Please help me to eradicate a very noisy cold water tap in my bathroom. When I turn the tap on there is a very loud juddering noise I suppose it could be air in the pipes but it persists.

I was just wondering how I can rememdy hammer lock or airlock? I think that is what it is. I just bought this house that has been sitting for 3 months unoccuppied. I connected my washer and when the washer starts to cycle by pulling water to the unit, I hear this bang evertime it purges water. ...

I must have locked my keyboard, or half of my keyboard? The letters on the left hand side of the notepad will type correctly however; the right side is number locked? For ex: when I try to type uiop I get 456* (How do I disable this?) thanks

When I have a shower or turn on the hot water there is a load noise each time. It seems to stop if I turn on the cold tap. Could you please tell me if it is an air lock and how can I stop it? Many thanks ...

I am pumping water half a mile through 22mm pipework at mains pressure over a hill 20ft high and it then drops 60ft where the water comes out in at varying pressures and occasionally stops for a few seconds. Could this be caused by air trapped in the pipe at the top of the hill? The water runs...