Fluid handling – Back flow prevention by vacuum breaking – Air vent in liquid flow line
Patent
1975-05-12
1977-04-26
Cline, William R.
Fluid handling
Back flow prevention by vacuum breaking
Air vent in liquid flow line
251261, 251301, F16K 116, F16K 4500
Patent
active
040195295
ABSTRACT:
This invention relates to a valve having a valve member in the form of a roller supported by a roller support such that the roller when moved to closed position is forced against a valve seat and such that inlet pressure in said valve aids in maintaining said roller in a tight closed position, said valve preferably comprising a tubular valve housing having an axial inlet and a peripheral outlet.
REFERENCES:
patent: 870377 (1907-11-01), Marett
patent: 2165874 (1939-07-01), Sauls
patent: 2517534 (1950-08-01), Courtot
patent: 2730115 (1956-01-01), Hempel
patent: 3538953 (1970-11-01), Berger
patent: 3684242 (1972-08-01), Hauffe et al.
Faxen Per Torsten
Karlsson Frans Harry
Cline William R.
Hykon-Patent Aktiebolag
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