Rastagroup control valve manufacturer | Series W
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Series W

The Series “W” spring opposed pneumatically operated diaphragm Actuator is designed to satisfy the majority of general control valve applications. It is particularly suited for the areas where high fire risk is present. The Series “W” actuator has proven dependability even when operating in the most adverse climatic conditions and temperatures.

Three Basic actuator sizes are available and these are combined with different spring ranges and travels up to 3 ins (89mm) for the largest size actuator. The spring air fail action of the actuator provides a very positive and reliable feature which is specified for many critical applications.

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•   High power.

•   Fast response.

•   Operates from low pressure air supply.

•   Low stressed, positive spring fail action in either air fail close operations.

•   Field reversible operation.

•   Simple pressed steel actuator construction with a minimum number of parts for low cost trouble free ownership.

•   Fabricated assembly bolted to a cast yoke combines lightness with mechanical strength.

•   Fire resistant construction, with positive fail position.

•   Adjustable pre-compression spring forces.

•   High degree of reliability with low hysteresis.

•   Simple low cost construction and maintenance.

•   Epoxy paint system used as standard.


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