Abstract: A nylon or similar material ring insensitive to a product stored in a container is disposed imperviously between a valve and the inner wall of the container so as to protect the sealing gasket against chemical reactions with the stored product.

Abstract: A pump for a hand actuated device for producing an atomized spray includes a cylinder mounted with a cover cap on the neck of a container and closed in the bottom by a valve member and a stem operating a piston by means of a spring means. The discharge of the product is made through an inner passage in the stem and a lateral opening which is cleared out by movement of the piston when compressing above the spring caused by the increase of fluid pressure. The discharge pressure is so uniform and controlled by the strength of the spring, and atomization is always correct. The formation of drops as well as leakage are also avoided. The device is useful for atomizing perfumes, medicines, cleaning products, etc.

Abstract: The present invention relates to valves for pressurized containers used for atomizing products such as alcoholic or aqueous lotions, such as, pharmaceutical products.According to the invention, a caliber reducer (7) is disposed at the outer end of the discharge tube (3).By limiting the dischage rate it is possible to prevent the formation of an undivided jet or solid discharge stream and to control the atomization process when pressure is removed from the button.