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February 1, 2013

Control valves operate four times faster with this volume booster


With the newly developed, high-precision 4090 pneumatic volume booster it is possible to amplify the air strength of the set point signal from the positioner to the actuator such that these control valves (depending on the nominal valve size) operate up to four times faster without further modification. The pneumatic volume booster is based on a diaphragm system with which the pressure and volumetric flow of the control air are increased up to 6 bars through the controlled input of supply air. In the volume booster, the control air is fed through an adjustable bypass to the actuator. By controlling the flowrate in the bypass, the switching threshold for activating the amplifying air can be controlled precisely. The 4090 pneumatic volume booster enables significant reductions in switching times. — Schubert & Salzer Control Systems GmbH, Ingolstadt, Germany

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