Pneumatic valve actuator is an executive device that uses air pressure to open and close ball valve, butterfly or regulating valve. The pneumatic actuator powered by compresses air is easy to repair and maintain, and has good adaptability to the environment.

Specifiation

• Model: RDDLZ-AT300D
• Bore Size: 300mm (11.8 inch)
• Air Supply Port: 1/2 inch
• Power Source: Compressed Air
• Actuator Type: Double Acting
• Air Pressure: 2.5bar ~ 8bar
• Max Working Pressure: 10bar
• Operating Temperature (Optional): -20℃ ~ 80℃, -35℃ ~ 80℃, -20℃ ~ 150℃
• Rotation Angle: 90°±5%
• Body Material: Aluminum Alloy
• Life Time: One Million Time

Dimensions

RDDLZ-AT300D

Details

Tips: What are the causes of vibration of pneumatic valve actuators?

Vibration of the pneumatic actuator control valve can cause the control system to not work properly. There are three main reasons for vibration:

1. External vibration source, that is, the equipment pipeline itself vibrates.
2. The selection of the pneumatic actuator control valve does not meet the selection requirements, such as inappropriate flow characteristics, too large valve diameter, poor spring stiffness, etc., which cause the control valve to vibrate.
3. It will be corroded by the fluid and vibrate.

Troubleshooting measures for pneumatic valve actuators: If inherent vibration is found in the equipment lines, the equipment lines can be cleaned and reconditioned to eliminate the vibration. In the event of a problem with a pneumatic actuator control valve, a restrictor orifice can be used to absorb some of the pressure drop, reduce throttling speed and overcome valve vibration. Moreover, the orifice plate can also change the natural frequency of the system to avoid the vibration caused by the natural frequency of the control valve approaching the natural frequency of the system.