Pressure pack valve for dispensing particulate materials

Details Pressure pack valve for dispensing particulate materials Pressure pack valve for dispensing particulate materials

1974-09-17

1977-05-17

Reeves, Robert B.

Dispensing

With cleaning means

22240224, 251353, 251355, B65D 8314, F16K 3158

Patent

active

040237109

ABSTRACT:
A valve for a pressure pack primarily designed for dispensing powders in the absence of liquid. The valve has the usual housing, gasket, stem, spring and mounting flange components but the special problems of dispensing powders are overcome (a) by introducing a liquid film between the sealing surfaces; (b) by physically removing particulate material from the valve stem by wiping and (c) by providing a double seal between the pressurized contents of the can and the atmosphere. In a further modification, the valve stem is connected to or continuous with the dip tube.

REFERENCES:
patent: 3406846 (1968-10-01), Klun
patent: 3586216 (1971-06-01), Jordan
patent: 3722759 (1973-03-01), Rodden
patent: 3733009 (1973-05-01), Rouzier et al.

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