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Bettis Q-Series Valve Operating System (VOS)
Bettis Q-Series Valve Operating System With Pneumatic Rack and Pinion Actuator
Important: Starting in October, 2019, the base actuators are gradually being replaced with an updated design.
Documents of the new design are marked with Release 2 - 2019. The Control Modules of the Bettis Q-Series remain unchanged.
The Bettis Q-series is an integrated rack & pinion actuator concept with a base actuator and various control modules for control and feedback signals. Bettis Q-Series are designed to operate quarter turn valves or any other quarter turn application. Bettis Q-Series consists of 9 actuator sizes (spring return or double acting) and 5 control modules for conventional wiring or with bus communication protocols like AS-Interface or Foundation Fieldbus.
Bettis Q-Series Valve Operating System (VOS)


Power Source
Product Type
Pneumatic Rack and Pinion Actuator
ATEX, PED and Machinery Directives, FM CSA, IECEx and Inmetro. This product is only intended for use in large-scale fixed installations excluded from the scope of Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS 2).
Control Type
On/Off, ESD
Valve Type
Ball, butterfly, plug and any other quarter turn application
Operating Temperature
Standard -20°C to +80°C (-4°F to +176°F). Optional high and low temperature options
9 sizes: 47 to 1676 Nm (413 to 14874
Operating Pressure
up to 8.3 bar / 120 psi


  • Please refer to documentation for product specifications.