Valve apparatus for evacuating and/or filling a refrigeration sy

Details Valve apparatus for evacuating and/or filling a refrigeration sy Valve apparatus for evacuating and/or filling a refrigeration sy

1984-10-17

1985-12-31

Tanner, Harry B.

Refrigeration

With means for charging closed refrigeration producing system

62149, 285101, F25B 4500

Patent

active

045612641

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.

REFERENCES:
patent: 3352333 (1967-11-01), Glasgow et al.
patent: 3935713 (1976-02-01), Olson
patent: 4332273 (1982-06-01), Boyce
patent: 4476892 (1984-10-01), Boyce

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