Stop moisture from reaching tools and equipment. These dryers have a polypropylene filter element that expands when wet, shutting off airflow until the element is replaced. They remove any remaining moisture in your air line that aftercoolers and separators don’t catch. Install them as close as possible to sensitive devices such as plasma cutters and paint guns. Because airflow will stop without warning, you should only use these dryers in systems where a sudden shutoff won’t damage tools and equipment. To prevent debris from clogging the filter element, install them after an oil filter.

Dual air dryers keep your system running if one filter shuts down. Their auto-switch valve redirects airflow to the other filter as soon as saturation is reached. You can also replace filters one at a time without stopping airflow to the entire system. The valve’s position shows which dryer is in use.