公开(公告)号：US3612361A

公开(公告)日：1971-10-12

申请号：US3612361D

申请日：1969-10-20

Applicant: SEAQUIST VALVE CO

Inventor： EWALD RONALD F ,  PLATT NORMAN E

IPC: B65D83/14

CPC classification number: B65D83/34 ,  B05B7/1245 ,  B05B15/025

Abstract: A self-cleaning valve for an aerosol container wherein a propellant is dispensed prior and subsequent to the aerosol product to clean the valve. This operation is obtained by designing the valve body with separate openings in respective communication with the aerosol product and propellant. As the valve stem is depressed, first the propellant escapes through the propellant opening and cleans the valve until the opening is closed by a valve seat on the lower portion of the valve stem; then the product is discharged. The process is reversed when the valve stem is released.