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We revised the double shuttle valve completely.

We changed the drive from spring system in a system with cam plate, taking into account that in case of failure (great clumps could be shut) the double shuttle valve could not be destroyed during failure.
The system works as well during closing mechanism as opening mechanism. Two casing halves became one compact casing. Two great inspection holes make the service easier and allow to change the flap disk during fitted situation. Transducer signalise the proper operation and show the function of the overload relay. This changing of design guarantees a higher operation reliability and a quicker maintenance. Additional to the technical benefits the customer has also a commercial benefit, a better price-performance ratio.