Method and apparatus for zero emissions testing of a refrigerant

Details Method and apparatus for zero emissions testing of a refrigerant Method and apparatus for zero emissions testing of a refrigerant

1993-02-01

1994-09-13

Wayner, William E.

Refrigeration

With indicator or tester

Diverse function indicators or testers

73 2342, 422103, 436 39, F25B 4900

Patent

active

053457749

ABSTRACT:
An external fluid circuit capable of being connected between service valves provided on a closed system containing a refrigerant. The external fluid circuit is provided with a testing tube and testing tube holder. A flow meter and flow regulator are connected in series in the external fluid circuit. The flow meter is provided with a transparent chamber containing a float indicator member to indicate when a desired rate of refrigerant flow through the circuit has been achieved. A three-way toggle valve is provided between the flow meter and testing tube holder allowing the refrigerant to be directed through the testing tube or through a bypass loop. A hand-held compressor downstream of the testing tube holder induces sufficient flow pressure difference where there is insufficient system pressure to cause proper flow through the external fluid circuit.

REFERENCES:
patent: 4110998 (1978-09-01), Owen
patent: 4923806 (1990-05-01), Klodowski
patent: 5071768 (1991-12-01), Klodowski
patent: 5214931 (1992-12-01), Paige

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