Valve for connecting to a pipe, comprises inelastic outer tube and elastic inner tube with a space between them, when the space is filled with a fluid through a passage, it expands and seals the tube

摘要

The valve comprises a tubular section, which consists of an inelastic outer tube (30) and an elastic inner tube (40,45), which is sealingly arranged at the end of the outer tube. A fluid inlet (60) passes through the outer tube into the space (50,55) between the outer and inner tubes. When the space (50,55) is filled with a fluid through the inlet, the space expands in such a way that the walls of the elastic tube sealingly lie against each other. The outer tube is preferably a rubber hose and the inner tube is a fabric tube.