Patent ID: 7490621
Filing Date: 2009-02-17
Classification: B29C,B67D,F16K,F16L,Y10T

Abstract:
1. A method for producing a tapping valve formed as a plastic injection-molded part for plastic or metal shipping and storage tanks for liquids, with a valve body, which has an externally threaded outlet connection and an inlet connection with a screw cap for screwing the valve body onto the externally threaded outlet connection of the liquid tank, the screw cap being captively held and movable on the inlet connection between a collar of the inlet connection and support studs of the valve body for a rotating shaft of a valve closing element, the method comprising in a first process step, producing the screw cap in a first injection mold, then placing the screw cap in a second injection mold, and in a second process step, the producing of the valve body in the second injection mold such that the inlet connection of the valve body extends through an opening of a ring shoulder and a threaded hole of the screw cap with clearance, wherein the collar of the inlet connection of the valve body is located inside the screw cap.