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An aspiration-type sprayer assembly adapted for being coupled to both the end of the hose and to a chemical container has a housing including a carrier liquid inlet passage, a chemical liquid inlet passage and a discharge passage. The cylindrical rotatable valve within the housing has a carrier liqu

An aspiration-type sprayer assembly adapted for being coupled to both the end of the hose and to a chemical container has a housing including a carrier liquid inlet passage, a chemical liquid inlet passage and a discharge passage. The cylindrical rotatable valve within the housing has a carrier liquid duct and a chemical liquid duct opening into the carrier duct for interconnecting the inlet passage in a first rotative position of the valve, and the valve is capable of closing the inlet passages in a second rotative position of the valve. The rotatable nozzle versus the discharge in selective directions, and the assembly is capable of being manipulated by the provision of a handle grip. An anti-siphon assembly is provided at the coupling between the sprayer housing and the water hose end to avoid pressure and back flow from the sprayer. And chemical/water mix can be exchanged substituting the various tube retainers having different size inlet ports.

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1. A sprayer assembly for connection to a container of a liquid chemical to be diluted upon aspiration by a pressurized stream of carrier liquid, comprising: a housing having a carrier liquid inlet passage, a chemical liquid inlet passage and a discharge passage; a valve mounted within said housing

1. A sprayer assembly for connection to a container of a liquid chemical to be diluted upon aspiration by a pressurized stream of carrier liquid, comprising: a housing having a carrier liquid inlet passage, a chemical liquid inlet passage and a discharge passage; a valve mounted within said housing having means for interconnecting said inlet passages in a first rotative position of the valve, said means comprising a carrier liquid duct and a chemical liquid duct both integrally formed in said valve and opening into said carrier liquid duct, said valve being manually rotatable about an axis perpendicular to both said carrier liquid duct and said chemical liquid duct, and said valve having means for closing the inlet passages in a second rotative position of the valve.