Pneumatically operated airflow valve

Details Pneumatically operated airflow valve Pneumatically operated airflow valve

1979-04-05

1980-09-09

Nozick, Bernard

Gas separation

With separating media bypass or system gas pressure relief

Pressure relief means to or from atmosphere

55213, 55418, 55316, 55467, 55473, 165 16, 251 612, B01D 4642

Patent

active

042215757

ABSTRACT:
A novel, automatic, pneumatically operated bypass valve is provided in an r duct connecting a fan powered gas-particulate filter unit and an air conditioner unit. The bypass valve contains a bellows, which is automatically inflated by pressurized air transmitted thereto from the filter unit through a separate conduit, thereby closing the bypass valve when the filter unit fan is in operation. When the filter unit fan is turned off, the pressure in the filter unit falls to ambient, which automatically deflates the bellows and opens the bypass valve to provide a fresh air path to the air conditioner unit.

REFERENCES:
patent: 2091562 (1937-08-01), Palmer
patent: 2327664 (1943-08-01), Otis
patent: 3687570 (1972-08-01), Ellison
patent: 3766844 (1973-10-01), Donnelly et al.
patent: 3899311 (1975-08-01), Rapp

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