Group 11 Quarter-Turn Rotary Actuators

Precise, reliable, and consistent positioning of control valves is of critical importance in maintaining overall process control. Beck’s unique ability to quickly, accurately, and consistently track the control signal allows you to fully utilize your control system’s capabilities. This can significantly decrease process variability, improve product quality, and reduce operating costs.

Group 11 valve drives are engineered for direct coupling on quarter-turn ball, plug, and butterfly valves. They may also be installed using specially engineered crank arm and linkage arrangements.

Valves and drives may be ordered together as pre-engineered assemblies ready for drop-in installation. Or drives can be supplied separately along with the necessary hardware for field installation on existing valves.

General Specification

Input Power
120 V ac, single-phase
240 V ac, single-phase

Operating Conditions
-40° to 85° C. (-40° to 185° F.), 0% to 99% relative humidity

Demand Input and Position Feedback signals are isolated from the ground and the ac power line.

Action on Loss of Power
Stays in place.

Action on Loss of Input Signal (Power On)
Stays in place or, on some drives, is field configurable to move to any preset position.

Limit Switches
Two SPDT switches (one for each direction of travel) provide over-travel protection.

Auxiliary Switches
Up to four 6 A, 120 V ac switches available. Switches are labeled S1 to S4 and are cam-operated and field-adjustable.

Permits local electrical operation, independent of controller signal. Standard on all units. An optional auxiliary contact can be used to indicate that the Handswitch is in "AUTO" mode or to sound an alarm if it is taken out of "AUTO".