Block valve with several connections, open annular channel in casing and valve chambers outside casing

摘要

The block valve has a continuously open annular channel (3) in a casing (1) connecting all the connections (10). There are several valve chambers (6) on the outside of the casing divided by a web (7) into two cavities (8,9), one connected directly to the annular channel, the other connected to a connection. There is a valve insert in the chamber consisting of a valve membrane which can be brought up to the web to seal the chamber.