Don't understand why but it fixed it......

neacpa

For either you weekend plumbers or professionals......two weekends ago, we were up at our weekend place and we noticed there was a whistling noise from plumbing whenever we used any faucet or shower.  I thought it was something with the hot water heater but realized it also happened when I flushed a toilet.  So I turned on a faucet and walked around trying to see where the noise was the loudest.  I decided it was the loudest around a toilet so I figured it was the supply valve.  For some reason I took the tank lid off and realized it was louder inside the tank so it might be the tank fill valve.  Hoping it was because the supply valve was sweated on.  Replaced that and the noise stopped.  For the life of me, I cannot grasp why a tank fill valve in one toilet would whistle when that toilet was not where the water was turned on at.   Only think I can think of is that it was somehow relieving line pressure to that tank fill valve.

mogley98

Probably didn't know the words, therefore had to whistle.

Glad you got it fixed plumbing can lead to more plumbing sometimes!

bustedknee

Ghost of the old man that used to live there - straining and whistling.....

IOW - I don't have a clue. If it leaks, I replace it.

Rocky Raab

Don't understand it either, but your troubleshooting procedures were awesome.

Nanuq907

There was no alien. The flash of noise you heard in the john was not a UFO.  Swamp gas from a weather balloon was trapped in a thermal pocket and reflected the sound from Venus.

See how simple, when you drill down to the meat of it?

NeoBlackdog

Nanuq907 said:

There was no alien. The flash of noise you heard in the john was not a UFO.  Swamp gas from a weather balloon was trapped in a thermal pocket and reflected the sound from Venus  Uranus.

See how simple, when you drill down to the meat of it?

Fixed it for ya!

Brookwood

My guest room bathroom toilet makes these same high pitched whistles during rapid warm to cold outside temperature changes.  If I give the toilet a flush, the noise stops.  It may reoccur an hour or two later but sometimes not for a day or two.  

I have had the lid off and messed with the plumbing mildly (replaced the flapper) and cleaned things up but the whistle continues during the fall\winter cold months.  There are no leak issues and the thing works fine as it should so I just give it a flush now and then when it becomes bothersome.

Having tinnitus pretty bad, it just adds another band member to the orchestra! 

Rocky Raab

This is just a non-plumber's wild axx guess, but I wonder if during the times when there's a drop in system pressure (as when some other high-volume faucet is running) the offending valve is sucking in air - and thus making a whistling noise.

Remedy: replace offending valve.