I had the same problem. i unscrewed the float arm and inside is a small cone shaped piece of plastic with a hole in that lets the water through. I replaced this with one with a bigger hole so that more water is allowed through faster. It's now been a month and no noise after flushing.
A toilet flushing that creates a groaning sound in the pipes of a house is usually caused by gas buildup in the lines. As the waste and water pass through, it displaces the gases causing the audible noise.
if the pipes are warm or hot at the time the coldwater passes though them, it can cause the pipes to cool and contract
It's the water going through the pipes.
Replace the fill valve or throttle down the isolation valve
Probably due to an airlock in the cold water system (feed pipe).
i makes a noise called oaiso and the oaiso noise is a noise of blowing in pan pipes coz the blowing is vibrating of the sides how this answeres ur question or either go to china to find out
There are several reason why the plumbing will bang when a toilet is flushed. The most common cause is something called water hammer or hydraulic shock. it is caused by a sudden increase in water pressure. Another cause is air in the pipes.
Two primary reasons: There is air trapped in the pipes. It causes vibrations when it is subjected to compression. It can be releaved by bleeding air out of the piping and installing special piping devices to the pipes. The pipes themselves are expanding and contracting due to the changes in temperature, rubbing against their brackets and the supporting lumber.
Depending where the noise was coming from, but this question is most likely to be answered in this way. If you switched a valve off and the noise was coming before the valve in the pipes, that would indicate a burst pipe.
Sink is not vented properly and the water from the p-trap under the sink COULD be sucked out by the hydrostatic pressure from the toilet flushing.
I reckon there is no air vent pipe on the drain line of the toilet you are flushing and the siphon action is sucking out the water in the loft toilet also.
This is most likely to be water hammer. The most likely reason is because a pipe has not been held down properly with a pipe clamp. It normally happens when a toilet is filling up or when taps are switched off suddenly. Its due to the water pressure in the pipes that makes the water rebound in the pipes causing them to rattle and make a noise