Which one has a faster response time, a pneumatic control valve or an electric control valve?
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I searched the Internet for many manufacturers and relevant information, but there were different opinions regarding reaction time: some said that pneumatic systems are faster than electric ones, while others claimed that electric systems are faster. It’s confusing for me... Could any of you sea friends tell me which reaction time is actually faster?
This post was last edited by ylb913 on 2015-7-14 09:24. “Measurement Instruments and Automation” at the Petroleum University: Pneumatic actuators feature a simple structure, are safe and explosion-proof, have low costs, and are therefore the most widely used； Electric actuators respond more quickly since they receive electrical signals, but they require strict explosion-proof standards.
Pneumatic valves operate faster than electric ones
Electric valves can operate at different speeds, depending on the specific parameters of the valve; therefore, those that are electrically driven act faster than pneumatic valves, while those with slower operation speeds are slower than pneumatic valves. In fact, regardless of how long it takes for the valve stem to move through its full stroke, it is the speed that meets the control requirements that is what we need.
It depends on the valve specifications; for the same specifications, pneumatic valves are faster than electric ones
I am looking for an electric valve with a DN200 size, one whose response time is just a few seconds, and I also want to be able to control the valve’s opening degree using PID
I’ll check this book online, thanks
There is no problem with this; the reaction time of electric valves is also fine. However, it is necessary to control things properly. First, you need to determine your process parameters, such as the medium, operating pressure and temperature, maximum pressure and temperature, maximum flow rate, minimum flow rate, and typical flow rate. The manufacturer will select the most suitable control valve based on the parameters you provide.
This post was last edited by Xiamen Shuangte Valves on 2015-7-14 at 10:59. Only pneumatic valves can meet the requirement of needing to be opened and closed within a few seconds. In as fast as 1 second, it quickly cuts off the air flow using spring suction. Electric motors are heavy, so the cut-off time is slower.