Patent ID: 7735667

Claim:
A plastic screw cap comprising two cap halves on a first component and captively held on the first component, wherein the cap halves each have an internally threaded segment and an inwardly directed ring shoulder segment for making contact with a corresponding collar of the first component, which is to be screwed together with a second component, especially for screwing a valve body of a tapping valve on an externally threaded outlet connection of a plastic or metal shipping and storage tank for liquids and loose bulk material, wherein the two halves are configured to be assembled by means of a hook connection ( 33 ) and a clip connection ( 34 ), wherein a first half ( 32 a ) of the screw cap ( 32 ) has a hook-like end ( 35 ) for hooking into a corresponding insertion hole of a bracket formed on one end of the second half of the screw cap, wherein a boss is formed on the other end of the first half of the screw cap, and wherein the boss is configured to engage radially into a corresponding hole of a bracket formed on the other end of the second half of the screw cap.