Flowserve Automax Supernova Pneumatic Rack and Pinion Actuator

Flowserve Automax Supernova Pneumatic Rack and Pinion Actuator

The Flowserve Automax Supernova Pneumatic Rack and Pinion Actuator is the latest development of the product, which has won worldwide praise for its reliability, versatility and safety. Rugged, yet compact construction combined with new technical solutions make this product extremely reliable & Adaptable in the severest of operating conditions.


The rotational movement of a rack and pinion actuator is accomplished via linear motion and two gears. A circular gear, referred to a “pinion” engages the teeth of a linear gear “bar” referred to as the “rack”.

Pneumatic actuators use pistons that are attached to the rack. As air or spring power is applied the to pistons, the rack is “pushed” inward or “pulled” outward. This linear movement is transferred to the rotary pinion gear (in both directions) providing bi-directional rotation.

rack and pinion
Visual of rack and pinion
(courtesy of Wikipedia)


Rack and pinion actuators pistons can be pressurized with air, gas, or oil to provide the linear the movement that spins the pinion gear. To rotate the pinion gear in the opposite direction, the air, gas, or oil must be redirected to the other sides of the piston, or use coil springs as the energy source for rotation. Rack and pinion actuators using springs are referred to as “spring-return actuators”. Actuators that rely on opposite side pressurization of the rack are referred to as “direct acting”.

Most actuators are designed for 100-degree travel with clockwise and counterclockwise travel adjustment for open and closed positions. World standard ISO mounting pad is standard to the Automax SuperNova Actuator to provide ease and flexibility in direct valve installation.

NAMUR mounting dimensions on actuator pneumatic port connections and on actuator accessory holes and drive shaft are also common design features to the Automax SuperNova Actuator to make adding pilot valves and accessories more convenient.

actuated valve
Flowserve Automax SuperNova Rack and Pinion Actuator, With Automax Solenoid Valve and Automax XML Series Limit Switch Box.


The Automax SuperNova pneumatic rack and pinion actuators are compact and save space. They are reliable, durable and provide a excellent life cycle.

For price and availability or further information on any pneumatic or electric valve automation project, please contact Sales@JeffMorrisLimited.co.uk

Product Description

The Flowserve SuperNova Automax actuator is designed for butterfly, plug, or ball valves, and offer one compact design for double acting and spring return. Precision die-cast pistons with large cylinder bearings increases efficiency and cycle life.

The Automax SuperNova actuators incorporate a precision-extruded hard anodized aluminium body and a one piece nitride coated or nickel-plated pinion gear, factory lubricated for a long trouble-free life and are designed for 100 degree travel with clockwise and counter clockwise travel adjustment for open and closed positions up to Size S200.

Available in torque ranges from 8 Nm to 5,005 Nm, for optimum actuator sizing.

Automax SuperNova Actuator Main Features

Aluminium alloy body, internally and externally hard anodised
Made in the UK
End caps, oven-treated with ultra-thick epoxy coating
Reversible action and modification of spring set without any special equipment required while on site.
Piston guide bearings with wide contact surfaces, increased efficiency and cycle life.
Independent open and closed adjustment (standard across S050-S200) is indispensable where finite adjustment is required.
Working temperatures to cover from -50°C to +150°C. Standard -20°C to +80°C.
The unique design also allows for operation with non-lubricated air.
Conforms to IEC 61508, ‘SIL’ information is available upon request
Valve and accessory connections according to the latest international standards.


• Temperatures from -50°C to +80°C (Low temperature), -20°C to +150°C (High temperature).

• Stainless steel pinion.

• Body with dual ISO mounting connections.

• ISO 5211 and DIN 3337 Star-shaped pinion drive.

• 180° rotation plus options up to 250°.(technical and dimension data available on request)
Furthermore, an entire range of accessories manufactured by Flowserve Automax, enable users to rely on a Single partner for all their valve automation system components. Replaceable top and bottom pinion bearings designed to withstand the toughest working conditions. Steel pinion with a special gaseous Nitride surface treatment affording higher resistance to corrosion than traditional coating methods. Independent mechanical adjustable travel-stops to allow regulation of open and closed positions. Continuous 0-90° regulation available on request. Concentric springs with over 10 years of proven reliability have eliminated the need to hold spares. Stainless steel fastenings throughout, for long-term corrosion resistance.

Product Literature: Automax-Supernova-Actuator-Catalogue-2012.pdf