Product Description

 ECD(12") Disc Diffuser systems combine engineering excellence, superior component quality,and a technically advanced product concept, Unibody plastic construction means the diffuser is a single piece. Because of unique  developments related to product design and production automation you can purchase this high quality diffuser for an economical price. You get the same high quality membrane that is known for, The plastic material is made from the highest-quality, sorted recycle polypropylene resin. When the time comes to replace the diffuser, simply unscrew the old one and screw a new one in. Replacement is clean and quick, and because it is made of recycled plastic is also environmentally friendly. Oxygen transfer and head loss performance are equal to the current product line, because we have not changed the membrane or the orifice diameter of diffuser

Aerator Specification

Aeration membrane: EPDM rubber membrane, PTFE-coated EPDM membrane

Support disc: PP polypropylene

  EPDM Membrane:Black                                              PTFE Membrane:White                            

Attachment: ECD350 aeration ring structure schematic diagram

Technical Parameters

Drawings & Dimensions

Membrane Introduce

PTFE properties

 Resistance to biofouling and chemical precipitation

 Creep resistance

 Resistance to plasticiser loss

Traditional EPDM membranes have a short life in pulp and paper mills due to fouling, creep (stretching) and plasticiser loss (shrinkage). SSI's PTFE membranes can help your mill run longer, reduce downtime and

improve oxygen transfer efficiency. PTFE membranes are a small investment that can keep your mill running for years before the next membrane replacement or blower failure.

In independent studies, SSI's PTFE membranes have shown less plasticiser migration and slower creep than other materials. Maintenance of the plasticiser in SSI's PTFE membranes allows the membranes to maintain their initial properties, helping to preserve the performance and efficiency of your aeration system.

SSI's patented PTFE membrane is more durable than ordinary EPDM membranes and is becoming the global industry standard.

EPDM is a synthetic rubber product developed according to the customer's usage requirements. Due to its unique compound composition and compression moulding process, the membrane retains its physical properties for long periods of time under minimal water pressure, resists tearing, and retains its shape after years of cyclic operation, producing fine air bubbles. Our EPDM membrane products have been tried and tested in a variety of municipal and industrial wastewater treatment applications with excellent results. However, standard EPDM is not recommended for applications where solvents, grease, or oils are present, as well as high concentrations of metal salts.

PTFE (polytetrafluoroethylene) E and VITON are synthetic rubbers commonly known as fluoroelastomers. They have a wide range of resistance to a variety of chemicals, solvents, oils, greases, etc. that can cause damage to conventional rubber, and are therefore recognised as a material with excellent performance. However, the disadvantage is that they are expensive. So SSI developed the application of fluoroelastomer coatings, a patented method of permanently bonding to EPDM surfaces or other substrates, which has proven to be a proven method. SSI's new technology allows the diaphragm to not only maintain the excellent physical properties of traditional rubber materials, but also to provide the chemical, solvent, and grease resistance of the world's highest-grade rubber materials, at a cost you can afford. You can afford it. SSI's new fluoroelastomer-coated EPDM diaphragms have been proven to be free of scaling and any change in material properties in many wastewater treatment plants that have experienced diaphragm damage due to calcium build-up and solvent corrosion.

Application Cases