Dispenser adding detergent to cleaning water supply - has mixing valve supplied from pumped water and detergent tanks avoiding risk of contamination of supply

摘要

The apparatus includes a first liquid storage tank for storing water and a second liquid storage tank for storing a detergent. A nozzle has a valve for selectively interrupting flow of liquid therethrough or for discharging a flow of either the first liquid or a combination of the two first and second liquids. A pump generates pressure head in the first liquid for delivery through nozzle. The valve for mixing the two liquids includes a main flow tube for water, and an additional tube forming a T-junction with the main tube. This introduces detergent to the liquid stream. The water supply is drawn from a header tank filled via a float controlled valve from the main supply. This avoids the possibility of any feedback of detergent contaminating the supply.