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宿迁Iron shell coil 10 stainless steel solenoid valve

2021-06-05 15:18:47
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宿迁Iron shell coil 10 stainless steel solenoid valve
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Looking back at the development history of solenoid valves at home and abroad, there are currently three types of solenoid valves in action: direct-acting, recoil, and pilot-operated. From the difference in disc structure and material, and the difference in principle, recoil is also Can be divided into: diaphragm type recoil solenoid valve, two-position three-way solenoid valve manufacturer piston recoil solenoid valve; pilot recoil solenoid valve can be divided into: diaphragm type pilot diaphragm solenoid valve, pilot type Piston solenoid valve; from the perspective of the type of valve seat and sealing material, it can be divided into: soft-sealed solenoid valve, steel-sealed solenoid valve, and semi-steel-sealed solenoid valve.


Direct acting solenoid valve.


Working principle: When the normally closed direct-acting solenoid valve is energized, the solenoid coil generates electromagnetic attraction, which lifts the valve core, so that the closing part leaves the valve seat and the sealing valve opens; after the power is off, the electromagnetic force disappears, and the closing element is pressed by the force of the spring Hold the valve seat to close. (Contrary to normally open type)


Features: It can work normally under vacuum, negative pressure and zero pressure difference. It can be installed arbitrarily under DN50, and the electromagnetic head is large.


2. Reverse solenoid valve.


Working principle: Its principle is a combination of direct action and pilot. When energized, the solenoid valve first opens the auxiliary valve. The pressure in the lower chamber of the main valve is greater than the pressure in the upper chamber. The pressure difference and the solenoid valve are used simultaneously to open the valve. ; When the power is off, the auxiliary valve of the two-position three-way solenoid valve uses spring force or medium pressure to push the closing piece, and moves downward to close.


Features: It can work reliably under zero pressure difference or high pressure, but the power and volume are large, and vertical installation is required.


Iron shell coil 10 stainless steel solenoid valve

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