Actuators

PowerRac® Actuators

The rack and pinion design of PowerRac® Actuators provides high-operating torque for accurate control in modulating services, and high opening torque for on/off services. The unique square collet coupling rigidly clamps the drive pinion to the valve shaft, eliminating backlash in the drive connection. This rigid connection allows thrust from the cylinder to precisely position the valve. Positioners are solidly mounted on the actuator housing with a square nut, feeding exact valve position directly to the positioner. No lost motion assures accurate valve positioning. The modular design and compact size allow the actuator to be close coupled to the valve. Standard ISO bolt circle allows PowerRac® Actuators to be used on all DeZURIK quarter turn valves. Double-acting or fail-safe spring-return cylinder options available. PowerRac Actuators are available with safety lockout devices.

Lifetime Warranty: DeZURIK has always been committed to the highest quality products and service, and our Lifetime Warranty on PowerRac® demonstrates our confidence in the quality and features of this actuator. Contact your local DeZURIK representative for details.

Manual Gear Actuators

Manual Gear Actuators feature a cast iron housing with sintered bronze bearings on each end of the stainless steel input shaft for durability and performance. The ductile iron gear provides strength for robust applications and a long service life without maintenance. Manual Actuators are available with handwheel, chainwheel or a 2" (50mm) square nut input option. All Manual Actuators feature external position indication and are available with safety lockout devices.

Compak™ Actuators

Compak™ Actuators are a versatile rack-and-pinion design actuator available as either double- acting or fail-safe springreturn. Upper and lower bushings, combined with a large wear pad, minimize wear and increase actuator life cycle. The compact, modular design allows the actuator to be mounted for a low profile assembly. Compak™ Actuators are matched to each valve’s torque requirements to ensure that the most economical valve and actuator package is specified.

M-Series Actuators

M-Series Actuators are designed for use on smaller DeZURIK AWWA Butterfly Valves. The M-Series Actuator meets the requirements of AWWA C504 standards. The fully enclosed scotch yoke mechanism allows the M-Series Actuator to provide a torque curve that matches the torque requirements of the valve. The thread system of the traveling nut is self-locking, maintaining disc position under varying flow conditions.

Rotary Diaphragm Actuators

DeZURIK Diaphragm Actuators aredesigned specifically for use on quarter-turn valves. They feature all steel, cast iron and stainless steel construction for corrosion resistance in caustic environments. The actuators are designed for on/ off or modulating service in either a fail-open or failclosed mode. Action can be easily changed in the field with no additional parts required. The spring cartridge is cage retained at the factory for increased safety. The output shaft is supported at the top and bottom with bronze bearings that absorb side thrust and insure smooth, efficient, and accurate throttling control. Diaphragm Actuators are available with safety lockout devices.

G-Series Rotary Actuators

Actuators are available on large butterfly and plug valves where constant high torque capability throughout the stroke is required. They feature a rack and pinion design and are engineered for high-flow, high-cycle applications. G-Series Actuators are available with either manual or cylinder actuator input. G-Series Actuators provide long service life and feature a rugged, heavy-duty, cast gear sector. Multiple bronze and stainless steel bearings provide support and minimize friction to assure smooth operation and throttling action.

LA-Series Actuators

LA-Series Actuators are designed for use on large DeZURIK AWWA Butterfly Valves. The LA-Series Actuator meets the requirements of AWWA C504 standards. The linkarm mechanism allows the LA-Series Actuator to provide characterized closure that slows valve travel and increases torque as the disc comes into the seat. The actuators feature high compressive strength yoke nut bearings that ensure reliable operation and increased cycle life. The actuator is self-locking, maintaining valve position under varying flow conditions.