Foaming device

Details Foaming device Foaming device

1978-10-10

1980-08-26

Marcus, Michael S.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Organic polymerization

137889, 13762548, 2394275, 252359E, 261DIG26, 366150, B01F 312, B01J 800

Patent

active

042195322

ABSTRACT:
A foaming device including a housing with a cylindrical passage therethrough and four housing ports which provide communication between exterior and interior of the housing, the housing ports being connected to sources of fluids; a cylindrical spool slidably disposed within the housing provided with an axial passage therethrough and three spool ports in communication with the spool passage; the spool being displaceable to on, off and cleaning positions in a way that one has to go through the cleaning position when displacing the spool from the on to off position or vice versa.

REFERENCES:
patent: 3828821 (1974-08-01), Dotter
patent: 3893481 (1975-07-01), Watts
patent: 3913892 (1975-10-01), Ersfeld et al.
patent: 4135882 (1979-01-01), Harkness et al.

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