Valve apparatus for evacuating and/or filling a refrigeration system
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United States of America Patent
Stats
-
Dec 31, 1985
Grant Date -
N/A
app pub date -
Oct 17, 1984
filing date -
Oct 20, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a valve apparatus for evacuating and/or filling a refrigeration system having a hermatically closeable connecting tube. The apparatus includes a piston and cylinder unit which has a central passage for receiving such a connecting tube and is pressure operable to squeeze a sealing ring into sealing engagement with the tube to facilitate the subsequent filling or evacuating of the system through the tube via valving located in a valve block connected to the piston.
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