Pneumatic rack and pinion actuator and double acting pneumatic actuator and spring return actuators

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Pneumatic rack and pinion actuator and double acting pneumatic actuator and spring return actuators available for ball valves and butterfly valve automation. Top quality bearings and actuator seals for low friction high cycle life. Pneumatic actuators come in various sizes for almost any sized valve on the market. Sizes range from DA-32 to DA-400 and SR-45 to SR-400. Brand new heavy duty, compact body design.

Our pneumatic actuator series AT is a high quality, durable housing that contains a powerful actuator capable of turning the biggest valves in the market. This series of actuators (in spring return operation and double acting) are capable of being fail to open and fail to close. Using compressed filtered air, not necessarily lubricated is recommended. With a brand new, compact design – this Spring Return/Direct Acting pneumatic actuator is ideal for butterfly valve and ball valve automation.

► Spring Return Actuation Configuration

CCW – (Counter Clock Wise)

Air is supplied to Port A forcing the pistons away from each other (towards ends), rotating the drive pinion counter-clockwise and exhausting air out of Port B.

CW – (Clock Wise)

Air is supplied to Port B forcing the pistons toward each other (towards center), rotating the drive pinion clockwise and exhausting air out of Port A.

► Double Acting Actuation Configuration

Fail CCW – (Counter Clock Wise) Air is supplied to Port A forcing the pistons away from each other (towards ends), rotating the drive pinion counter-clockwise, compressing the springs and exhausting air out of Port B.

Fail CW – (Clock Wise) Air failure (loss of pressure) allows the compressed springs to force the pistons toward each other (towards center), rotating the drive pinion clockwise and exhausting air out of Port A.

Pneumatic rack and pinion actuator

• Available for valves sizes 1/4″ up to 36″

1	Available in spring return or double acting configurations
2	Brand new heavy duty design/housing
3	Compact design
4	Pneumatic sizes available from DA32 – DA400; SR45 – SR400
5	Temperature ratings: 0C – 80C; from -20C – +80C
6	Air only temperature: -40C to +150C (in proper execution)
7	Minimum 40PSI for air supply, maximum air supply is set at 130PSI
8	Compressed filtered air should be the operating media – not necessarily lubricated (if lubricated air is used, either non-detergent oil or NBR compatible oil must be used)
9	Standard rounded end caps help to accumulate contamination
10	Heavy duty bearings and seals form low friction and high cycle life
11	Durable, trouble free operation – detailed installation manuals included
12	Modular preloaded springs with metal spring guides for use in extreme temperatures (high and low)

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► Adjustment

The set screw in the end of the cylinder is used to limit the cylinder stroke.

1. Pressurize the cylinder port nearest the actuator housing, closing the valve.

2. Relieve cylinder pressure. See Valve Instructions to determine closed position.

3. Loosen the lock nut and turn the set screw in the end of the cylinder in or out until the valve is in the correct closed position.

4. Reapply cylinder pressure to the port nearest the actuator housing, closing the valve, to ensure that stop is correctly set.

5. Lock the set screw in place with the nut. Be sure the thread seal is in place.

► WorkShop

Questions about which valve type or series is best for your application? Contact us today!