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General parameters of pneumatic valves


Pneumatic valves

With the development of modern manufacturing industry, more and more enterprises realize intelligent integration, such as pneumatic valves, electric series valve actuators or valve devices to achieve remote control, those pneumatic components can reduce the burden of human resources by the majority of users are favored. 

Here mainly pneumatic valve device to use the requirements and conditions for a brief description coming from 2020 best pneumatic component manufacturer, AIRWOLF CO, LTD.

We need to know why the near pneumatic valve is so popular, because in comparision between pneumatic and electric system, price of the latter will generally be higher than pneumatic components, but pneumatic device is limited by air source conditions, so in the case of air source conditions,  pneumatic tool is very worthy of recommendation.


  • For pneumatic valves to understand clearly, it is a valve driven by compressed air. Pneumatic valve procurement only clear specifications, categories, pressure to meet the procurement requirements of the practice, it can be used to control air, water, steam, corrosive media, mud, oil, liquid metal and radioactive media and other types of fluid flow. In the current market, economy environment is not perfect, because of the competition among pneumatic valve manufacturers, each in the unified design of pneumatic valves under the concept of different innovation, the formation of their own enterprise standards and product personality.Therefore, in the pneumatic valve procurement more detailed technical requirements appear, and pneumatic component manufacturers achieve consensus, as pneumatic valve procurement contract accessories are very necessary. This class of valves should generally be installed horizontally in the pipeline.


General requirements for pneumatic valves

1.  in production of pneumatic valve specifications and categories , pneumatic valve manufacturer should meet the requirements of the pipeline design documents.

2. pneumatic valve model should indicate the national standard number requirements.

If it's enterprise standard, pneumatic valve supplier should indicate the model related specification.

3. under pneumatic valve working pressure, the requirement of ≥ pipeline working pressure, on the premise of not affecting the price, pneumatic valve can bear pressure which should be greater than the actual pipeline working pressure;

Under closed condition of pneumatic valve, either side should be able to bear 1.1 times of working pressure of pneumatic valve without leakage; When pneumatic valve is open, the body shall be able to withstand twice the valve pressure.

4. pneumatic valve manufacturing standards should be explained according to the national standard number, if  it is up to par of pneumatic valve enterprise standards, purchase contract should be attached to pneumatic valve enterprise documents.


  • Installation and use of pneumatic valves

  • (1) Before installation and use of pneumatic valves, pneumatic valves must be inspected before installation and switch operation test.

  • Only under the condition of normal operation, can pneumatic valves be installed and used.

  • (2) Pneumatic valve installation to make the valve and pipeline flange as far as possible, and add support fixed.

  • Do not make pneumatic valves subjected to other external forces, so as not to damage pneumatic valves in the seal and valve deformation.

  • Pneumatic valves cannot be used due to defective valve switch and valve damage.

  • (3) To ensure that the ball valve and pneumatic components provided by power source must be clean, as far as possible without oil and water. Cleanliness should be less than 0.4 microns.

  • (4) Before air source is connected, air supply pipeline, air source interface and switches and other devices must be cleaned to prevent the failure caused by dirt and silt on the unclean pipeline rushing into pneumatic actuator.

  • (5) For the connection of pneumatic actuators, solenoid valves, positioners, filters, pressure reducing valves, etc., copper pipe or nylon pipe can be used. In order to prevent dust and reduce noise, exhaust port should be installed with muffler or muffler throttle valve.

  • (6) After installation, pneumatic valve should be tested, pressurize pneumatic actuator to the rated value, the pressure is 0.4 ~ 0.7mpa, the pneumatic ball valve on and off test, observe the valve opening and closing situation.

  • Pneumatic valve should be flexible rotation without blocking phenomenon. In the switch if there is a blockage phenomenon can increase air pressure, repeated switch to make the valve to switch flexible.

  • (7) When installing and debugging switch type pneumatic valve, first use manual device (manual button on the solenoid valve) debugging, debugging on the power after normal operation.

  • (8) Pneumatic valve should be regularly maintained at the rotation of the valve stem, and should be refuelled (oil) once every three months. Periodically discharge and discharge water to pneumatic actuating unit and air filter used together. Under normal circumstances, check once every six months, check once a year.

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