The 2 position 5 way pneumatic solenoid valves usually have single solenoid and double solenoid, that is, single solenoid valve has one coil while double solenoid valve has two coils. This pneumatic solenoid valve is used to control the flow of the compressed air. They are internally pilot operated and the power supply can be selected by 12V DC, 24V DC, 110V AC or 220V AC. The pneumatic solenoid valves can be switched on/off fast and safe with high reliability and low price.

The pneumatic solenoid valve demonstrates a favorable performance, whose fault rate is lower than that of other solenoid valves. This can also explain the former's wide applications. However, the pneumatic solenoid valve, if used for a long time under the influence of physical factors, such as production materials, various faults might be easily caused. Below are key points for daily maintenance of pneumatic solenoid valve.
1. Disassemble and remove the internal impurities, and check whether various parts suffer serious abrasion. Consider whether to change or repair the damaged parts according to practical situations.
2. When the pneumatic solenoid valve is disassembled, disconnect the power, and turn off other electric equipment, and pay attention to the installation sequence of various parts in the solenoid valve during the process of disassembly.

The two-position five-way solenoid valve is usually used with a double-acting pneumatic actuator. The valve body has five air connection ports, one of which is connected with air source, two with double-acting cylinders of actuators and two of which are exhaust ports.
2-position 5-way double solenoid valve for the double-action air cylinder
When the left coil is connected with power, the Port P and A of solenoid valve are connected. The air supply enters the chamber on one side of the double-action pneumatic piston driving part via Port A to move piston to the other side of the air cylinder. Port B and Port S are connected. The chamber on the other side of the pneumatic piston driving part connected with Port B is at an exhaust state...

As to the 5-way 2-position pneumatic solenoid valve, the two-position means that two positions, on and off, are controllable; the five-way means there are five ports for air flow, namely one inlet (inlet air source), one positive-action outlet and one reverse-action inlet (one positive-action air source and one reserve-action air source for the target equipment, respectively), one positive-action exhaust vent and one reverse-action exhaust vent (installed with the silencer). The 5/2-way solenoid valve is usually used together with the double-acting cylinder.

Solenoid valves are usually used on mechanical control and industrial valves. The position of the valve core is controlled by an electromagnetic coil. The air source is cut off and pass through, realizing the change the direction of fluid flow and then switching on and off of the valve. The following is a brief introduction of 2 position 3 way pneumatic solenoid valve to control the single acting cylinder. From this, we can have a better understand how a 3/2 pneumatic solenoid valve work.

The two-position and three-way (3/2-way) pneumatic solenoid valve is equipped with three air ports on two positions. The two-position here refers to two different working positions (on, off) of the pneumatic solenoid valve core. It means that the valve core controls different gas passages when the solenoid valve gains power and losses power. The three-port means that the valve body of the pneumatic solenoid valve has three ports, namely A, P and T, of which one (P) is for inlet and two (A & T) are for outlet (one of the outlet is normally-open and the other is normally-closed).

The 2/2-way pneumatic solenoid valve has 2 way 2 position. The 2 position means two working positions, namely, the solenoid valve has two state of switching on and off the air path. The 2 way means that there are two port connecting the solenoid valve to the pipeline. And it is internally piloted operated.
This series of pneumatic solenoid valve is used to shut off and release the air, and the input voltage available for 12V DC, 24V DC, 110V AC and 220V AC. The body material is Aluminum Alloy and seal material is NBR. The action frequency of this valve can be up to 5 cycles per second. It is uni-directional, so pay attention to the installation direction. Besides, this pneumatic solenoid valve needn't lubrication.

Three way Two position (3/2-way) pneumatic solenoid valve is used to switch the air on and off. It is internally piloted type based on its working principle. The 3/2 way Normally Open (NO) and Normally Closed (NC) pneumatic solenoid valves are both available, which can be chosen according to the actual application. It can be powered by 12V DC, 24V DC, 110V AC, or 220V AC (Optional). The 3/2 way pneumatic solenoid valves are widely applied in the industrial fields like chemical, petroleum, pharmaceutical, automotive, light industry, food, mineral processing, electroplating, metallurgy, textiles etc.