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Documentation
Linear Pneumatic Actuators
Our L & HDL series are piston operated valve actuators that use air pressure or natural gas to provide the force required to open, close and control rising stem valves.
Performance Highlights
- Our L series actuator is perfect for control valves. With smooth operation from speeds as slow as .012 inches per second to speeds as fast as 12 inches in less than a second.
- Our HDL series actuator is ideal for on/off applications.
- For anti-surge applications and other high speed applications, a "cushion" design is incorporated inside the piston cylinder assembly.
- The adaptable nature of our design allows you to automate valves in place without shutting the plant down.
- Our pneumatic actuators can accommodate a broad spectrum of valve applications from very high to very low thrust requirements.
Spring Return
To provide proper failure position, ATI spring cartridges allow for fail open or fail closed valve applications.
This is extremely important in emergency shut down applications.
A spring is the only true mechanical failure method. However, an air fail system can provide a cost effective failure mode solution when using a double acting actuator and an air tank.
Standard Specifications
- 4" thru 44"Bore Size
- 1" thru 22"Stroke
- 150 psiMaximum Working Pressure
- 225 psiStatic Pressure Test
- 500 lbs to 50,000 lbsThrust
- Standard -40°F to 200° F
Low Temp -65°F to 200° F
High Temp -20°F to 400° FTemperature Range
* Larger bore sizes, longer strokes and higher pressure are available.
Double Acting Actuator
The design of our double acting actuators minimizes height and maximizes thrust.
force = supply pressure * area
area = .7854 * (piston diameter)^2
In order to double the force for a given pressure, you need only to increase the diameter by a factor of 1.41.
This is superior to a tandem design or a stacked cylinder design where the same increase in force would require increasing the effective piston diameter by a factor of 2. This requires more material which increases the price
Standard Specifications
- 4" thru 44"Bore Size
- 1" thru 22"Stroke
- 150 psiMaximum Working Pressure
- 225 psiStatic Pressure Test
- 500 lbs to 50,000 lbsThrust
- Standard -40°F to 200° F
Low Temp -65°F to 200° F
High Temp -20°F to 400° FTemperature Range
* Larger bore sizes, longer strokes and higher pressure are available.