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Series 700 actuators are pneumatic diaphragm operators that offer spring return in either direct or reverse acting styles, offering fail-open and fail-closed modes respectively.
The actuators may be fitted with a variety of springs in order to overcome the wide range of forces that may exist on a valve plug. An adjusting mechanism is incorporated into the actuator design to allow for adjustment of the spring pre-compression.
The series 700 actuator is available in 60, 100 and 160 square inches of effective diaphragm area and may accommodate up to five inches of travel.
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Rotary Diaphragm Actuators
Product Description
Design Features: DeZURIK diaphragm actuators are designed specifically for use on quarter-turn valves. They feature all steel, cast iron and stainless steel construction for corrosion resistance in caustic environments. The actuators are designed for on-off or modulating service in either a fail-open or fail-closed mode. Action can be easily changed in the field with no additional parts required. The spring cartridge is caged at the factory for increased safety. The output shaft is supported at the top and bottom with bronze bearings that absorb side thrust and insure smooth, efficient, and accurate throttling control.
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Diaphragm Cylinders
This 1-1/4" bore diaphragm cylinder is designed for a clamping application with minimal friction losses. Its short overall height allows the cylinder to fit into a tight space with minimal friction.
Stroke length: .12".
Output force will be approximately 15% less than theoretical when units are not extended full stroke.
Cylinders should not be operated without a part being clamped (extension should be limited by customer to maximize life).
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STANDARD ROLLING DIAPHRAGM AIR CYLINDERS
These cylinders provide virtually frictionless conversion of pneumatic pressure to linear force.
SMALL BORE DIAPHRAGM AIR CYLINDERS
Same friction free performance as our larger sized air cylinders.
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