The WRV-8000 is an expansion plug intended for sealing pipe openings below the water surface. It is used for planned operations during maintenance, in-water survey or repair, as well as for emergencies and salvage operations.
A watertight seal is established against the inside of the pipe by closing the turning bar, pressing the aluminium disks together and expanding the soft rubber rings. The crossbar prevents the plug from being sucked in. The through-bore and valve (exception: Type A) enable the pipe to be flooded before removing the plug.
Available sizes can be found in the Product Sheet.