pneumatic butterfly valve to open it for many reasons, to exclude them one by one, the first thing to check on-site gas supply is normal, air pressure is stable. Air pressure gauge on the processor show that air is only 0. 3Mpa。 The common pressure pneumatic valve is 0. 5Mpa0. 7Mpa。 Due to the high temperature in the field work, stop production when the temperature become low, thermal expansion and cold contraction, valve torque changes for a long time, the valve torque changes, spot to do maintenance work, often check, if you encounter this kind of situation, as long as the air pressure to increase a little. Network technology is more and more developed now, the pneumatic butterfly valve failure can be directly through the video to know site condition, we have professional and technical personnel through video guide can solve this problem, greatly improving the work efficiency, welcome you to inquire the valve related issues.

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