Hydraulic Coolers, Pressure Line Filters, Air & Bio Gas Compressors / Vacuum Pumps / Blowers, Rotary Lobe Pumps

Fine Bubble Diffusers (Tube Type Negative Bouyancy)


The diffusers are among the most robust and versatile fine bubble diffusers commercially available. They have been manufactured for 20 years and are a robust, reliable and consistent design. They have a unique feature in that they do not require internal fixing; just throw them in.



  • Waste water treatment aeration
  • Activated sludge
  • Thermal de-stratification of reservoirs
  • Aquaculture & public aquaria


  • Life of diffuser
    Normal operating life is from 10 to 15 years


Fine bubble diffusion is inherently more effective than coarse bubble diffusion in providing a greater mixing action and aeration efficiency. We are not aware of any other fine bubble diffuser that can compare with performance.

The diffusers are of semi-flexible construction 32mm in diameter and of variable length up to 3 metres depending on the air, oxygen or carbon dioxide through-put required. The diffusers have their own ballast and will stay on the bottom of the aeration tank without the need to secure them to the base (negative buoyancy).  See Technical Information page for further details.