Spray mix applicator

Claim 1

A spray mix applicator comprising: A. A hose adaptor for connection to a source of pressurized fluid which may have a relatively wide pressure range from approximately 15 P.S.I. to 125 P.S.I., B. A flow-control valve connected in fluid communication with said hose adaptor, said flow-cotrol valve being adapted to maintain a constant prescribed downstream flow rate of the incoming fluid; C. A first on-off valve connected in fluid communication with said flow-control valve; D. A fitting connected in fluid communication with said on-off valve providing: 1. a mixing chamber, and 2. a fluid injector having a sized nozzle to receive the fluid having the prescribed pressurized flow rate and a reduced diameter orifice to convert the prescribed flow into a jet stream in said mixing chamber, which creates a prescribed suction flow of a liquid chemical into said mixing chamber from a chemical container through a suction tube; E. A check valve downstream of said mixing chamber to prevent a backflow of the liquid mixture into the chemical container when said first on-off valve is moved to an off position; F. A first hose fitting connecting the downstream end of said check valve with the intake end of a length of flexible hose; G. A second hose fitting connecting the discharge end of said flexible hose to a coupling; and H. A spray nozzle, having a prescribed spray pattern, to discharge the fluid mixture at said prescribed flow rate.