Can digital signals only be used with electric valves? Is a pneumatic valve just an analog signal? ? In what situations cannot electric valves be used instead of pneumatic ones?
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Can digital signals only be used with electric valves? Is a pneumatic valve just an analog signal? ? In what situations cannot pneumatic valves be used in place of electric valves? ?
Both electric valves and pneumatic valves are divided into control valves and shut-off valves; generally, electric shut-off valves and pneumatic shut-off valves are controlled using digital signals. Electric valves are generally used in industries where they are commonly employed, such as power plants and areas with limited gas supply; they can also be used in situations that require a high output torque. Of course, on special occasions, pneumatic control valves can also function as shut-off valves or be used as such. Electric valves are controlled digitally; as long as they have a mid-stop function, they can also provide some degree of adjustment capability, though the accuracy is not high.
Are there any situations where electric valves cannot be replaced by pneumatic valves? Without considering factors such as the presence of a gas source, etc
When the output torque of the electric valve is greater than the maximum output torque of the pneumatic valve, it cannot be used as a substitute. In other words, the output torque of the pneumatic actuator is limited; once it reaches a certain value, no such product can be found. I don’t understand the exact meaning of your question.