[insight]

How do I get rid of air in my domestic water system in the house, please? I have just installed a new shower and the groaning noise now must be disturbing my poor neighbours.
Thanks in anticipation.

[speedball1]

The first thing I would do is to recharge the air chambers. We installed air chambers on all lavatorys and the kitchen sink to reduce shock, vibration and noise. Let me give you instructions on how to recharge your air chambers. Back in the 60's we were required to to put shock absorbers,(air chambers) on all bath lavatorys and kitchen sinks. Over time water and condensate built up in them and they must be recharged. First turn off the house at the main house shut off valve. Then open hot and cold faucets at the farthest bathroom to prevent air lock.(This is important.) You will find under each fixture little brass or chrome valves. These are called angle stops. With a small pail held under the angle stop to catch the run off look under the handle of the stop and you will see a nut with the stem running through it. This is called the bonnet packing nut. Put your wrench on it and back it off counterclockwise. Now open the stop and remove the stem and washer assembly, The stop will begain to drain. When it has quit draining reassemble the stop and move on to the next one. Do this on each one of your angle stops. There will be six of them in a two bath home. When you are done, close off the faucets you have opened, turn on the water to the house, and give yourself a pat on the back. You have just recharged your air chambers. If that don't get it click on back and we will go to step#2. Good luck and thank you for rating my reply. TOM