A barrel-type aerator for high-flow aeration and mixing in large basins. Air is fed down a riser pipe into a moulded barrel; the internal vortex element breaks the air stream up, and the air–water mixture leaves the barrel mouth while basin water is drawn in through the inlet opening at the base — one air connection, a large circulating flow.

Instead of releasing air at the tank floor and letting the bubbles do all the work, this aerator puts the air inside a barrel — so the air stream also moves water, and a modest air volume sets up a much larger flow through the barrel.
The barrel mouth discharges at high level while the side opening at the base draws water in, so the unit pumps basin water through itself continuously and drives a large-scale circulation around the tank instead of aerating one spot.
Inside the barrel a ribbed vortex element with a four-blade head repeatedly splits and redirects the rising air–water stream, so the air is broken into bubbles and held against the water over a longer contact path before it leaves the mouth.
The end carrier plate, the internal element and the riser pipe are separate bolted parts on a moulded barrel, and the barrel carries two flanged mounting pads — so a unit can be lifted out, opened and re-piped on site without cutting the barrel.
| Item | Specification |
|---|---|
| Diffuser type | Barrel-type vortex (mixing) aerator |
| Aeration mode | Coarse-bubble, high-flow mixing aeration |
| Barrel diameter | Φ260 – 300 mm — documented range; the exact size is confirmed in writing with the quotation |
| Barrel material | Moulded polymer — grade confirmed with the order (other grades on request) |
| Internal element | Ribbed vortex element with a four-blade head, carried on the centre axis of the barrel |
| End carrier plate | Bolt-on plate with radial vanes and a central threaded air port fitted with a metal insert |
| Inlet | Side opening at the base of the barrel |
| Discharge | Open barrel mouth at the upper end |
| Air riser pipe | Galvanised steel as standard — stainless steel on request; length and bore on request |
| Air connection | Flanged or clamped to the air main — size and type on request |
| Mounting | Two flanged mounting pads on the barrel for a support frame or tank-floor bracket |
| Immersion | Fully immersed, with the barrel carried clear of the tank floor |
| Airflow per unit | On request |
| Service area per unit | On request |
| Oxygen utilisation | On request |
| Recommended water depth | On request |
| Service temperature | On request |
| MOQ / price | On request — confirm barrel size, air flow, basin dimensions & destination |
Parameters are given only where they are documented. Airflow, service area, oxygen utilisation, water depth and temperature for this aerator depend on the basin layout, the air main and the duty point, so they are confirmed in writing against your project rather than published as a fixed figure.












Send your basin dimensions, water depth, required air flow and air main size — we'll confirm the right barrel size, quantity and export packing.
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