The actuator shall be pneumatically operated and must travel a minimum of 90° in each direction and must be able to overtravel at 3% in each direction past 90°. The actuator shall be totally enclosed and contained in a single enclosure, with no external moving parts. All pneumatic passage ways must be integral to the actuator housing so as to eliminate the need for external tubing. Actuator shall be rack and pinion design, and the output torque shall be linear throughout travel. Actuator shall be provided with pistons that have acetal piston guides and rings thus greatly extending the life of the actuator and reducing friction to the minimum. Actuator must be supplied with two dependent travel stop adjustments, the 0° and 90° travel positions have travel adjustments of +5° to -5°. actuator shall be provided with mechanical visual position indicator and the indicator must be able to be removed easily thus exposing the output shaft for use of manually overriding the actuator when needed. The output shaft and pinion must be of one piece and must be manufactured out of hardened alloy steel and zinc plated for corrosion protection. Actuator shall be able to mount in any position without loss of performance. The actuator shall bolt directly to Bray valve mounting flange without need for any brackets.
Actuator housing shall be anodized aluminum and all external fasteners shall be carbon steel, zinc plated. Springs shall be spring steel, coated for corrosion protection. All seals shall be Buna-N and bearings made of lubricated acetal resin.
The actuator shall be factory lubricated. Actuator design must have smooth housing lines so it will self-drain. The actuator shall be factory tested to ensure proper operation.
DelTorq; Pneumatic Actuators DelTech Controls is pleased to offer top-of-the-line products in flow control automation. The DelTorq Series 20 are pneumatically operated, quarter turn rotary, dual rack and pinion design actuators. These actuators are built with several of the latest features that enhance safety and performance. The actuators are manufactured in modern plants equipped with state-of-the-art machinery and under a robust quality assurance system complying to ISO 9001: 2000.
Electric Actuator designed for load requirements up to 300 pounds. This actuator comes standard with two auxilary switches, internal low power heater to reduce condensation, a NEMA 4X rating.
Models available with supply voltage of 24 VAC, 120 VAC, or 230 VAC.
Mechanical connections are ISO5211 compliant.
These actuators can be ordered with an internal proportional control card that accepts a wide range of control signals.
WAM Actuators WAM electro-pneumatic operated rack and pinion type CP actuator suitable for a 90 degree opening and closing of WAM VFS butterfly valves 4′′ to 16′′
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