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Sherlock Ohms

The Mystery of the Water Hammering

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loadster
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Re: Water Hammer stopped but not cured.
loadster   1/7/2013 12:31:04 PM
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Thanks for that enlightenment. I wondered about the vertical dampener and if it was really effective or if the air woud dissolve in time. The key is a correct and overbuilt original install and then an independent inspection by someone who knows and must be obeyed. I grew up in an older middle class residence built in late 1940s that had some bathrooms added on and remodeled. The results were percussive when more loads and larger capacity clothes- and dishwashers showed up. The copper pipes had been carefully threaded through some of the beams and joists and the inaccessible long runs were resonant. The runs we could see were silent and carefully fastened with clamps. Every appliance had a tell-tale announcement of where it was in the wash cycles. Dad never minded cuz he was gainfully employed and rarely witnessed. The rest of us could have experienced a meteor shower and never paid attention. I guess its great testimony to the quality of the pipesweating in earlier times. When father did hear it on the weekends, he threatened to call a plumber with the know-how to install a proper hammer arrestor. That house went to sale and the next remodeling with its signature drum beat.

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