The 16 Gallon Mini-Central System Complete is an automatic chemical proportioner with pump that delivers pressurized, diluted chemical to Foamers, Entryway Sanitizers, and other Pump Fed Applicators. The compact design includes all of the back-room components for a small Pump Fed Central System. A 1/2" Sandpiper Air Pump draws diluted chemical from the 16 gallon tank and delivers it to the application points (up to 9 GPM @ 60 PSI). When the solution in the tank drops below a pre-set level, the Level Master™ float valve opens an air-activated water solenoid to start diluting chemical using city water pressure (35 - 125 PSI). The tank refills at 5 GPM @ 40 PSI and the system cycles continuously. A secondary fail-safe float prevents overfilling.