Flushability of media separated valves describes the performance of flushing liquid out of a valve with another liquid with as less volume as possible. A good valve design with little dead volume and therefore a good flushability is important when using media separated valves in laboratory applications e.g. for cleaning processes or with expensive liquids. A flushability test with two different liquids refers as an indicator of good valve design.

This application note covers the following topics:

• Description of a test setup to make the small internal volume and the flow-optimized design visible.
• Comparison of the flushability performance of different media separated valves.