Question about Garden
That depends on what was installed. Some systems have a drain at the end of each circuit or zone. When there is no water pressure, the drain opens and lets the water in each line run out. If you have this then you only need to make sure that the main line supplying the water to the valve manifold is drained. If you are not sure, then you need to hook a large compressor to the system and blow the whole thing out. Usually there is a connection at the vacuum breaker that you hook an air hose to, shut off the water inside the house and then turn on the compressor, when it builds up enough pressure you turn each circuit or zone on and let the air drive the water out. When the zone is done, you move to the next one.
Posted on Dec 09, 2016
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Posted on Jan 02, 2017
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