Precise, hygienic and dynamic switching and control
Bürkert has expanded its range of electromotive process valves to include diaphragm valves. The Type 3323 shut-off valve and the Type 3363 control valve are two additions to Bürkert’s line of electromotive valves, which are said to set new standards with respect to performance, reliability and cost-effectiveness.
The valves are suitable for applications that either do not require compressed air or for which compressed air is not available due to the difficulty of conveying it to the application. They feature high control accuracy and highly dynamic control, which is claimed to allow them to reach the set point exactly and instantaneously with dynamic performance of 4mm/s and maximum closing time of below 4.5s.
Overshooting or undershooting, which can occur with pneumatic valves, is not possible. Integration of the piloting function in the compact drive eliminates the need for control cabinet installation, as well as field piping and the power supply for the compressed air. The electromotive drive principle allows adaptation of the driving force to the respective application, which increases the life of the diaphragms and maintenance intervals, reducing maintenance costs.
Electromotive valves are cost-effective due to their low energy costs and savings throughout the entire system. Bürkert says a special advantage of its solution is an innovative cogging torque controller, which fixes the position of the valve without additional energy consumption. If there is a power outage the safety position can be approached via the optional SAFEPOS energy storage pack and can be adapted to the particular process. A mechanical position indicator with a 360° LED clearly indicates the position and status of the valve at all times.
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