• For application to ball, plug and butterfly valves.
• Can be used in other quarter-turn applications, such as dampers and pressure regulators.
• Actuators are made of high duty Aluminum alloys, providing optimum strength and corrosion resistance.
• Compact rack & pinion design.
• Can be supplied in single (spring return) or double acting versions.
• Choice from twelve sizes models, with a torque range from 12 to 4000 Nm (106 to 35400 lbf.in.).
• Mounting for solenoid valves and position signallers to the NAMUR standard (VDI/VDE 3845).
• Valve mounting and drive dimensions to the ISO 5211 or DIN 3337.
• Drive shaft provided with insert, for low cost, versatile direct valve mountings.
• Anti-blow-out shaft
• Ample choice of spring packages
  • Spring return, single acting actuators are used in most safety systems. Their ability to automatically return the valve to its fail-safe position on air failure provides the vital link for ultimate system shut down. El-O-Matic spring return actuators have modular spring packages, which enable them to be easily applied to a wide variety of supply pressures and operating conditions. 
• Limit stops
  • Limit stops are necessary where the precise adjustment of the valve’s open position is required. These are standard on all actuators up to 1600 Nm. and optional on the two larger sizes. Actuators with double stroke adjustment are also available for those applications on high performance butterfly valves (closed position).
• Standardization
  • El-O-Matic actuators comply fully with all the relevant industry standards. Control interfaces for solenoid valves, switch boxes and positioners satisfy the NAMUR standard (VDI/VDE 3845). Valve mounting and drive dimensions are to ISO 5211 standard (option DIN 3337).
• Inserts
  • Actuator sizes up to 1600 Nm. (14160 lb.in.) are fitted with drive inserts. This enables actuators to be directly mounted onto suitable valves and eliminates the need for a bracket and coupling type mounting kit. The increasing use of direct mounts significantly cuts the cost of the valve/actuator assembly. Standard actuators are fitted with square drive inserts in accordance with ISO 5211 (or DIN 3337), but a wide variety of other inserts are also available. Special inserts may have oversize or undersize squares, or with double-D or shaft key way forms. These can be supplied on factory built actuators or as loose items, drive inserts are easily replaceable at distributor or end user level.
    Where direct mounts are not possible, for instance on valves with exposed grand packing, the use of inserts often simplifies the design of the mounting kit.
• Life Span
  • El-O-Matic actuators have a patented 3-point guiding system, full synthetic bearings and a rack & pinion gearing. High precision gear cutting methods provide close tolerances and ensure minimum gear backlash, all of which guarantees virtually the longest working life of any actuator in the industry.
• Applications
  • The choice of actuator depends primarily on the valves’ torque requirement, and with El-O-Matic you have the widest range possible, 12 basic model sizes covering a torque range from 12 to 4000 Nm. (106 to 35400 lb.in.).
    But for optimum actuator sizing many factors may need consideration. El-O-Matic has all available relevant technical data on practically all the quarter-turn valve manufacturers in the world. This electronic database enables us to select just the right actuator for you, whatever the valve type: ball, butterfly or plug valve.
• Special Versions

  • Special actuators can be built to suit a wide variety of extreme applications: high temperature, low temperature, offshore, fire safe, with different operating media, etc.  Ask our technical specialists for more information about these special applications.

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• Pressure                  0.2 to 8 bar (3 to 120 PSI)
• Temperature            -20°C to +80°C  (-4°F to +176°F)
• Materials Housing:
• Aluminium alloy
• Shaft: Hard anodised aluminium alloy
• Finish Polyester non-TGIC based powder coating
• Lifespan Minimum of 500,000 cycles