gas source correlation

Type and quality of gas source: Clean, dry, and non-corrosive compressed air is usually used. If the on-site gas source is a special gas or contains impurities, moisture, etc., it is necessary to choose an actuator that is corrosion-resistant, capable of filtering or drying, or equipped with corresponding gas source treatment equipment.

Gas source stability: Stable gas source pressure is essential for the stable operation of the actuator. If the gas source pressure fluctuates greatly, consider the pressure adaptation range of the actuator, or configure a voltage regulator.

Actuator itself

Structure: AT pneumatic valve actuators are mostly piston type, with compact structure and large output torque; GT pneumatic devices have fork type or rack and pinion type, etc. The fork type has large torque in the opening and closing positions, and the rack and pinion type has fast operation speed and high precision. Can be selected according to valve operation requirements and working conditions.

Protection level: According to the severity of the use environment, such as outdoor, humid, dusty, etc., choose an actuator with the corresponding protection level. Common protection levels include IP65, IP67, etc. The higher the number, the better the protection performance.

Supporting and after-sales

Accessories: It is necessary to consider the compatibility and matching of the actuator with solenoid valves, positioners, filters, pressure reducing valves, etc., such as interface size, signal transmission, etc.

Brand and after-sales: Well-known brand actuators are more guaranteed in terms of quality, performance and reliability, and the after-sales services network is complete, providing timely technical support, maintenance and parts supply services.

Regulations and standards

Industry standards: Different industries have specific requirements for valve actuators, such as fire and explosion-proof standards in the petrochemical industry, hygiene standards in the food and beverage industry, etc., and the selection must comply with the corresponding industry standards.

International and national standards: to ensure that the actuator meets the relevant international standards (such as ISO standards) and national standards, such as the actuator connection size, performance indicators, etc. to meet the standard requirements to ensure its versatility and interchangeability.

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