What kind of filters are used with the NO-DES system?
(A) The NO-DES system has two separate stainless steel filter housings by Fil-Trek. Both are ASME “U” stamped and compliant. A. The first filter housing is designed as a roughing filter utilizing 12 “disposable” filter bags that remove particulates down to 5 microns in size. Though the run times on these filters is dependent on the amount of particulate matter, bio-film, etc in the distribution system being flushed, we estimate typical run times will be in the 1-3 week range. Again, depending on the condition of your distribution system, run times could be longer or shorter. Recommended change out differential head pressure is between 15 and 20 psig. B. The second filter housing is designed as a polishing filter utilizing an additional 12 “disposable” filter cartridges, capable of filtering out particulates down to 1.0 micron absolute. We estimate run times for these filters to be in the 3-6 week range, again depending on the conditions as noted above. The filter vessels have a flow ca
