Abstract: A spray medium inset for a spraying pistol includes a spraying nozzle, and a needle for selectively closing the nozzle spray opening. The inset includes a connecting channel terminating in a cylindrical recess having an annular recess in the wall surrounding the cylindrical recess that snugly accommodates an annular ridge around the opening of a spray medium tank detachably secured to the connecting channel in the cylindrical recess. The connecting channel also includes a plug for normally keeping the spray opening closed with the jet needle. The tank has a concave bottom supporting a mixing shaft in a claw plug with a frangible annular zipper zone around the shaft. The mixing shaft is formed with a plug that engages a seat in the connecting channel bolt member that keeps the connecting channel closed and the spray opening closed with the shaft in its original extended position.

Abstract: A compressed fluid spraying pistol includes a central nozzle for ejecting a spraying medium, a tank for holding the spraying medium, a jet needle for opening and closing the nozzle, and a connecting channel between the nozzle and the tank. The nozzle, tank, jet needle, and connecting channel form a foot-like exchangeable member insertable within a slipper-shaped housing within the body of the pistol. The spraying medium includes a product to be sprayed and a hardener, separately contained within the tank.