Stainless steel solenoid valve is used to control the direction of the fluid automation of the basic components, belongs to the actuator; It is commonly used in mechanical control and industrial valves to control the direction of the medium and thus the opening and closing of the valve. The solenoid valve has a sealed chamber with through holes in different positions, each leading to a different tubing. The chamber has a valve in the middle and two electromagnets on either side. To which side the valve body will be attracted when the solenoid coil is energized. By controlling the movement of the valve body, different drain holes can be blocked or leaked. The oil inlet hole is normally open, so the hydraulic oil will enter the different drain pipe. Then the oil pressure will push the piston of the cylinder, and then drive the piston rod, which drives the mechanical device to move.

In this way, the mechanical movement is controlled by controlling the current in the electromagnet. Only the solenoid valve is completed on the iron core sealed in the magnetic isolation sleeve of the electronic control valve by using electromagnetic force. There is no dynamic seal, which is easy to plug the leakage.

Straight-through solenoid valve consists of solenoid coil and magnetic core, is a valve body with one or several holes. When the coil is turned on or off, the core's work causes the fluid to pass through the valve body or to be cut off, thus changing the direction of the fluid. The electromagnetic components of the solenoid valve are composed of fixed iron core, moving iron core, coil and other components. The valve body consists of a slide spool, a slide sleeve and a spring seat. The solenoid coil is mounted directly on the valve body, which is enclosed in a sealed tube to form a simple compact assembly. Commonly used solenoid valves have two three-way, two four-way, two five-way, etc. Here is the meaning of two digits: for solenoid valve, power and power, for controlled valve, open and close.

Direct drive solenoid valve is composed of valve body, valve cover, electromagnetic components, springs and sealing structure. The sealing block at the bottom of the moving core closes the valve body inlet by spring pressure. After electrization, the electromagnet is attracted, the air outlet is closed by the upper part of the passive iron core with a spring seal block, and the airflow of the automobile pressure relief valve enters the film head from the air inlet, playing a control role. When the power is off, the electromagnetic force disappears, and the moving iron core leaves the fixed iron core under the action of the spring force, moves downward, opens the air outlet, and blocks the air inlet. The airflow at the membrane head is discharged through the air outlet and the membrane returns to its original position. In oxygen production equipment, it is used for emergency cutting off of membrane regulating valve of turbine expander entrance.