Low Plasticizer Content
Low plasticizer content means the membrane will last longer before it hardens, shrinks or breaks. Outsourced vendors often use more plasticizers to make their rubber materials softer and more flexible. However, when EPDM rubber has too many plasticizers, they can migrate out in tiny droplets over time, resulting in membrane weight loss and failure. For this reason, SSI Aeration designs and engineers EPDM membranes for aeration diffusers with a low concentration of plasticizers to promote long-lasting performance.
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Scheduled Obsolescence
We use scheduled obsolescence to determine the end of life of our membrane tooling. When you have just a few molds and fixtures, you may be able to follow a different protocol. SSI Aeration takes a different approach to quality control to accommodate our widespread offerings. We count the cycles on our molds and perforation knives and change them on a schedule. This is because an old mold makes parts with uneven thickness, and old knives make rough slits that may not bubble uniformly across the part.
Advanced Coatings and Compounds
Customers may choose from standard EPDM membranes or EPDM membranes with special coatings or manufacturing techniques. Consider the following options for extending an EPDM membrane’s performance:
- PTFE: SSI’s patented PTFE membranes consist of an EPDM substrate with a PTFE coating. The PTFE layer protects the EPDM base from chemicals and resists surface fouling for improved performance. Based on preliminary results, SSI expects PTFE to have even lower life cycle costs than EPDM.
- Silicone: An inorganic material with high temperature resistance. SSI’s silicone membranes are specially formulated for high tear strength.
- Polyurethane: A very strong material which may be suitable for some industrial wastewaters when operating continuously.
Cutting-edge materials make membranes from SSI Aeration, Inc. the worldwide choice across industries.
EXCELLENT OXYGEN TRANSFER EFFICIENCY AND LONGEVITY
SSI Aeration, Inc. has provided excellent oxygen transfer efficiency and longevity in many municipal and industrial applications for over 20 years. Few companies have remained in the founders’ hands for so long. SSI has had the good fortune to keep our turnover very low, resulting in very knowledgeable people at all levels of the company. Since SSI has so many seasoned experts on staff, we can always improve upon previous results.
Reliable Performance
SSI membranes are built to provide stable performance with minimal shrinkage, cracking/crazing or creep/stretching over time. We use a low plasticizer content to improve flexibility and durability. During manufacturing, we add just enough plasticizers to maintain the right structure for aeration performance. Our compression molding techniques create a uniform surface area that resists tearing.
Head Loss Mitigation
Often the difference between two brands is the head loss. SSI has designed our diffuser cross-sectional thickness, uniformity and perforation knives to provide the lowest possible dynamic wet pressure (DWP) across membranes. Please visit SSI CurveGen(TM) for more data on a specific product.
Cost Efficiency
We have innovated lower-cost ways to deliver oxygen to your process through innovation. The single molded diffuser was developed at SSI, which uses the same high-quality membrane as our conventional products, but in an economical package. Have a look at our EC series tube and disc diffusers.
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1-845-454-8171
1-845-454-8094
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