When should a customer purchase a Mist Eliminator vs. a coalescing filter for oil removal?
The functions of these filters overlap but they are not the same product and do not deliver the same air quality. A Mist Eliminator provides liquid oil removal to 1 ppm while a fine coalescer can protect down to 0.001 ppm. A mist eliminator should be used as an insurance policy against the separator failing in the air compressor. It can handle large slugs of oil and protect the downsteam system against such an event. We see the need for both products in the system. A fine coalescer serves a different function. It ensures air quality for your critical process. There are firms focusing on energy audits and energy costs and we know they tend to recommend mist eliminators as the method to eliminate oil with a lower pressure drop. Our primary goal is on high quality compressed air and to ensure this we recommend that fine oil coalescing filters be used. Air quality is not a given and mist eliminators do have design limitations.
