ALFACOM ENGINEERING LTD.
ALFAMATIC ARF Four-Piston Pneumatic Actuators
ALFAMATIC ARF four-piston pneumatic actuators provide quarter-turn valve operation in a compact arrangement. Evaluate the selected model using its torque data, mounting dimensions and the operating requirements of the valve.
ALFAMATIC ARF Four-Piston Pneumatic Actuators · ALFACOM catalogue
Four-Piston Actuator Range
The catalogue covers ARF-15, ARF-20, ARF-25, ARF-30, ARF-35, ARF-45, ARF-60 and ARF-75. Double-acting and spring-return configurations are selected by model, spring set and temperature version.
Compare actuator options using the available torque at the actual air pressure, operating configuration, overall dimensions and mounting interfaces. Piston count alone does not establish equivalence between models.
Selection and Failure Position
Check the valve torque throughout its travel, available air pressure, direction of operation, required safety factor and valve connection dimensions. For spring-return operation, also check the available spring-stroke torque.
Specify the required valve position on loss of air. The failure position depends on the operating configuration and assembly orientation; it is not determined by the series name alone.
Installation Space and Accessories
Use the dimensional drawings to check clearance for the actuator, bracket, air connections, feedback box and maintenance access.
ASV solenoid valves and ALS position feedback boxes may be incorporated where the selected interfaces are compatible. ALFACOM can assist with component selection and an assembled valve-and-actuator package.
Technical Catalogue
Review the ARF catalogue for model-specific configurations, technical data and dimensional drawings.
Questions About Selection
How should I compare ARF with a twin-piston actuator?
Compare torque at the actual supply pressure, operating configuration, mounting dimensions and available installation space. Check the complete assembly rather than the number of pistons.
What information is needed for a quotation?
Provide the valve model or datasheet, operating torque, process conditions, available air pressure, required failure position, control and feedback requirements, and quantity.
Related ALFAMATIC Equipment
Discuss Your Application
Send your requirements or a photo of the existing equipment for technical assistance and a quotation.
Availability and lead time are confirmed for the requested model and quantity.