Patent ID: 8801340

Claim:
A pipe part for conveying a solid particulate material at high pressure, the pipe part at least comprising: an outer tubular element stretching along a longitudinal axis (A) and having a first section and a second section being axially displaced from each other; an inner tubular element disposed inside the outer tubular element and adapted for conveying the solid particulate material from one end to another end wherein the entire inner tubular element is permeable to pressurized aeration fluid and impermeable to the solid particulate material; wherein the inner tubular element is sealingly connected with the first and second sections by a flexible support to form an aeration fluid distribution chamber between the first and second sections and the inner and outer tubular elements, which aeration fluid distribution chamber is provided with an aeration fluid inlet to define an aeration fluid flow path between the aeration fluid inlet through the inner tubular element via the aeration fluid distribution chamber; and wherein the flexible support comprises a first sealing ring fixed to the inner tubular element and to the first section of the outer tubular element by a first sealing O-ring and a second sealing ring fixed to the inner tubular element and to the second section of the outer tubular element by a second sealing O-ring.