Knocking Pipes

[greener]

Hi All
I have a problem with knocking pipes. When hot supply is shut at any tap there is a knocking sound from the pipes.The hot water is supplied by electric water heater. Any ideas????

 

[justlead1]

Hi A bit light on type of system. But probably water hammer.

 

[greener]

SOlution?

 

[Puddle]

support pipework correctly to taps ,reduce flow to tap if possible.

 

[Bernie2]

If its just started it might be worn washers or increased water pressure for some reason as well s Puddle says, loose pipes.

Its what happens when you suddenly stop a flow of water, you get back pressure that bangs.

 

[justlead1]

hi, Check the heater type does not require venting type taps or an expansion vessel.