Apr 07 2011 · From boiler mfrs and websites discussing pH for hot water boilers I have seen statements ranging from as low as 8.2 to as high as into the 11's. See Boiler Water pH. Jim - Feb 2018 to present - Chevy Bolt EV- 30000+ miles Mar 2019 to present - Tesla Model 3 - 22000+ miles
May 04 2016 · pH Boiler and Condensate pH is a measure of the acidity or basicity (alkalinity) of water on a scale running from 0 to 14. The neutral point on this scale is pH 7; values below 7 indicate increasing acidity and those from 7 to 14 indicate increasing basicity.
How water behaves in hydronic systems - HPAC Magazine
For stainless steel the range is generally higher. One stainless boiler manufacturer specifies an acceptable range of 6.5 to 9.5 pH. The acceptable pH range for iron boilers is even higher. One cast iron boiler manufacturer specifies a 10.5 pH maximum for their boiler. Fresh water in North America typically has a pH between 6.0 and 8.5.
When the boiler water pH drops below about 8.5 a corrosion called acid attack can occur. The effect exhibits rough pitted surfaces. The presence of iron oxide deposits on boiler surfaces can encourage this kind of corrosion.
Boiler water chemistry - Properties of feed water explored ...
For boiler water PH is maintained between 11-11.8 and that of feed water between 7-9. Effects. If either of the values increases water will accordingly become acidic or alkaline leading to detrimental effects caused due to acidic attack or caustic embrittlement. This may damage the boiler completely. 2.