Make water pipe from cistern frost-proof

I have a cistern with a pump and used it to water my garden in the summer. Since in spring, due to moving in etc., there was no time (and also no final position for the withdrawal point), I simply attached a garden hose to the pump, which now lies above ground up to the withdrawal point (water tap). Here is a sketch:


The question: How do 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 let all the water in the hose run back into the cistern. The pump would then, of course, be off (I don’t need water in winter).

Are there better options for my installation? How have you solved this? I’d rather not completely dismantle the pump every winter (unless that significantly extends the pump’s lifespan).

I take out the pump, remove the hose, and the issue is resolved. Five minutes of effort once a year.

Should it stay with the hose?

I would connect and bury a PE-HD pressure pipe (12.5 bar) like with a proper irrigation system. Put a T-piece with a valve inside the cistern. In autumn, open the valve and blow through from the other side with compressed air. Gravity is actually enough. If you want to stick with the hose, just put a connector in the cistern. Unclip the hose, let it drain or blow it out, and store the hose until spring.

That's why I asked... I would work directly with pipes and maybe implement 2-3 [Zapfstellen]. Very practical

I would do it like this.

Lay the pipe with a slope towards the cistern.
Then you don’t need to work with a compressor or anything else.

Where the blue circle is drawn, install a T-piece with a valve. This should preferably point downwards.