Pneumatic Booster Valves Switch up to 4 Times Faster

Editor: Dominik Stephan

From Schubert & Salzer comes a new pneumatic volume booster that shall help to overcome the dead-time of valve pneumatic positioners.

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The 4090 pneumatic volume booster for amplifying the supply air of the set point signal from positioner to actuator is connected directly to linear or part-turn actuators.
The 4090 pneumatic volume booster for amplifying the supply air of the set point signal from positioner to actuator is connected directly to linear or part-turn actuators.
(Picture: Schubert&Salzer)

Pneumatic positioners also work as volume boosters which convert the control air at a low pressure to a proportional, high control pressure for valve positioning. However, control valves with large volume and piston actuators usually need several seconds to close or open fully. With valves from DN 150 upwards or actuator volumes > 14 dm2, this can impact control quality. The new high precision 4090 pneumatic volume booster from Schubert & Salzer Control Systems helps to amplify the air strength of the set point signal such that control valves – depending on nominal valve size – operate up to 4 times faster. Technopharm: Hall 9, stand 668

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