Working principle

Double-acting: A double-acting pneumatic actuator has two air intakes. When compressed air is introduced into one of the intakes, the piston or diaphragm is displaced under the action of gas pressure, which drives the valve to open or close. To achieve the reverse action of the valve, compressed air is introduced into the other inlet.

Single-acting: The single-acting pneumatic

actuator has only one air inlet, which realizes the opening or closing action of the valve when the compressed air is introduced, and relies on the spring force and other return mechanisms to return the valve to its original position.

Structural features

AT pneumatic valve actuator: Compact structure, usually piston structure, with good sealing and reliability, large output torque, can adapt to different diameters and pressure valves. Easy to install, can be directly connected to a variety of types of valves, strong adaptability.

GT pneumatic device: The design is sturdy and durable, generally using fork type or rack and pinion structure, which can provide stable output torque. With high precision and repeatability, it can ensure the accurate switching action of the valve. High protection level, adapt to harsh working environment.

Application field

AT Pneumatic Valve Actuator: Widely used in chemical, oil, natural gas and other industries, it can be used to control the flow and direction of various fluid media. In water treatment systems, it is often used to control the entry and exit and distribution of water. In the food and beverage industry, it can be used for valve control of material delivery pipelines to meet hygiene requirements.

GT pneumatic device: It is often used in large valve control in electric power, metallurgy and other fields, such as steam valves in power stations, gas

valves in metallurgical furnaces, etc. In papermaking, pharmaceutical and other industries, it can also reliably control valves in process pipelines to ensure the stability of the production process.

Selection points

Torque calculation: According to the size, pressure level, and medium characteristics of the valve, the required actuator torque is accurately calculated to ensure that the actuator can drive the valve reliably.

Gas source conditions: consider factors such as pressure, flow rate, and quality of the gas source, and choose a matching pneumatic actuator to ensure its normal operation.

Environmental requirements: According to the temperature, humidity, corrosiveness and other conditions of the use environment, choose an actuator with the corresponding protection level and material.

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