ᐅ Make the water line from the rainwater cistern frost-proof

Created on: 23 Oct 2019 07:01
C
Changeling
I have a cistern with a pump that I used to water my garden during the summer. Since there wasn’t enough time in spring before moving in (and also because the final position of the outlet wasn’t decided yet), I simply connected a garden hose to the pump, which now runs above ground to the outlet (spigot). Here is a sketch:

Sketch of a house with green piping, red radiator, and ground line.


My question: How can I make this frost-proof? My idea was to install some kind of valve at the blue circle, which I would open in winter to drain all the water from the hose back into the cistern. The pump would of course be turned off (I don’t need water in winter).

Are there better solutions for this setup? How have you dealt with similar situations? I’d prefer not to completely remove the pump every winter unless it significantly extends the pump’s lifespan.
rick201824 Oct 2019 09:23
You will need to dig trenches for the water outlets anyway. From these outlets, you can later create irrigation zones. Place the valve box simply near the pump. If the garden is not very large and/or complicated, I would consider installing an irrigation system right away.
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Grantlhaua
24 Oct 2019 12:01
rick2018 schrieb:

You don’t need to control the pump via smart home, but rather the valves. The pump detects the pressure drop and then starts. For the pump, only an on/off switch is needed. This can, of course, also be implemented through a smart home system.
With the weather station, you’ll stop watering before winter anyway. The individual zones then need to be emptied. The easiest way is with compressed air, cycling through the valves. It’s quick.

My pump has an automatic function, meaning there is always 5 bar (72.5 psi) pressure in the supply line up to the valves. Therefore, I want to be able to switch off the pump during frost conditions.