NEWS
13
2022
-
08
Precautions for on-site use of pneumatic butterfly valves
Author：
Pneumatic butterfly valve is usually a combination of pneumatic actuator, valve body and some accessories after installation and debugging. This article mainly introduces the precautions for on-site use of pneumatic butterfly valves.
In mid-June 2013, a blower factory in Shandong purchased a batch of pneumatic regulating butterfly valves and put them into the sewage treatment in the Xinjiang West-East Gas Pipeline Project. According to the feedback from the on-site personnel that the equipment could not operate normally, the company sent technicians to the site to understand the situation. The following Here are some situations and solutions.
1. The valve does not act when the control cabinet sends a signal. According to the on-site observation of the pneumatic regulating butterfly valve, a solenoid valve is installed on the premise of installing the positioner. The strong electricity of the solenoid valve interferes with the signal output of the control cabinet, and the valve cannot receive the signal, so Can not work normally.
Solution: Remove the solenoid valve and remove the strong electrical interference to the normal operation of the equipment (Note: the function of the solenoid valve is to switch the valve, and the function of the positioner is to control the opening of the valve with a 4 to 20 mA signal, so when installing It is not necessary to install a solenoid valve if there is a positioner).
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