The GreenBioClean Digital Dual Dosing Unit, offers true digital time cycle programming and is comprimised with two solenoid valves, digital timer units, suction pipe, tank connector and a transparent supply hose. The unit is fitted with an extra air administering valve controlled by an digital timer and including an LCD screen. This unique and innovative solution allows air into the feed hose for cleaning and eliminates possible blockade that could otherwise occur during operation. It also simulates a toilet flush, without using flush water. This "air flush" allows the Gel to travel trough the vacuum pipes. The timer can be programmed to open the solenoid valve at given interval for a pre-determined time ensuring accurate and controlled dosing routines are maintained. When the solenoid valve is open (i.e. for 1 second every 90 minutes), the pressure differential in the vacuum pipe will allow the gel or the liquid to be drawn into the vacuum system.

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