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Main water valve

\015 It is recommended that when you open main water supply valve into your home, you must turn valve slowly. why?\015

Answers :

Water hammer, it can actually damage pipes if you have high water pressure in your area.
Your house is all ran in pipes and fittings. A lot of fittings, every turn, every time it splits off. When you turn off and on the main water, there is some air that gets into the line. When you turn it on the water pushes the air out with water preasure. That makes a water hammer, a pounding of water. the work hammer should say a lot. Like anything else, all those fittings can leak. So turning the water reduces the preasure you put on the 100's of fittings you have in your house. Why take the chance, turn it on slowly.
\015\012
\015\012Don't mind the title it made me choose one. Main water supply valve was not one of them
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