- This topic has 3 replies, 2 voices, and was last updated 25 years, 4 months ago by
Dan Holderness.
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Lawrence M. Wasserman
My water hammer problem is interesting in that not only does it happen when a valve (any valve in the house) is closed but also when a valve is opened! Happens like this; open a valve, the pipes hammer and pressure/volume is reduced a bit. Then the hammering stops and pressure/volume is restored. Turn the valve off – even slowly, and the pipes hammer.If I close the water heater inlet valve the pipes do NOT hammer. This, of course leads me to believe there is a problem with the water heater but I simply cant figure out what it might be. I need to add that the heater is at least 7 years old but the problem only recently started.Thanks in advance for any advise!Dan
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: : My water hammer problem is interesting in that not only does it happen when a valve (any valve in the house) is closed but also when a valve is opened! Happens like this; open a valve, the pipes hammer and pressure/volume is reduced a bit. Then the hammering stops and pressure/volume is restored. Turn the valve off – even slowly, and the pipes hammer.: If I close the water heater inlet valve the pipes do NOT hammer. This, of course leads me to believe there is a problem with the water heater but I simply cant figure out what it might be. I need to add that the heater is at least 7 years old but the problem only recently started.: Thanks in advance for any advise!: Dan Check the h/w temperature AND flush out the bottom from sediment Good luck
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Most storage type of hot water systems have a none return valve on it. Sounds like either the stop cock or the none return valve are faulty. The innards are bouncing backwards and forwards, creating the hammer
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you might try changing the tap washer in the valve with which you turn off the cold water supply to the H.W.S.
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