Scaling Down Solenoid Valves Without Reducing Flowrates

Related Vendors

DÜPERTHAL Sicherheitstechnik GmbH & Co. KG

Elementar Analysensysteme GmbH

ProMinent GmbH

Bürkert GmbH & Co. KG

Solenoid Valves: Compact and Highly Efficient

By using two coils in the valve actuator instead of only one, as in the past, TwinPower technology increases the power density. This makes it possible to reduce the size of the valves by up to half while simultaneously improving energy efficiency. Thanks to a function known as “hit-and-hold”, the actuator delivers the necessary high initial power (the “hit”) only temporarily, after which it operates in the “hold” state using only 25% of the maximum power. Depending on the application this may also allow the use of smaller power supplies, further reducing the space needed for installation.

The new Type 6624 and 6626 valves presented by Bürkert at the 2011 Hanover Fair combine this innovative actuation principle with time-tested, reliable fluidics. Compared to traditional solenoid valves with the same port diameter and an identical pressure range, the new valves are smaller by about half, yet with no compromises in their fluid-handling performance.

The lower power demand of the TwinPower technology reduces the amount of heat generated by the actuator coils, and an optimized surface-to-volume ratio further limits heat transfer to the medium. The result is better temperature control of the fluid.

Bürkert has also optimized the flow performance and cleanability of the new valves. This further reduces the danger of cross-contamination or air bubbles in the system, both of which can harm analytical accuracy. A further useful feature is a highly visible status LED showing that the instrument is switched on.

Strength in Valve Systems

The TwinPower 6624 and 6626 valves perform optimally within the context of typical Bürkert system solutions. They are part of a customized system, with matched components from a single source. Installation of the service-friendly modules is fast and easy, and the need for fewer interfaces reduces the risk of leaks.

System solutions based on the new compact TwinPower valves open up new areas of application and enable the engineering of more compact analytical instruments. If several Type 6624 valves are used in the same device, which is frequently the case, the space saved is cumulative. Thanks to the low internal volume and shorter channels between the valves, these systems save not only space, but also expensive reagents. This makes it possible to sustainably reduce operating costs throughout the entire service life of the instruments.

* The author is Segment Manager MicroFluidics, Bürkert Fluid Control Systems. Contact: Phone +49 (0) 79 40 / 10 - 0

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