Kaeser's Modular Membrane Dryer (KMM), intended to eliminate moisture from compressed air, is a simple, reliable way to produce dew points from +40°F to -40°F. These low maintenance dryers feature a bundle of tube shaped membranes that allow only water vapor to pass. At the discharge end, a small amount of dry compressed air sweeps the water vapor out of the dryer. KMMs do not need to be oversized for peak flow conditions. Modular connections mate the KMM with prefilters and afterfilters for a quick, clean and easy installation. The optional purge saver prevents the loss of valuable compressed air and extends the life of membrane bundle.