Foam producing venturi and method of using same

Details Foam producing venturi and method of using same Foam producing venturi and method of using same

1993-10-25

1995-01-17

Miles, Tim

Gas and liquid contact apparatus

Multiple diverse liquids

261 782, 261DIG46, 169 15, B01F 304

Patent

active

053823893

ABSTRACT:
A venturi for producing medium expansion foam for use in fire fighting applications. The new venturi contains a swirl inducer bushing near the entry of the nozzle, a two section frustum shaped diffuser, and a plurality of angularly oriented air injector openings. The venturi progressively decreases in cross-sectional area from a discharge point thereof to a throat of the nozzle. The cross-sectional design together with orientation of the air injector permits high quality lasting foam to be produced under a broad fluid supply pressure while minimizing the amount of foam reagent employed.

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