Fisher Pneumatic Actuators Fisher 2052 spring-and-diaphragm rotary actuators

Fisher® 2052 spring-and-diaphragm rotary actuators are used on rotary-shaft valve bodies for throttling or on-off applications. The 2052 may be used for throttling service with a positioner, or it may be used for on-off service without a positioner. The 2052 has an ISO 5211 mating interface that allows installation to non-Fisher valves.

• Compact design, smaller actuators— Ensures reduced valve/actuator envelope dimensions leading to greater mounting versatility for both skids and smaller process plants, where space is at a premium.
• Compatible with DVC2000 and DVC6000 controllers and 3620 positioner— The new actuator allows linkage-less feedback, via a contact-less magnetic array, from the lever to the end-mounted DVC2000. The DVC6000 and 3620 are side-mounted, with feedback through the cam and feedback arm.
• Clamped lever to reduce lost motion— The clamping of the lever onto a splined valve shaft, coupled with the single pivot linkage, reduces lost motion between the actuator and the valve. The typical cumulative deadband for a Fisher rotary control valve assembly results in 0.5% or less variability.
• No bench set required— The new nested spring design requires no bench set. This also simplifies the actuator selection process.
• ISO 5211 mounting with optional insert— The actuator can now be mounted directly onto non-spline shafts, such as Square and Double D. This allows the actuator, with its enhanced control, to mount on a wider range of valves conforming to ISO 5211.
• Adjustable travel stops standard with optional lockout feature— Provides the ability to adjust or change the travel range without removing the actuator or the addition of extra parts. The optional lockout feature locks the lever in the spring-fail position.
• Fail-safe mechanism contains no aluminum— All parts (steel, cast iron, and ductile iron) in the fail-safe mechanism ensure the actuator will maintain safety integrity in the event of a fire.
• Powder paint as standard— The Emerson Process ManagementTMpowder paint finish offers an excellent corrosion-resistant finish to all external steel and cast iron parts.
• NAMUR VDE/VDI 3845 for accessory mounting— Meeting the global standard ensures compatibility for most accessories, enabling quick and easy mounting.
• Field reversible, right- or left-hand mounting— The actuator/valve assembly action can be converted from push-down-to-open to push-down-to-close, or vice-versa, without additional parts.
• Declutchable and top-mounted handwheels— Available (except top-mounted not available for size 3 actuator).

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