OKLAHOMA CITY, OK — The Little Giant Pump Company originated as the Little Giant Vaporizer Company and was organized under the laws of Oklahoma on March 8, 1940, “for the purpose of manufacturing and distributing units for the evaporation and vaporization of water to be used in evaporative cooling and humidifying installations, paint spray booths and the manufacturing of cooking utensils, making dies and doing outside diecasting for other manufacturers.”

Literature of the time tells us the Vaporizer Pump was a small, low-pressure, high-volume pump that could be used wherever recirculation was a problem. It was “completely sealed in oil and hermetically sealed.” Applications included “recirculation of water for evaporative coolers; circulations of water in minnow tanks; circulation of water in home garden pools and fountains; circulation of light coolant oils for machine tools; laboratory uses and many other widely varied applications.”