Pneumatic valve

. The kinds of common pipe pneumatic valve
1) according to the transmission way points: manual, electric, pneumatic, hydraulic and electromagnetic drive.
(2) according to the structure of the points: flashboard pneumatic valve, butterfly valve, leafy regulating pneumatic valve, pneumatic valve, bell tablet pneumatic valve, pneumatic ball valve, etc.
3. According to the working temperature points: high temperature air valve ( T above) , medium temperature pneumatic valve ( ~ ℃) Pneumatic valve, normal temperature ( A ~ ℃ below) 。
(4) according to the shape points: circular pneumatic valve, rectangular pneumatic valve.
　　. Purification technology focus on the main performance parameters of the pneumatic valve nominal size
(1) : refers to the circulation of pneumatic valve diameter, expressed as 'DN'.
(2) the nominal pressure: refers to the design pressure of the pneumatic valve, use 'PNI said. Pneumatic valve of the actual working pressure shall not be greater than the nominal pressure of the pneumatic valve.
3. Temperature resistance; The highest temperature refers to the long-term use of pneumatic valve.
(4) rigor: refers to the leakage of pneumatic valve in the closed position ( The wind) Rate, to reflect the degree of a pneumatic valve tightly. Certain special occasions require 'zero leakage' pneumatic valve, pneumatic valve rigor examination by test.
5. Regulation performance: under different opening of regulation performance curve.
6. Open and close time: refers to the time needed for pneumatic valve is opened or closed. When the pneumatic valve in the purification system and equipment protection, Quick opening, fast clearance) When opening and closing time is an important performance index.
7) resistance coefficient, drag coefficient of pneumatic valve fully open condition.
end electrical parameters: refers to the power of electric actuator and the parameters of the power supply, etc.
　　. Pneumatic valve technology and use requirements of
environmental engineer should be according to the selected pneumatic valve on the role of purification system and use occasions, to put forward the corresponding technical requirements, mainly include: reliability, rigid touch, rigor, wear resistance, corrosion turbidity he temperature tolerance, safety.