Stainless steel Pneumatic vacuum ball valve introduction:
Stainless steel Pneumatic vacuum ball valve refers to the valve's working pressure is lower than the standard atmospheric pressure, that is, in the state of vacuum negative pressure, so it is usually also known as pneumatic negative pressure ball valve, mainly used in the vacuum system to do the switch control or regulation of flow.Pneumatic vacuum ball valve on the material and cleanliness requirements are very high, because to ensure that there is no volatile matter in the vacuum, and through the sealing treatment, Stainless steel Pneumatic vacuum ball valve can effectively prevent atmospheric impurities into the valve chamber pollution medium.Stainless steel Pneumatic vacuum ball valve can be installed in any position, not only can be used in the pipeline system in the vacuum state, but also can operate normally under a certain pressure. 
 
Stainless steel Pneumatic vacuum ball valve features:
1. Stainless steel Pneumatic vacuum ball valve can work normally in the state of high vacuum and can also be applied in the system of low pressure to achieve the advantage of both positive and negative pressure;
2. Stainless steel Pneumatic vacuum ball valve USES the air source pressure to control the valve, driving torque is small, can quickly open and close in a short time;
3. Stainless steel Pneumatic vacuum ball valve can be installed in any location, and there are a variety of different connection, can meet any complex situation;
4. Stainless steel Pneumatic high vacuum ball valve structure is simple, good sealing, the choice of different materials and action form can be used in different working conditions.
5. Stainless steel Pneumatic vacuum ball valve widely used in vacuum, dairy products, wine, biological engineering, food and chemical industry, can effectively ensure the sealing performance of the valve. 
 
Stainless steel Pneumatic vacuum ball valve technical parameters:
Nominal diameter: DN15 ~ DN100(mm)
Pressure range: 1.3× 10-7pa ~ 6×105pa
Connection: looper flange, welding flange, quick mounting type, thread
Body structure: three-piece body
Drive mode: pneumatic control 0.4-0.7bar
Operating temperature: -30℃ ~ +232℃
Suitable for high purity gas and non - corrosive gas
Action form: single action spring return (normally open, normally closed), double action (air on air off)
Control mode: cut-off type (switch two control), adjustment mode (4-20ma signal proportional adjustment)