MOBILE DEVICE FOR USE IN FILLING PIPES WITH FLUIDS, EMPTYING AND DRYING PIPES, AND SEPARATING DIFFERENT FLUIDS DURING THEIR CONVEYING IN A PIPE

摘要

A device for emptying fluid from a pipe and for filling the pipe with another fluid while preventing the fluids from mixing comprising a sealing gasket attached to the head end of a tubular support member which presses against the inner wall of the pipe to maintain the separation of the fluids while also drying the inner wall, and a breaking unit attached to the support member for slowing the movement of the device within the pipe thereby slowing the velocity of the fluid filling the pipe.