Incredible mixer replacement. Thought a trifling matter for 5 minutes

Nobody will tell you that, a unique case, from which he himself was stunned, it happens the same. Usually I always refer to the client's statement, who assures that the work is trivial, usually it is not, but here I myself decided and made a mistake.

Replacement

It was necessary to remove the old one, assemble and install a new mixer, it’s business.

But the hose nut did not want to twist in any way, it turns out that it simply had no thread.

I show it to the owners, I advise you to exchange the hose for another, but for now I will install the old one.

The old one had a pad with mesh, excellent. The customers asked to install the old watering can, which they purchased recently. I agree, by the diameter of the holes, I understand that this is an option to save water.

I put everything in place, it remains to turn it on and check, I don't expect any more surprises, but here ...

When you switch to the shower, the watering can cannot withstand the pressure and falls apart. I show the owners again, saying

two surprises, this is too much, put the watering can from the kit, everything is regular, and again a surprise.

The water going through the shower heats up like hell. When removing the watering can, normal temperature goes through the hose. The owners have smart gas water heater, it should automatically maintain the set temperature, but it turns out that a month ago she stopped coping with her task. We thought that replacing the old mixer would solve the problem.

They ask to come up with something, maximum, you can make fun of the watering can, slightly expanding the holes, cutting off the plastic, reducing the pressure, but no guarantee. Agree did not help, will call the master on the columns. How do you like this replacement mixer?