The system is gravity-fed. Only the kitchen has a direct connection to mains cold water - other rooms are fed from a tank. I have access to most of the pipework, so I can add a standpipe if needs be, but I want to avoid that if possible.
I've been fiddling about with the taps to flush the air out, but it's not very satisfactory (the problem comes back after a couple of days/weeks). I can't figure out where is the air coming in. I don't think there are any sections of pipe that are below ambient pressure - any explanation would be appreciated.
2006-10-05 23:53:10 · 5 answers · asked by Anonymous in Home & Garden ➔ Do It Yourself (DIY)
Oh yeah. It's an upper-floor maisonette (one floor) and the header tank is in the attic, above the boiler.
2006-10-06 02:00:23 · update #1
The normal way that a plumber would use is to pull out washing machine. Turn off isolation valves, connect the flexible cold to the "hot" open both valves and the rush of mains water will push out any air in the system. Don'y forget to turn on hot taps one at a time to ensure success. THIS DOES WORK
2006-10-06 12:03:18 · answer #1 · answered by xenon 6 · 0⤊ 0⤋
You don't say how many floors you have or how high the storage tank is! I would guess that there is a loop in the pipework somewhere that air is gathering at, maybe from bubbles being drawn in from the storage tank as it fills. If you find a high loop somewhere you could fit a T and a few feet of pipe with an automatic bleed valve on top, this would let air escape. I would first look inside the storage tank while its filling, and check how much turbulence there is, then either close the stopcock a bit so that it fills more slowly or put some sort of baffle plate between the incoming water and the outlet pipes to stop direct flow of aerated water.
2) The posts below may well clear it, but it will recur. I think that you want to solve the problem?
2006-10-06 07:04:39 · answer #2 · answered by jayktee96 7 · 0⤊ 0⤋
I have had this problem with the hot water system; I've always managed to cure it by connecting a length of hose from the cold mains tap to the last hot tap in the line and forcing the air back to the tank with water pressure.
2006-10-06 07:14:42 · answer #3 · answered by Anonymous · 0⤊ 0⤋
WHERE YOU HAVE MAINS PRESSURE USE THE COLD WATER FEED BY A MIXER TAP SAY BLOCK THE OUTLET AND TURN BOTH TAPS ON THIS WILL FORCE THE COLD BACK UP THE HOT WATER PIPE
2006-10-06 07:11:02 · answer #4 · answered by RAMSBOTTOM 5 · 0⤊ 0⤋
The only thing you can really do is contact your water supplier, they will send someone who will diagnose your problem.
2006-10-06 07:01:20 · answer #5 · answered by psychoticgenius 6 · 0⤊ 1⤋