Pneumatic piston actuator

Pneumatic piston actuator piston thrust, fast response, as the drive components. Pneumatic piston actuator features are as follows.
Use a larger air supply pressure. For example, the operating pressure up to 1 MPa, the domestic piston actuator can 0.5MPa In addition, it does not require the air source pressure regulator pressure reducer.
2 thrust. Since it is not necessary to overcome the reaction force of the spring, thus increasing the operating pressure and increases the effective area of ​​the piston can be obtained for larger thrust. Spring return piston actuator, thrust calculation similar to the diaphragm actuator thrust is less than the same specifications without spring piston actuator.
3 suitable for high pressure, high static thrust applications and requirements.
When the throttle control, the amount of output displacement is proportional to the input signal, but you need to add a valve positioner.
5 When you open and close control as a two-position, the executive body of the spring-piston, one side of the piston to send the input signal, the other side of the vent, or on the other side to send the input signal, the side vent, on or off The function; spring return piston implementing agencies to send the input signal can only be on one side, and its return is realized by the spring. For the realization of the two control, usually two actuator solenoid valve switch. Through constant pressure on one side, the other side of the pass of the changes in pressure (greater than or less than a constant voltage) to achieve the two control, it makes a slower response; pressure on both sides of the pass changes (increases on one side, the other side reduced) two control will also slow response times, and does not intend to adopt.pneumatic accessory
6 with the film and the implementing agencies similar to the piston actuator of action and reaction are two types. When the input signal increases,
The piston rod relocation type is called positive role actuator; when the input signal increases, the piston rod retracted the type referred to as adverse
Actuator. As throttle control, usually valve positioner can be used to achieve the conversion of the positive and negative effects, reducing the device type
And the number of spare parts.electric solenoid valve