For manway cover in containers onada perfe- pressure.

摘要

Lid for manway in pressure vessels, improved, essentially characterized in that it is constituted by a discoidal plate inscribed in a spherical cap whose periphery to a plate inscribed in a circle and disposed perpendicularly to the closure base where it rests sympathizes with the particularity that the opposite edge to support dorsally extending constituting an antagonistic flange to the holding claws under the twistlocks, which conventionally are articulated in a solidary ears around the mouth of the container, there being provided along to the container mouth a support hinge for the lid, with stop abatement.