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Valve in dometic vt2500 toilet won't close

When I press the pedal to flush the toilet, the valve opens but then doesn't close. Please help

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You might want to try and lubricate the rubber gasket with some silicone grease or plumbers grease. If that doesn't work, follow this link. I'm sure there is information for your toilet at the Dometic website.

Posted on Mar 20, 2009


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The Toto toilet runs and will not shut off.

The reason for toilets running is one of 2 problems. 1)The flush valve (or flapper) is not closing/sealing properly. 2)The fill valve is not closing properly.

Regarding the flush valve; usually it's the chain connecting the handle to the valve hanging up on something. When the valve is closed, the chain should have a little bit of slack in it. Sometimes these valves actually get cracks in them from age and that doesn't allow a good seal. So you could try a new flapper or whole new flush valve.

Regarding the fill valve; most of these have a floatation device. Make sure the float is able to rise all the way to shut off the valve. Watch the water come into the tank; there is an overflow tube in the middle of the tank. If the water goes into the over flow tube that means the float is not rising high enough to shut of the valve. Where I live there is a lot of lime in the water and this accumulates and can causes problems with float movement. Or it could be out of adjustment. The old floats had an arm you could bend to adjust and the newer ones twist up or down on the valve pedestal.

In closing, both valves are fairly cheap and anyone with some basic tools and a little know how can change them out. I hope this helps.

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I saw the other answers and what are they talking about. thetford is a rv toilet the two bottem pedals are control by cable one cable broke You just have to get pedal repair kit pull toilet out and repair I have a repair kit coming as we speak exact same problem

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I have an American Stadard Toilet that is only 2 years old. The toilet will not stop running. Could you give me some trouble shooting ideas?

There's a lot of variety in the works in the toilet tank. Assuming this is not a pressure-assisted toilet-----First understand the three valves are: 1. The shutoff valve - on the supply line coming into the toilet tank. 2. The fill valve - inside the tank, opens with the float descends, closes when the tank fills up. 3. The flush valve - inside the tank on the bottom. Common old style is a flapper on a pivot. Yours may operate straight up and down rather than on a pivot.
Three very common problems are---- 1. The chain that connects the handle to lift the flush valve is getting caught, not allowing the flush valve to close. 2. There is problem with the flush valve being able to get a good seal when it closes - could be debris or misalignment. 3. The fill valve is not closing when the tank is full, could need adjustment or there is debris preventing the valve to seat. . Here's are some steps to diagnose---- close the shutoff valve. Wait a few minutes as you watch the level in the tank. If the water level decreases, you have problem with the flush valve. To confirm the fill valve as the problem, turn the shutoff valve back on. Lift up on the float that is supposed to turn off the fill valve. If it shuts off, you should be able to adjust it - most have a +/- plastic adjustment screw. But if raising the float by hand only slows it down, you have problem with the seating of the fill valve - which can sometimes be cleaned, but more often would need to be replaced.
I hope this is helpful. Thanks for using FixYa.

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