Toilet water supply has been off a while...try to turn back on now and get a horrible loud noise...

[saabturbodrivr]

Hi guys,

I have a toilet that I had turned off the water supply to a while ago (perhaps 2 months+). I turned it off because the toilet was running often...and although likely a simple fix, I was having another bathroom redone soon and was having a new toilet put in this bathroom to, so I just turned it off.

Now I want to turn it back on ... otherwise my pregnant wife has to walk downstairs from the bedroom to use the bathroom (and our bathroom redo is a little delayed). I slowly opened the water supply valve back up, and get a terrible loud sound...a loud vibrating that reverberates through the wall ... it sounds so bad I fear something bad will happen, so I turn it back off. I never get the valve fully open due to the sound giving me worries about doing so.

What is this phenomenon? Should I deal with the sound and open the valve all the way, and it will eventually stop?

Thanks!!!

 

[Terry]

It may just be a loose washer in the shutoff at the wall. The water passing through vibrates the loose washer and makes that foghorn sound.
Open all the way and get the tank filled. The noise should stop when it's opened up.

 

[Sponsor]

 

[saabturbodrivr]

Forghorn sound...that is kind of how I would describe it! Very startling, makes me think that if I don't shut it immediately, something will burst and my home will be flooded! I'll give it another shot and be brave. Thanks!!

 

[saabturbodrivr]

Actually, this is the sound....not mine but sounds the same...

Just want to confirm we're talking about the same noise before I try anything

 

[Reach4]

Not what I expected to hear. Foghorns don't sound like that.

Turn on the valve all of the way on. If the noise starts again, replace the stop valve with a 1/4 turn stop valve and/or replace the fill valve. If the one you changed does not fix it, replace the other one too.

 

[Gary Swart]

This may not be relevant to the problem you have, but you should be aware that toilet supply valves should be either fully on or totally off. That's the main reason for the 1/4 turn valves.

 

[FullySprinklered]

You don't need a plumber. You need a priest.