SUNNY Solenoid Direction Control Valve 4WE6J61EG24NK4F6LS for Pump Truck Parts

Product Description/Features:
   

Solenoid valves are divided into three categories in principle:

Direct acting solenoid valve
Principle: When energized, the electromagnetic force generated by the electromagnetic coil lifts the closing part from the seat, and the valve opens; When the power is off, the electromagnetic force disappears, the spring presses the closing part on the seat, and the valve is closed.
Features: It can work normally under vacuum, negative pressure and zero pressure, but the diameter is generally not more than 25mm.

Step direct acting solenoid valve
Principle: It is a combination of direct action and pilot principle, when there is no pressure difference between the inlet and the outlet, after the power is turned on, the electromagnetic force directly lifts the pilot small valve and the main valve closing part in turn, and the valve opens. When the inlet and outlet reach the starting pressure difference, after power, the electromagnetic force pilot small valve, the main valve lower chamber pressure rises, the upper chamber pressure drops, so as to use the pressure difference to push the main valve upward; When the power is off, the pilot valve uses spring force or medium pressure to push the closing part and moves downward to close the valve.
Features: It can also be operated at zero pressure difference or vacuum and high pressure, but the power is large, and it must be installed horizontally.

Pilot operated solenoid valve
Principle: When energized, the electromagnetic force opens the pilot hole, the pressure of the upper chamber drops rapidly, forming a low and high pressure difference around the closing part, the fluid pressure pushes the closing part to move upward, and the valve opens; When the power is off, the spring force closes the pilot hole, and the inlet pressure forms a low and high pressure difference around the valve closing part through the bypass hole rapidly, and the fluid pressure pushes the closing part to move down and close the valve.
Features: The upper limit of the fluid pressure range is high, can be installed arbitrarily (need to be customized), but must meet the fluid pressure difference conditions.

solenoid valve according to the function classification: water solenoid valve, steam solenoid valve, refrigeration solenoid valve, low temperature solenoid valve, gas solenoid valve, fire solenoid valve, ammonia solenoid valve, gas solenoid valve, liquid solenoid valve, micro solenoid valve, pulse solenoid valve, hydraulic solenoid valve normally open solenoid valve, oil solenoid valve, DC solenoid valve, high pressure solenoid valve, explosion-proof solenoid valve, etc.

ABOUT COMPANY:

Changsha HuaYi Technology Co., LTD.,

Changsha HuaYi Technology Co., LTD., specialized in the sale of construction machinery parts.
Our company mainly business in various brands of pump trucks, excavators, cranes, wet spray machines and other accessories, as remote controls, Rexroth oil pump, transfer boxes, double pump pipes, lubrication pump, Harvey/Eaton/Parker/Kawasaki valves.
our company specializes in the offline and online trading of used construction vehicles in China, so the concrete pump trucks displayed on the website may have been sold offline.Our database provides a large number of fresh used concrete pump trucks, used excavator used mixer trucks and other construction vehicles, please contact our sales directly to provide you with more accurate services.Thank you for your patience to browse!​​