Abstract: An apparatus for closing off a path in a fluid delivery system, comprising: a closing assembly providing a first fluid path between a first conduit and a second conduit, wherein the closing assembly comprises a remotely actuatable valve mechanism that closes the first fluid path and provides a second fluid path from either the first conduit or the second conduit to a third conduit, wherein the remotely acuatable valve mechanism closes the first fluid path when a predetermined condition is sensed in the fluid delivery system.

Abstract: An inflatable sealing assembly integrated with a flow carrier which seals the inside of the flow carrier upon detection of a physical condition (e.g. fluid pressure). The inflatable sealing assembly includes a housing, a compartment in the interior of the housing for storing an inflatable sealing device, an inflating mechanism, and a sensor. Upon detection of the physical condition in the exterior and/or interior of the flow carrier, the sensor activates the inflating mechanism, preferably automatically, to inflate and deploy the inflatable sealing device which seals off the inside of the flow carrier. The inflatable sealing device may be an air bag.