Patent ID: 8517205

Claim:
A pressure vessel comprising: a container; a lid for placing on the container, wherein by twisting the container and the lid relative to one another, the container and lid are configured to be detachably locked together by peripheral locking segments configured as a bayonet catch; and a circumferential sealing ring, in a region of a lid edge of the lid and a container edge of the container, for sealing an interior of the container in a locked position of the container and the lid against a fall in pressure, wherein the lid comprises an auxiliary device or positioning aid for facilitating a correct position of the lid on the container before a turning movement of the lid, wherein the auxiliary device or positioning aid has a positioning element at the lid edge and that projects downward from an outermost end of the lid edge, wherein the positioning element is configured to be inserted, when the lid is in the correct position on said container, into a recess which is open towards a top and is in the region of the container edge.