Active Surge SuppressorManufacturers concerned about paint line pulsation can set and forget the active surge suppressor. It automatically adjusts itself for peak performance in changing conditions. Once you set it up, you can forget about manual adjustments. Works off shop air, eliminating need for and extra cost of high pressure charge air Flushes cleanly and thoroughly in between colors Saves space with pump mount configuration Backup seal keeps paint from leaking out,