Roger W. Griffith, P.E.

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Careful! The Wrong Showerhead May Scald You

January 7, 2019 by Roger Griffith Leave a Comment

If not specified and installed correctly, showerheads can cause scalding!

Currently, standard shower valves and showerheads have a minimum flow rate of 2.5 GPM. There are water-saving shower valves and showerheads available with lower flow rates. WaterSense showerheads are rated at 2.0 GPM. There are also showerheads available that have 1.5, 1.0, and even 0.5 GPM flow rates. These various options for minimum flow rates in shower valves and showerheads create an opportunity for misapplication and dangerous results.

When the flow rate of a showerhead is less than the minimum flow rate of the corresponding shower valve, the potential for scalding increases for the following reasons: [Read more…]

Filed Under: Hot Water Scalding, Hot Water Systems, International Plumbing Code, Plumbing Tagged With: Showerheads

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Roger W. Griffith, P.E.
(865) 471-8142
RGriffith@GriffithEngineering.net

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Roger W. Griffith, P.E.
P.O. Box 702
Jefferson City, TN 37760
(865) 471-8142

Email: rgriffith@griffithengineering.net

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