Dezurik offers a wide variety of high-quality Actuators ranging from manual varieties such as handwheels, chainwheels, extended nuts and bevel gear chainwheels to motor actuators, Spring Diaphragm Actuators, PowerRac Double Acting & Spring Return Actuators and Compak Cylinder Actuators.
Manual Actuators
Wide Variety of Manual Actuators including handwheels, chainwheels, extended nuts, bevel gear handwheels and bevel gear chainwheels. Actuators include G-Series, MG-Series, GS-series and Knife Gate Manual actuators.
DeZURIK Manual Gear Actuators are available in cast iron construction for use on BHP High-Performance Butterfly Valves, BOS-US Resilient Seated Butterfly Valves, RCV Rotary Control Valves, VPB V-Port Ball Valves and .5-3" Eccentric Plug Valves.
Manual gear cast iron actuators feature sintered bronze bearings on each end of the input shaft for durability and performance. The ductile iron gear provides strength for robust applications and a long service life without maintenance. Manual gear cast iron actuators are available with handwheel or chainwheel.
DeZURIK offers G-Series cylinder actuators for use on eccentric plug valves (PEC), full port eccentric plug valves (PEF), 3-Way & 4-Way plug valves (PTW/PFW), AWWA butterfly valves (BAW), and High Performance butterfly valves (BHP). Available in double-acting or spring-return pneumatic supply or double acting hydraulic supply.
G-Series cylinder actuators feature a rack-and-gear design for larger size rotary valves, where constant high torque capability throughout the stroke is required. It is engineered for high-flow, high-cycle applications. The G-Series line of actuators provides long service life and features a rugged, heavy cast gear sector.
Spring Diaphragm Actuators
The DR-40B and DR-85B rotary diaphragm actuators set the industry standard for accurate performance, rugged construction and long, economical service life. The 316 stainless steel materials in the DR-40B and DR-85B actuators provide corrosion resistance for a wide range of demanding industrial environments.
DeZURIK Rotary Diaphragm Actuators are designed specifically for smooth, efficient, and accurate throttling control. DeZURIK diaphragm actuators are used on quarter-turn valves including BHP High Performance Butterfly Valves, VPB V-Port Ball Valves, RCV Rotary Control Valves and .5-3" PEC Eccentric Plug Valves. These actuators are designed for on-off or modulating service in either a fail-open or fail-closed mode.
The DR-40B and DR-85B rotary diaphragm actuators set the industry standard for accurate performance, rugged construction and long, economical service life. The 316 stainless steel materials in the DR-40B and DR-85B actuators provide corrosion resistance for a wide range of demanding industrial environments. The DR-40B actuator features enclosed construction, smooth throttling control and accuracy, externally adjustable stops and external position indication. The spring cartridge is caged at the factory for increased safety and optional OSHA lockout devices are available.
For larger rotary control valves, DeZURIK offers three additional models: DR-125, DR-145A and DR-250A. These actuator sizes provide the same features in epoxy coated cast iron and steel construction for corrosion resistance.
PowerRac Double Acting & Spring Return Actuators
PowerRac Actuators are not your typical rack and pinion design actuator. PowerRac Actuators are used to provide accurate control in modulating services on all DeZURIK quarter turn valves, in addition to reliable shutoff in on/off applications. Double-acting or fail-safe spring-return cylinder options are available.
PowerRac actuators are designed for all DeZURIK quarter turn valves. They feature a time and application proven rack and pinion system for converting linear motion to rotary. PowerRac actuators feature a high opening torque, necessary for on-off applications, and they also maintain high operating torque throughout the full stroke, important on modulating service. A unique externally adjustable internal coupling between the valve shaft and the actuator drive allows a factory assembled and tested actuator to be close coupled to the valve and still provide a tightly clamped drive connection.
All PowerRac actuators are completely assembled, tested and ready for installation from the factory. Their modular design makes disassembly and assembly easy during routine maintenance or should inspection be required. The PowerRac actuator features a rugged rack and pinion design with hardened steel gears. Nominal play in the gears combined with a rigid coupling between the valve shaft and positioner drive allows thrust from the cylinder to precisely position the valve on modulating service. PowerRac actuators are enclosed and sealed to protect internal parts from grit, moisture and corrosive contaminants. All actuators are permanently lubricated for smooth, efficient operation. They feature a cast iron housing and fiberglass cylinder for excellent corrosion resistance and long life.
PowerRac actuators are designed and sized to DeZURIK’s line of quarter turn valves. By matching valve torque requirements, each actuator is sized to ensure the lowest cost, most economical actuator is used.
