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Electric gate valve is a type of valve that performs linear motion. It is matched with Z-type multi turn actuator and comes in both switch and intelligent types. This valve is a common on-off valve with simple operation, which uses the up and down movement of the gate to connect and close the fluid medium in the pipeline. Widely used in sectors such as power, metallurgy, petroleum, chemical, papermaking, and wastewater treatment.
Pneumatic gate valve is equipped with a double-layer pneumatic actuator cylinder, buffer mechanism, manual and protective mechanism. Due to the use of a double-layer cylinder structure, the lifting force of this valve is doubled compared to a single cylinder pneumatic gate valve. This fundamentally solves the problem of some valve bodies of single cylinder pneumatic gate valves being wedged and unable to open.
Understanding the differences between electric valves and pneumatic valves in one article
The difference between electric valves and pneumatic valves:
1. Pneumatic valves have a larger operating force distance than electric valves, and the opening and closing speed of pneumatic valves can be adjusted. They have a simple structure and are easy to maintain. During the operation, due to the buffering characteristics of the gas itself, they are not easily damaged by jamming, but they must have a gas source and their control system is also more complex than electric valves. Pneumatic valves have sensitive response, safety and reliability. Many factories with high control requirements set up compressed air stations specifically for pneumatic instrument control components. The power source of the pneumatic valve actuator is the air source, which comes from the air compressor. A locator is used to convert the electrical control signal into a pneumatic control signal, driving the pneumatic actuator to adjust the valve position.
2. The power source of the electric valve actuator is the power supply. If the circuit board or motor malfunctions, sparks are prone to occur. Therefore, it is generally used in environments with low environmental requirements and no danger. Compared with the adjustment performance of pneumatic actuators and electric actuators, pneumatic actuators have faster response speed and are more suitable for application in adjustment conditions. Therefore, manufacturers of control valves also produce pneumatic actuators to match them.
3. The adjustment response speed of electric actuators is not fast enough, and pneumatic actuators on regulating valves are more commonly used than electric actuators.
4. The essential difference between electric valves and pneumatic valves lies in the use of different driving devices, namely actuators, while regulating valves themselves have no significant difference. Cooperating with different actuators is mainly required for working conditions, such as chemical and other explosion-proof applications. Pneumatic valves are commonly used because of their high safety requirements and low price. When combined with intelligent locators, they can be connected to the bus and have simple control methods.
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