MULTIPLE CHEMICAL PRODUCT EDUCTIVE DISPENSER

摘要

A dispenser 30 selectively mixes one or more chemical fluids into a motive fluid such as water by using diverting motive fluid to one or more channels 88-90 formed in an eductor body 64, at least one of the channels being an eductor 92. When the motive fluid passes through the eductor 92, a selected chemical fluid is eductively drawn into the venturi of the eductor 92, producing a mixed fluid having a desired total flow rate and dilution ratio. Additional dilution ratios, flow rates, and chemical fluids are selectable by diverting motive fluid to another channel 88-90 or combinations of channels 88-90. Carry-over of chemical fluid between dispensing is avoided by diverting the motive fluid rather than by diverting the concentrated chemical fluid.