Pneumatic control valve selection < / div >

control pneumatic valve factory inspection, mainly for static characteristic test, including basic error, rated travel deviation, return difference, starting point and end point deviation, dead zone, repeatability error, sealing, leakage, etc. , all these were made in the case of no-load test, actually they are on the work bench to measure the results gained by the pneumatic control valve, but the result is difficult to explain the pneumatic control valve in the actual operation conditions will show what kind of performance. Traditional theory holds that carefully adjusting static factors will make the pneumatic control valve ( Thus the whole loop) For good performance. Now, however, we recognize that this is not always the case.
researchers and producers to tens of thousands of times of performance examination, up to 50% of the pneumatic control valve ( Many of them by considering the traditional factors and selection) For optimization control loop performance failed to have much effect. Subsequent research has shown that control the dynamic behavior of pneumatic valve to reduce process variability plays a very important role. In many of the key process, the extent of different control pneumatic valve to reduce process variability even a difference of 1% can greatly improve production efficiency and reduce waste, and great economic benefit can be obtained.
second, conventional wisdom always think, the improvement of process optimization is always from the control room control instrument. However, the test data show that under the condition of using the same control instrument, control the dynamic behavior of pneumatic valve can significant impact on the circuit performance. If the control precision of the pneumatic valve can only be reached 5%, so spend a lot of money to configure a its control precision can reach 0. 5% of the advanced control instrument system does not have much effect. In the search for a match the use situation of pneumatic valves, should first consider four basic types of pneumatic valve throttle control, namely cage pneumatic ball valve, pneumatic valve, eccentric rotary float pneumatic valve and butterfly valve.
as the world's important suppliers of pneumatic valve control, absorb the innovation in the field of pneumatic control valve, committed to the development and production of high quality pneumatic control valve, and provide customers with a full range of industrial pipeline control scheme, the products are widely used in petroleum, chemical industry, electric power, metallurgy, food, medicine, urban construction, form a complete set of machinery and other industries. Provide customers with a full range of pneumatic control valve selection criteria!