Have a valve on the water supply on our bathroom toilet that I have never seen before & I don't know how to turn the water off. I am going to try and post a picture right below this post of the valve & hope someone can tell me how to turn it off so I can work on the toilet tank.

Unable to post a picture of the valve due to file size limitations but I can teel you it that it appears to be a 1 piece unit, including the supply hose. The house is 10 years old & has pex plumbing but the other bathroom toilet has a valve that can be shut-off. Does anybody have an idea?

No toilet ballcock (that is, toilet fill valve) that I know of allows you to shut off the water flowing into the toilet. But, all of them will allow you to stop water flow into the toilet by simply raising the float.

You really should have a shut off valve upstream of the toilet that would allow you to shut the water off to the toilet. That way, you can replace the fill valve on the toilet tank without running into problems. But, as long as you don't want/need to replace the fill valve, simply propping the float up on the toilet fill valve will stop water flow into the toilet tank, and any way you can do that (with elastic bands or levers or anything else is fair game.

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There should be one of these where it comes out of the wall to shut it off.
It is possible that it was installed without a shut off and just an elbow.
http://images.search.yahoo.com...a=Angle+stop+for+Pex

Since your home is only ten years old you should have a shut off similar to one of the ones that joecaption showed in his post. If you do not (for some unknown reason), then you will need to shut the water off at the "main shut" off for the house, in order to work on the toilet. That will be located where the water line enters your home and you have the water meter, possibly in the basement, utility room or crawlspace.

Sorry Oldpops. I read your question completely wrong and thought you were wanting a toilet fill valve that could allow the water to be shut off. It was late, I was tired, I screwed up.

Can you tell us if there are any manufacturer's markings on the thing? If so, Google Images might be able to find a picture of it.

Keep in mind the thing you're looking at might not even be a water shut off valve. If that toilet tank was sweating a lot, it could be a water mixing valve to mix hot and cold water to refill the tank with warm water to prevent toilet tank sweating. In that case, the water shut off valves for the hot and cold sides must be further upstream.

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After scouring the internet, I found the inlet valve that is being used for our bathroom toilet (see link: http://www.accortechnology.com/flowtite.html )
They are normally used in mobile homes, but I guess they are legal for stick built homes as well.

Looks pretty cheap but it is what it is.
Just turn it clockwise to shut it off.

Oldpops:

I'm willing to bet dollars to donuts that you shut off the water flow into the toilet by pulling that small white knob OUT.

That knob looks much more like a finger pull to me than a handle that's meant to be turned. If it was meant to be turned, it would have been designed accordingly. Instead, they made it annoyingly small, perfectly round and completely smooth so that anyone with wet, soapy or arthritic fingers would have to fight with it.

But, it's the right size and shape for a finger pull.

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