DDI the manufacturer of the “Cube”, “Square” Channels, Low Maintance, Heat Exchangers, is proud to announce that there are 2 Heat Exchangers that operate in a Waste Water Treatment Plant CONTINUOUSLY for about 9 years WITHOUT ANY BLOCKAGE or any Maintance.
DDI opened one of the Heat Exchangers for inspection inside (both doors) for signs of blockage or any other possible problem. The channels seemed clear of any sign, or risk, of blockage. Tear and wear was minimal. Sign of rust was very faint, basically non-existent. The Pressures and Flows were tested in about 1.5 times the original design. We also performed an AIR pressure test to check for minute, tiny leakages, NONE WAS FOUND.
We did change the gazettes on the two doors (see pictures below).
3- DDI now has a Boilers and Lobe Pumps package as part of Our DDI Non Plug Heat Exchangers.
4- DDI is proud to have 35 REPRESENTATIVES covering most of North America. (A list could be found at www.ddi-heatexchangers.com)