ᐅ Ideas for frost-proof water supply to a cistern?

Created on: 16 Jul 2017 11:07
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merlin83
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merlin83
16 Jul 2017 11:07
Hello everyone,

Attached is a sketch showing the water supply from the cistern to an outdoor faucet mounted on the house wall. My question is whether anyone has an idea on how to make the entire system frost-proof.

Problem 1: The first problem is that the water pipe, shortly before reaching the house wall, leaves the frost-safe burial depth and could potentially freeze.

Problem 2: The second problem is how to make the water outlet on the house wall frost-proof.

My idea: A frost-proof faucet that is not connected from the inside of the house wall but instead sits only about 15cm (6 inches) or 20cm (8 inches) deep inside the wall. I would protect the water line in the non-frost-safe section with a heating cable.

Does anyone have any ideas or has faced a similar problem? Are there any control systems available?

Thanks in advance.

Schematische Darstellung der Wasserversorgung eines Hauses mit Zisterne und Leitungen
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Alex85
16 Jul 2017 12:35
There is this legend that Americans spent millions of dollars developing ballpoint pens that work in space – while the Russians just use pencils.

With that in mind: Drain the pipes before winter, like the rest of the country.
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merlin83
16 Jul 2017 12:56
For the sake of completeness, it must be mentioned that this system necessarily includes a non-return valve. The water cannot flow back through the pipes even if the cistern pump is turned off and the outlet valve is opened.
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Alex85
16 Jul 2017 13:07
Then ask the person who came up with that. In my opinion, it’s a planning mistake (or a misunderstanding, and it might still work with the existing installation).

The "standard" solution would be to bring the pipe into the house and then run it back out through the wall via a frost-proof valve.
It won’t be economically feasible to integrate it into the wall the way you imagine.
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merlin83
16 Jul 2017 13:18
Dear Alex,

I am familiar with the usual procedures, and the person responsible for the mistake has been informed and is now trying to find a solution. At this point – and this also applies here – it is important to focus on finding solutions that do not result in a massive construction project.
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Alex85
16 Jul 2017 13:28
The solution is to dismantle it and carry out the work properly. Alternatively, write off the faucet. Water can still be drawn from the cistern without a raised faucet, even though it’s not ideal.