330-PS-1340 (USN 708220):  Triple-Pump Pressure-Foam Generator.  This generator was developed by the Naval Research Laboratory in cooperation with the fire-fighting industry, under the supervision of Dr. Richard L. Tuve, Head of the Engineering Research Branch, Chemical Division, Naval Research Laboratory.  This new type generator insures proper mixture of fomits (liquid) with water and air for attacking the fire.  The machine was developed for use at tank farm units.   Photograph released May 6, 1951.  (6/16/2015).
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