Loud banging noises

[jammrcr]

We have a pressurised system that comes directly from the mains, we seem to have intermittent banging noises (almost like a pneumatic drill!) which seem to only effect the shower system (which is connect directly to the mains - no pump).

When the shower is running the noises go away. But if turned off, the noises continue.

Any ideas?

 

[PlumbBobBob]

loose pipework somewhere on the system.

 

[jammrcr]

Thanks for coming back to us Steve - how would the loose pipework explain water coming out of the shower even when the shower isn't turned on? i.e. if I flush the toilet and then use the sink taps to wash my hands whilst the cistern is refilling the shower will spurt our water - if it doesn't spurt water then then whole things just vibrates with load noises which aren't banging but more like a pneumatic drill sound - could loose pipework actually cause this kind of reaction?

 

[unguided1]

the sound you are experincing is a water hammer as steveb it can be created by loose pipes not clipped correctly loose washers inside ballvalves and taps, sometimes they can be a pain to track down, also it may not be in your house at all if you live in a semi detactched property or a flat it could be resonating from theyre property.

 

[BLOD]

If you have isolation valves on the shower supplies, try isolating it and see if the noises are still there.

 

[pobsdad]

If it happens when you flush the toilet,it could well be the ballvalve diaphragm.