A unique internal square collet clamps the drive pinion to the valve shaft with a single external screw, totally eliminating all backlash in the drive connection. Direct actuator to valve mounting makes the valve/actuator package as compact as physically possible. PowerRac actuators feature external, fully adjustable travel stops. They are rated for 100 psi maximum operating pressure. Double acting actuators are sized for 60 and 80 psi supply pressures. Spring return actuators are sized for 60 psi supply pressure.
PowerRac actuators can be mounted in any of four 90 degree quadrants for maximum versatility. They are designed to be mounted on all DeZURIK quarter turn on-off and control valves. Modular design and compact size allow it to be close coupled to the valve, saving valuable space. Standardized mounting means fewer actuators need to be inventoried, saving inventory space and money. A standardized accessory bracket allows easy mounting of all commonly used accessories. Accessory options include positioners, airsets, potentiometers, speed controls, position indicating switches and 3-way/4-way solenoid valves.
As an option, PowerRac actuators are available with a throttling manual override, allowing valve operation in case of system or supply failure. For applications, where fail-safe operation is a requirement, PowerRac actuators are available with a spring return option. The spring is caged at the factory for increased safety. Double acting actuators can be converted to spring return action by adding a spring cartridge. Unlike other actuators, adding a spring cartridge to a PowerRac does not reduce the operating torque. For added versatility, action can be changed from fail open to fail closed.
PowerRac actuators feature a line of DeZURIK position indicating switches that minimize the required clearance above the actuator and provide a bold, graphic display of valve position. All electrical components are enclosed in an explosion-proof, dust-proof watertight enclosure. The screw-on cover permits easy access for calibration. Switch settings can quickly be adjusted without the use of tools, or fine-tuned to within one degree with a hex driver.
Compak Cylinder Actuators
Compak Cylinder Actuators are a versatile rack and pinion design actuator. They are available in Double Acting or Spring Return models. The compact, modular design allows the actuator to be mounted for a low-profile assembly. They feature enclosed construction and adjustable double limit stops.
DeZURIK Compak Cylinder Actuators are a versatile rack and pinion design actuator. They are available in Double Acting or Spring Return models. The compact, modular design allows the actuator to be mounted for a low-profile assembly. They feature enclosed construction and adjustable double limit stops.
Compak Actuators are available in sizes to meet a wide variety of torque requirements. They are used on DeZURIK on 0.5-3" (15-80mm) PEC Eccentric Plug Valves, 1.5-6" (40-150mm) BOS-CL Resilient Seated Butterfly Valves, and 2-8" (50-200mm) BHP High Performance Butterfly Valves.
Motor Actuators
DeZURIK maintains close relationships with all motor actuator manufacturers and can automate valves with any brand of motor actuator.
DeZURIK Knife Gate Valves are available with a wide choice of actuators including handwheel, chainwheel, bevel gear, pneumatic cylinder, hydraulic cylinder or electric motor actuators.
DeZURIK Knife Gate Valve Cylinder actuators are designed with a removable and replaceable cartridge assembly that houses the wear components for ease of maintenance. The cylinder tube is glass wound, vinyl ester, epoxy impregnated fiberglass. The seals are acrylonitrile butadiene (NBR) with a maximum temperature rating of 180ºF (83ºC). For higher temperature applications fluoro rubber (FKM) seals with the standard fiberglass tube are offered with a maximum temperature rating of 275ºF (135ºC). Steel tubes with FKM seals are available for a maximum temperature rating of 392ºF (200ºC) upon request. The minimum standard temperature rating is -58ºF (-50ºC). For corrosion resistance applications, stainless steel components are offered. All cylinder actuators are cycle tested to 50,000 cycles and are mounted to a heavy duty cast superstructure in carbon steel or stainless steel to minimize corrosion.
LA-Series Actuators are designed for use on large 30–72" (750–1800mm) DeZURIK AWWA Butterfly Valves. The LA-Series Actuator meets the requirements of AWWA C504 standards. The link-arm 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 actuator is self-locking, maintaining valve position under varying flow conditions.
The LA-Series actuators feature an input torque capability of 450 foot pounds against the open and closed position stops as standard. An optional spur gear provides a 2:1 mechanical advantage while maintaining an input torque capability of 300 foot pounds against the stops. The spur gear slows closing of the valve, minimizing the possibility of water hammer.
Manual, Pneumatic, Hydraulic, Spring Return and Electric. Custom designed failsafe air systems are also available to prevent loss of air supply.
