Der Fiur Meister said:Anyone use distilled or RO water to fill their boiler?
heaterman said:Der Fiur Meister said:Anyone use distilled or RO water to fill their boiler?
Check with the manufacturer of your boiler. RO water can be quite aggressive to ferrous metals.
Medman said:Not just ferrous metals, but brass, bronze and copper as well. I maintain dialysis equipment including high purity RO water systems, and we cannot use any materials for piping other than PEX or stainless steel for the pure water supply. Even the drains have to be glass due to the water's ability to leach metals out of the pipes. We had a cast iron drain segment completely disintegrate in 18 months - the walls of the 4 inch pipe were paper-thin when it was removed.
Regular tap water may be less pure, but it is more chemically stable and less likely to cause problems, especially if you add the proper chemicals to remove oxygen. If you have high iron, calcium or dissolved solids then you will have to consider your options. Some people here just transport water from a good source (like town water supply) in tanks and transfer it into their systems as needed.
DaveBP said:Well now you have me curious.
What is it about RO water that makes it more aggressive to metals than any other clean water? Is it highly oxygenated from the process?
DaveBP said:Well now you have me curious.
What is it about RO water that makes it more aggressive to metals than any other clean water? Is it highly oxygenated from the process?
Anybody know?