I’m a handyman and I’ve never seen that kind of fill valve, the other guys are right, put in a new basic one, it will have a little finger twist knob, or a screwdriver plastic bolt to raise and lower the level of the water.Ray

Fair point, I'd still rather fix it for a few bucks vs having to instruct guests how to work the toilet. Gonna be an awkward conversation if someone needs more than just one flush

Some people have bathrooms that are rarely used

Reach in there and lift the float manually. If the water does not shut off then the fill valve is bad. If it does shut off when you lift it then it's just a matter of adjusting it.

Just replace the fill valve. It’s super easy and some don’t even require tools. Takes like 10 minutes.

I’ve had this happen to a couple toilets and it sounds to me like your fill valve is failing.

Seems like others have given the probable cause and fix. If not working with adjustment, just replace it. Not sure your locale, but my local hardware store sells a base model for $12. Or Amazon/online. Float valve is the name I believe. Easy replacement - turn off, and the disconnect water line at toilet after you flush to empty reservoir, unscrew the whole valve from underside of res (good idea to have towel/bucket for small residual water), replace and screw in new one and reattach water line. Shouldnt be more than 20mins if never done it before. Any other questions should be easy to address here. Good luck!

You'd rather turn the water on and off 5x a day for the foreseeable future vs spending $20 on a new fill valve and 30 mins of work to fix it?

Could it be scale buildup?

I have the same valve in one of my toilets. There is a clip on the float where it attaches to the lever arm. Lower the float, and then make sure the float is not obstructed by the hose or the side of the tank as it raises. Flush the toilet after you adjust the float and see if it shuts the water off. BTW, mine seemed inconsistent with shutting off just today, so I plan to replace this valve, they do wear out or get built up with sediment. Usually only $20 +/- for replacement.

Without being there : DOWN.

The black box is likely a buoancy device/swimmer.

Water flows in, box get's "pressed" upwards. When the water raises to a certain level the box is so far up that it closes the valve. Usually over some sort of lever mechanism.

Yours isn't closing the valve completely, so water keeps flowing in and then leaves through the overflow.

Possible causes

• The box lost it's buoancy, if it is a container, it has a hole or something like that. UNLIKELY, because it more or less wouldn't work at all.

• The box lost the right position. These things can come lose and then aren't closing the valve early enough. This can be adjusted by moving it in reference to the lever system (your up/down). By moving it down, it will "swim" earlier and close the valve earlier. LIKELY cause.

• Defect O ring, the inflow valve of course contains sealants, O rings. Maybe the lever pushes it shut like it should, but still a tiny amount of water comes in. POSSIBLE you would need to change the seals or even the inner mechanism of the water box.

• The mechanism got scaled, over time a crust of minerals accumulated and prevents the valve from closing. Give a good amount of citric or vinegar acid in the water tank and let it fill (Or special anti scaling stuff) POSSIBLE

Easiest way to figure out what might be the issue:

Empty the water tank(flush) and when it keeps filling see if raising to he black box /swimmer by hand closes the valve at some point. Then you verified that all seals work and scaling is not an issue. If it doesn't close no matter if the swimmer goes up then the issue is with the valve.

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I found this https://www.google.com/url?sa=t&source=web&rct=j&url=https://m.youtube.com/watch%3Fv%3Da56BCuDwClU&ved=2ahUKEwjOy8Dv7IL8AhWKmGoFHalNBJUQFnoECAwQBA&usg=AOvVaw09F31bvCFa1-9bNjcvdLEO

Basically it says there is a clip to release so you can adjust the float.

No more chance of a problem, definitely the best idea until it's fixed as well 👍

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Besides water bill, if you get a clog the water will overflow from your bowl (happened to one of my residents)

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It appears full, so if the water is running into the center overflow pipe, you need to adjust the float arm to trigger earlier. Most have a screw for adjustment but I can't see well enough from the picture to make further recommendation.

The one in the video here looks similar to yours.

I would suggest replacing your fill valve, most of the time your old valve overfills the tank because the diaphragm inside has gone bad. They are cheap and easy to replace plus added peace of mind.

>OUTLETS is the key word you changed.

Good lord. I didn't change anything. YOU are misunderstanding what the definition of 'outlet' is in the NEC.

NEC Article 100 defines an “Outlet” as a point on the wiring system at which current is taken to supply utilization equipment. The term “outlet” is often misused to refer to receptacles. Receptacle outlets are only one type of outlet. Other types of outlets include lighting outlets, appliance outlets, smoke alarm outlets, equipment outlets and so on.

A lighting outlet is an outlet intended for the direct connection of a lampholder, a luminaire or a pendant cord terminating in a lampholder. Luminaires can be ceiling-, wall- or even floor-mounted (See Figure 2). While the wiring for lighting outlets can terminate in outlet boxes and in other boxes under certain conditions, it can also terminate in junction boxes of luminaires.

So, in short, just because you don't understand what 'outlet' means in the context of the NEC, doesn't make what I wrote wrong. If you're still adamant, go ask someone in /r/electricians. I've been through hundreds of inspections, have you?

that’s not the wording of the code. Exception: Where the 20-ampere circuit supplies a single bathroom, outlets for other equipment within the same bathroom shall be permitted to be supplied in accordance with 210.23(A)(1) and (A)(2).

OUTLETS can be shared, OUTLETS is the key word you changed.

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"projects aimed at those with massive funding" - I second this.

I still enjoy the show.