FIELD: machine building.
SUBSTANCE: through hole of an air exhaust channel is closed with a hygroscopic seal, and serially with the through hole and hygroscopic seal there is an air exhaust valve, comprising a seat and a valve element, which may rise from the seat as a result of pressure in a connection channel.
EFFECT: invention provides for the possibility of total automatic and tight removal of air from a connection.
16 cl, 5 dwg
| Title | Year | Author | Number |
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