Principle: This disk diffuser system allows the production of fine bubbles of super-pressured air.
The diffuser disk is composed of a polythene disk, a concentrically perforated membrane in EPDM, tensioning ring and a stainless steel screw on fixing.
A central reinforcement allows elimination of the air from the membrane into the air entry orifice in case the super-pressuriser cuts out.

Efficiency: A simple and quick assembly,an interchangeable membrane at low cost. However, this system needs a significant flow of super-pressurised air.