HydroGap Animation

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	These two animations show how the Hydro Gap ™ Air Gap Eductor mixes water and chemicals to dilute concentrations while preventing against backflow.
	Mixing Water and Chemicals: 1. incoming water stream is restricted by a nozzle; 2. the water stream crosses the air gap safety zone; 3. while the speed of the outgoing water is decreased by the inverted funnel shape at the bottom of the second venturi; this results in a vacuum in the middle, where the chemical is sucked into the water stream; 4. chemical flow is regulated by interchangeable metering tips; 5. water and chemical are thoroughly mixed as they leave the outlet.

Back Flow Animation

Preventing Backflow of Chemicals: 1. water pressure is suddenly reduced from the water supply side. 2. the supply side water wants to return to the lower pressure; the air gap ensures that the incoming stream is broken and will begin sucking air into the supply line (depending on amount of back-fault pressure). 3. the chemical mixture may want to flow backward from some small static pressure from the output side; the back-flow is limited by the air gap; the attempt to flow past the second venturi in the reverse direction also lowers its venting pressure. The small amount of chemical mixture that may back-flow is vented to the open side of the air gap and does not contaminate the water supply.

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