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The sleeve of the Z 011-A is exposed to extreme wear in this process. In the cement industry, this series is successfully built using a special NBR that mostly compensates for this stress. The sleeve otherwise formed spherically for standard flaps is delivered for filling systems without slant to avoid build-up of the medium and interruption of the material flow. The surface of the flap discs is high-gloss polished and specifically sized for low differential pressures, which considerably reduces wear and avoids adhesions. Actuation takes place via the doubly-acting EB-SYD pneumatic drives that are applied with a long-live special grease to ensure smooth operation of the drive shaft in long-term operation. The drive shaft is delivered in the special material 1.7131. This material with its high core strength is particularly wear-resistant/resilient. The Z 011-A is used for filling amounts of 25 to 50 kg in the rated widths of DN 250 to DN 350. To ensure a continually even output of the product, the interim flange fittings are installed to close on the right or left. Optionally, three-position controllers ensure precise repeat accuracy of the fitting positions when weighing the product, and thus also ensure consistent weight of the packages at all times. Quick-venting in the customer’s facility is made possible by ¼”-bores in the lateral cylinder lid of the EB-SYD on request.

Extremely low-maintenance

Fitting components, require the right design to become established as true marathon runners. Maintenance work in abrasive and quick bottling processes must be kept as low as possible. The Z 011-A series and the corresponding pneumatic dives of the EB series are extremely maintenance-friendly. The wear parts such as sleeve or sealing set of the drives can be replaced in just a few steps. Videos are available for the respective maintenance work. The shut-off flap Z 011-A has successfully become established as a long-term element in bottling systems with an output in excess of 1000 cycles per hour in two-shift operation.