Abstract: The aerating device comprises an air conduit assembled from a plurality of aerating modules tightly held together. Each of the aerating modules comprises an annular disperser and a sectional tubular member on which the disperser is horizontally cantilevered in the area where the components of the tubular member are held together and with which it communicates by compressed air. The disperser has a seating ring provided with a hole for compressed air to pass, the axis of the hole being misaligned with respect to the axis of the annular disperser, and a dispersing member defining, together with the seating ring, an annular space wherein a ring-shaped throttling member is fixed place. The disperser is capable of performing setting-up motions round the vertical axis of the hole in the seating ring and is provided with device for its being held rigidly to the sectional tubular member, which device has a vertical passage coaxial with the holes in the seating ring.

Abstract: A device for the saturation of liquids with gases is described and makes it possible to compensate for temperature-dependent changes in the length of the string of the aerating device without affecting its intactness. The device includes an air conduit connected to coaxially arranged and tightly held together aerating modules each of which has a perforated tubular air distributor coaxially encompassed with a tubular dispersing element. The air distributor of at least one module is sectional as for length and is made up of three coaxial components. A central component of the three components is in fact a tubular perforated element having its ends extended, with a possibility of sliding reciprocatingly, in the respective ends of extreme components. The dispersing element of the module overlaps at least partially the zone of interconnection of the sectional air distributor.