To make the irrigation system winter-proof, we recommend emptying and blowing out the pipelines with compressed air. For this purpose, the supply line is closed by a ball valve and a compressor is connected to the compressed air coupling. An irrigation circuit is opened and the working pressure is slowly increased to a maximum of 1.5 bar. The compressed air ensures that the water in the pipes is pressed out of the spray nozzles and drip tubes. The following options are an alternative to compressed air emptying: Drainage by ball valve at the lowest point or use of automatic drain valves at the lowest points of the irrigation system. Automatic drain valves open at each end of the irrigation process and drain into a gravel bed.
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