Patent ID: 11873937
Assignee: MANN TEKNIK AB
Field: Transport (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A pressure tight plug for releasably sealing a coupler of a dry disconnect valve, the coupler comprising a housing, a main flow valve, and at least one urging member being rotatable with respect to the housing of the coupler, the pressure tight plug comprising:
a body comprising: an internal region for sealing adjacent the main flow valve of the coupler, and a flanged perimeter for securing the plug to the coupler,
a locking ring receivable on, and rotatable with respect to the body via the at least one urging member of the coupler,
a pressure relief lock valve for releasably engaging the locking ring, the pressure relief lock valve rotatably fixed with respect to the body, and
a pressure relief channel extending from the internal region of the body to atmosphere, via said pressure relief lock valve;
the pressure relief lock valve being arranged such that in a valve closed position the pressure relief lock valve is engaged with the locking ring restricting movement of the locking ring, and therein fixing the plug to the coupler and releasably sealing the coupler.