Fluid handling – With repair – tapping – assembly – or disassembly means – Tapping a pipe – keg – or apertured tank under pressure
Patent
1978-04-17
1980-05-27
Schwadron, Martin P.
Fluid handling
With repair, tapping, assembly, or disassembly means
Tapping a pipe, keg, or apertured tank under pressure
222 83, F16K 4300
Patent
active
042045592
ABSTRACT:
A line tap valve for tapping refrigerant lines of refrigeration and air conditioning systems, said line tap valve having a housing which is adapted to be clamped to a refrigeration line, said housing having two non-aligned but communicating valve bodies or chambers, a line piercing valve in one valve body or chamber and a service valve in the other valve body or chamber, said line piercing valve and said service valve being independently operable, to control the flow into and out of the refrigerant line. The service valve is removable and replaceable without refrigerant leakage when the line piercing valve is in closed position. The line piercing valve is retractable from the refrigerant line to provide an unimpeded flow therethrough when the service valve is in closed condition.
REFERENCES:
patent: 2827913 (1958-03-01), Wagner
patent: 3198206 (1965-08-01), O'Brien
patent: 3428075 (1969-02-01), Wagner
patent: 3548861 (1970-12-01), Mullins
patent: 3850192 (1974-11-01), Mullins
patent: 3973584 (1976-08-01), McKinnon et al.
patent: 3978881 (1976-09-01), Mouranie
Schwadron Martin P.
Walton G. L.
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