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Century Instrument Actuators

 
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Image Efficiency - with seven interchangeable sizes - longer strokes and higher air pressure capability - Century actuators provide for maximum use of available power.

Note that the No. 0 actuator in the double-acting (air to close-air to open) version will fully stroke a 2-1/2" valve - while the air to spring version will fully stroke a 3" valve. This compares with our nearest competitor's smallest actuator which can fully stroke only a 1-1/4" valve.

Rugged: The high grade - 30,000 lbs. per square inch tensile strength cast iron diaphragm cases - together with the uniquely produced actuator diaphragm and steel diaphragm plates, allow the use of higher operating air pressures, with consequent reduction in the size and cost of the actuator required.

The actuator diaphragm, which is produced and molded under an exclusive process, is batch tested at 125 psig. operating air pressure for 175,000 strokes before the batch is released to the valve assembly department.



   
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Actuator Size

Outside Diam.

Stroke (Air to Air)

Stroke (Spring Closed)

Stroke (Spring Opened)

Max. Air Pressure

Air Consumption
0 6 in 1 3/8 in 1 5/8 in 1 5/8 in 200 psig 20 in³
1 7 3/4 in 1 3/4 in 2 1/16 in 2 1/16 in 150 psig 32.6 in³
2 9 1/2 in 2 3/16 in 3 in 3 in 200 psig 52.5 in³
2A 12 1/4 in 3 1/4 in 3 5/8 in 3 5/8 in 130 psig 157 in³
3 14 7/8 in 3 3/8 in 3 7/8 in 3 7/8 in 110 psig 280 in³
4 18 1/8 in 5 3/16 in 5 3/4 in 5 3/4 in 100 psig 390 in³
5 22 in 6 3/8 in 6 7/8 in 6 7/8 in 95 psig 1800 in³
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