Dispenser for dispensing atomized fluids under pressure, provided with a shut-off element operated by the pressurized fluid

摘要

The invention provides a dispenser for dispensing atomized fluids under pressure, provided with a shut-off element operated by the pressurized fluid. The dispenser comprises a compression chamber housing a movable piston from which there projects an appendix which, when in the rest state, is urged by a spring to seal a discharge hole provided in a body closing said chamber, which communicates with a seat into which the end of the stem of a pressurized fluid pump can be inserted; when the fluid pressure within said chamber overcomes the resistance of the spring, the piston moves and its appendix frees the discharge hole. That end of the piston close to its appendix is slidable in a sealed manner within a cavity in a bush; a communication duct between the compression chamber and the discharge hole is freed only when said end of the piston emerges from the bush cavity on withdrawing. <IMAGE>