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muldoon76 01-28-2009 06:26 PM

water problems
whenever i shut off the water in my kitchen or bathroom in my upstairs, the down stairs toilet seems to run for a second or two. sound like it just finished after someone flushed it. any ideas

jporter5333 01-28-2009 07:17 PM

Sounds like high water pressure causing a water hammer. When you are running water upstairs and you shut it off it comes to an abrupt halt. The energy from the momentum in the water has to go somewhere. Sometimes it causes pipe to rattle, in your case that surge may be enough to force the fill valve in your toilet to open. Which makes me think your water pressure is too high. My in laws water pressure is so high that just walking by causes their toilets to do that sometimes. My suggestion would be to have a plumber check your water pressure and just check the whole situation out. If your water pressure is too high, he will probably want to install a pressure reducing valve and this will likely eliminate the problem. If it is not too high he may suggest installing water hammer arrestors or air chambers in the line to solve it. This is just one possibility.

muldoon76 01-30-2009 06:49 AM

water problems....
thanks for the reply. i will try that out and see if anybody can solve my problem. if its not corrected in a timely manner can other problems occur. how serious is this problem.

AllanJ 01-30-2009 07:08 AM

Does the toilet ever do that if no one was using water for a long time?

The toilet itself might have not shut off tightly.

Maybe the toilet tank flapper leaks a little and the water level is always sinking slowly and the shutoff keeps getting loose. Some experts recommend replacing the flapper every so many years rather than use science and analysis to figure out if, when, or how much it leaks.

Would the toilet still do that if you poured extra water into the tank to make the float ride higher and hold the shutoff more tightly? (Takes several tries to prove)

4just1don 01-30-2009 11:22 AM

flush the stool and rub your finger around the lip of the flappy,,,where the flappy meets the bottom seal. Now run your finger around on the bottom seal also. You just saved yourself 3 dollars from replacing it needlessly just from gunk deposits. IF its cracked or seal is rough,needs replaced!! should be done ever few months as a preventative . Would save thousands in water bills for customers!!!

Stools are sneaky water wasters. bet the stool is leaking down a bit. shut off its water while your at work,inspect water level, come home and inspect water level,,,if it drops ANY at all, the flapper leaks. The sound may correspond to the regular filling of the tank , if water hammer is doing it,you need an expansion pipe or tank.

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