An expandable hose assembly, in response to applying at least a minimum fluid pressure to the inner tube of the hose, the expandable hose assembly can be arranged longitudinally and radially along the longitudinal axis of the hose between the ends of the hose One or more of them expand to an expanded state.
Once the fluid pressure drops below the minimum fluid pressure, the hose will contract. The hose includes a thermoplastic elastomer inner layer and a slip coating on it with lubricating properties that increase the life of the hose assembly. The hose assembly may include an outer sheath or cover covering the inner tube and the slip coating.
A hose assembly, comprising: an inner tube, the inner tube includes an elastic material; and a slip coating, the slip coating is in direct contact with the inner tube, and contains a lubricant and a carrier material, wherein the The carrier material includes one or more of polyolefin and thermoplastic elastomer.
The inner tube has one or more of the following:
(1) The first length in the longitudinal direction when it is in the contracted position below the minimum expansion pressure, and the length longer than the first length when the fluid pressure inside the inner tube is equal to or greater than the minimum expansion pressure The second length.
(2) The first radius at the contraction position below the minimum expansion pressure, and the second radius larger than the first radius when the fluid pressure inside the inner tube is equal to or greater than the minimum expansion pressure And wherein the slip coating is discontinuous after the first expansion of the inner tube under a pressure higher than 289.6 kPa.
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