Inline Foam Eductors provide the simplest and most economical method of introducing a metered flow of foam concentrate into a pressurized water stream.  As opposed to “Hydro-Foam™ Technology” which is used in union with master stream nozzles, these “Venturi-Type” foam proportioners are designed to be used in conjunction with a matched constant flow end-of-line device (e.g., nozzle), where adequate water pressure is available.  The pressurized water stream creates a vacuum (the Venturi effect) which is used to suck foam concentrate into the eductor body.  The dosing of the concentrate is controlled by either an orifice plate or a metering valve.  The concentrate enters and mixes with the water stream.  The foam solution exits through the outlet of the inductor.