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The principle and characteristics of each type of electromagnetic stainless steel

According to the principle of classification, electromagnetic stainless steel can be roughly divided into three categories. Jinzeli Xiaobian tells us today the principles and characteristics of each category of electromagnetic stainless steel. We hope to provide you with a little technical help in order to make better use of the various major The field creates greater gains.
First, direct-acting electromagnetic stainless steel
1. Principle:
When energized, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat and the valve opens;
When the power is turned off, the electromagnetic force disappears, the spring presses the closing member against the valve seat, and the valve closes.
2, features:
In the vacuum, negative pressure, zero pressure can work normally, but the diameter generally does not exceed 25mm.
Second, step-by-step direct-acting electromagnetic stainless steel
1. Principle:
It is a combination of direct acting and pilot type. When there is no pressure difference between the inlet and the outlet, the electromagnetic force directly lifts the pilot small valve and the main valve closing part and the valve opens. When the inlet and outlet reach the starting pressure difference, after the power is turned on, the electromagnetic force leads the small valve, the pressure in the lower chamber of the main valve rises, and the pressure in the upper chamber decreases, thereby utilizing the pressure difference to push the main valve upward;
When the power is off, the pilot valve pushes the closing member using spring force or medium pressure and moves downward to close the valve.
2, features:
Zero pressure differential or vacuum, high pressure can also act reliably, but the power is relatively large, requiring horizontal installation.
Three, pilot solenoid valve
1. Principle:
When energized, the electromagnetic force opens the pilot hole and the pressure in the upper chamber drops rapidly, forming a low-to-high differential pressure around the closing member. The fluid pressure pushes the closing member upward and the valve opens;
When the power is turned off, the spring force closes the pilot hole and the inlet pressure rapidly bypasses the bypass hole to form a low-to-high pressure difference around the valve closing member. The fluid pressure pushes the closing member downward and closes the valve.
2, features:
The upper limit of the fluid pressure range is high and can be installed arbitrarily (to be customized) but the fluid pressure difference must be met.

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