to control Valve switch.

Normally closed type: When the valve needs to be automatically controlled, The manual handle must be in a closed state;when the coil is de-energized, the valve switch can be controlled by rotating the manual handle.

Working principle of alarm with manual solenoid valve

A: When the valve needs to be opened, unscrew the protective cover (there is a threaded hole in the middle of the protective cover, and screw it on the linkage rod as a handle Use), pull the handle hard, and the valve opens.

B: When the valve needs to be closed, the coil is not energized. Over 30 seconds, the valve closes quickly.

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