CHEMICAL METING SYSTEM

摘要

A chemical meting system to dispense a known or pre-determined amount of cleaning or treating fluid without requiring any moving mechanical parts or power source, for use in fluid tanks having a volume of liquid periodically varying between a high and low level. The system utilizes the pressure changes created by the varying volume of liquid in the tank to push air from a first chamber into a second chamber containing the cleaning or treating fluid to be dispensed. The volume of air displaces a volume of the fluid to be dispensed. Once the pressure in the first chamber is equalized, the dispensing stops until the next cycle when the volume of liquid in the tank changes.