A micron rating means little without the separation efficiency behind it. A filter rated 5 µm absolute to ISO 16889 retains far more than one rated 5 µm nominal.
Festo Classic bundles traditional valve designs from the established Festo programme. In this range these are time delay valves of the VZA, VZB, VZOA and VZOB series in port size 1/4.
Time delay valves pass on a pneumatic signal only after an adjustable delay. They serve the timed control of switching sequences in pneumatic circuits.
Time delay valves are used to stagger switching operations in pneumatic controls, for example for waiting times between work steps or for the delayed release of a valve. The Classic VZA, VZB, VZOA and VZOB series are available in size 1/4.
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