Hot water is drawn into the toilet bowl in the toilet: a friend did not even understand how it happened

I went into the toilet, sat down, leaned against the toilet cistern, and it was warm. He carefully opened the lid, put his hand into the water - hot - even throw the eggs in there and cook for the salad. This is how my acquaintance began his story.

Boiling water in the toilet: a myth or is it still possible

It seems that the hot water in the toilet came out of the blue. At first it looked like a prank. Anything can happen. The friend thought the children were playing a trick on him. But the problem persisted for several days and was no longer a joke.

I didn't manage to solve this puzzle on my own. I called the plumber. He explained that the problem when hot water turns out to be cold in the mains, in fact, is often encountered. This phenomenon is called "squeezing" or "mixing".

One of the plumbing fixtures can cause the streams of hot and cold water to join together. At the same time, the pressure in the hot water riser is obviously higher, so it displaces cold water. It is for this reason that the boiling water ended up in the toilet cistern.

Where did the hot water come from?

It all started with the fact that the wife wanted comfort - she insisted on installing a hygienic shower in the toilet. Once it is necessary, they have set it up. But at that time no one thought that this device has one feature.

The hygienic shower has two locking devices. The first is the tap of the mixer, which regulates the temperature of the water. The second is a button on the watering can, which opens the supply of this very water.

If you open only the faucet tap, no water flows out of the shower. At the same time, the hot and cold water lines are closed in the mixer into a single circuit - squeezing begins.

As soon as a hygienic shower appeared in the apartment, it was used according to the instructions: every time after washing, the tap on the mixer was turned off. But after a while they put on the tap and began to use only the button on the shower head. Just at that moment, hot water appeared in the toilet. But no one associated it with a hygienic shower, since a lot of time had already passed after its installation.

Why boiling water in the toilet is dangerous and how to fix the problem

In fact, the problem is not only that hot water appeared in the tank. Over time, it presses up to the mixers - boiling water flows from both taps.

• Imagine a child going to the sink to wash up. Out of habit, he turns the mixer flag to the middle position, opens the tap, puts his hands under the water, and there is boiling water. You can easily get burned.
• In the apartment, not only people use cold water. It powers the washing machine and dishwasher. If you start up hot water, you can damage a sensor or an electronic control unit. Repair will cost a pretty penny.
• By the way, the toilet is also not designed for hot water. If not a ceramic cistern is installed, but some budget Chinese installation, who knows what temperature the plastic cistern will withstand. If it bursts, a couple of buckets of hot water will immediately be on the floor. Moreover, the water will continue to flood the apartment until you block it.

The problem can be eliminated at the root. To do this, it is enough to install non-return valves on the hygienic shower line or on the riser.

A hygienic shower, by the way, is not the only reason due to which hot water can be mixed. But this is a topic for another conversation. All possible reasons were told in the article on the site.