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Address: No.25 Yingbin Road,Bixi New District,Changshu City,Jiangsu Province
Contact name:Wang
Changshu Kexin Automation Equipment Co., Ltd. |
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Ball valve with pneumatic rotary actuators double acting and spring return
Pneumatic Actuator
Pneumatic pressure enters this housing applying pressure to the diaphragm. As the air pressure increases to the diaphragm the force exerted against the spring increases causing the actuator stem to move.
Reducing the pneumatic pressure will cause the spring to retract the diaphragm.
The actuator stem will move a valve in or out of a valve body.
In an air-to-open operating condition, the spring forces the valve closed.
The air pressure on the diaphragm creates a force that overcomes the force of the spring and opens the valve.
By rearranging the spring pneumatic supply, this type of actuator can fail-open or fail-closed when air pressure is lost.
1.Output torque:
Double acting : Up to 13024Nm
Spring return : Up to 9523Nm
2.Working pressure:
Double acting : 2.5bar~8bar
Spring return : 2.5bar~8bar
3.Working temperature:
-20℃ ~ +80℃ : In standard construction
-35℃ ~ +80℃ : With Nitrile butadiene rubber (NBR) O-rings ( low temperature execution)
-15℃ ~ +150℃ : With fluororubber (FKM) O-rings ( high temperature execution)
Pneumatic actuator control valvesstatement of usage and selection
The extruding high intensity aluminum body possesses a honed internal surface coated with hard anode oxygenation for long life. Low coefficient of friction and swift performance.
Excellent compact and modernized construction along with multi specifications makes the selection both economic and beneficial.
All acting surface adopt high quality bearing resulting in low friction, high cycle life, and no noise
The two independent external stroke adjustment bolts can easily and precisely adjust ±5°at both open and close directions.
Same outline actuators have the functional modes of double acting and single acting (Spring -Return). The Spring-Return has the normally-open and normally-close styles.
Multi function indicator with NAMUR is convenient for mounting accessories.
Pre-compressed load spring is convenient for safe mounting and tear down procedures.
Die-casting aluminum pistons and end caps have high intensity and light weight.
Different O-rings materials are available for high and low temperature.
Product Application
AT series Pneumatic Actuator is made of dual pistons driven by racks and pinions. There are two models. One is Dual Acting model, and the other is Spring Return model, which can suit various flammable, corrosive, dusty, strong magnetic field, radiation, vibration corrosive environment indoor or outdoor.
Auto-control in the field of electric power, petrochemical,
metallurgy, petroleum, gas, town, construction, drainage, chemical
industry, oil refining, mining, power plant, metallurgy,
architecture, medicine, food, gas, scientific research, etc.
