The pneumatic system operates with air expansion and compression, requiring several valves at different points. With actuators that induce operation, the valves are automated whenever necessary. A fast exhaust valve is one of them.

Fast exhaust ventilation is utilized to enable the air from the pneumatic system to escape. They help to raise the cycle speed of the pneumatic system so that the work cycle is efficient.

The fast exhaust valves are designed for various requirements as in all other automation components and thus differ in their requirements.

Before you pick fast exhaust valves, we have explained the four specific recommendations.

1. Ambient Temperature

Under various environmental conditions, pneumatic systems operate. The specific rating of its automation component's working conditions is therefore different.

Some fast exhaust valves operate up to 120 Celsius at room temperature, and some start failing after just 80 Celsius.

Thus, the rating of the valve working temperature must be calculated and selected accordingly.

2. Operating Pressure

The automation components function under various conditions, so it is necessary to concentrate on the QEV specification, as explained above.

One of the main criteria you should concentrate on is operational pressure. Some of them have a maximum operating pressure rating of 10 bar, while others can only withstand 7 bar.

Using a QEV with a lower pressurized working environment will create a dangerous situation that can jeopardize employees' lives.

3. With or Without Silencer

QEVs come in 2 different ways, with a silencer, and without a silencer. They both are different styles.

A silencer is a mechanism that can either shut down or reduce noise from the device. This will allow the pneumatic system to run quietly.

A silencer is optional, and it depends on you to select one of the silencers as it does not affect the primary feature of QEV.

4. Size

QEV is a critical automation feature that is designed for smooth operation in pneumatic systems. The QEV within an air system involves concentrating on the scale of the pneumatic system.

As various pneumatic systems have different QEV spaces, a certain QEV size can't fit into another device with different QEV sizes.

Such measurements are a quarter-inch, half an inch, three-quarters of an inch, and an inch.


Industrial structures pose a danger that needs to be reduced to a minimum or completely resolved. This can be accomplished by sufficiently exhausting commercial compressed air. QEVs are used for that purpose.

Like a pneumatic system, the fast exhaust valve provides the cylinder speed for direct air exhaustion of the compressed air within an industrial system.

This means that the system runs smoothly and the risk of injuries is minimized.

As described above, different QEVs are available. If you are confused about where to buy the best quality, don't worry about this; a broad range of QEVs and all other automation components are provided.