I understand the CFM issue that commercial lawn service uses to bleed 99% of the water out of the sprinkler system, but read on...
1. Water expands about
9% in volume when frozen:
2. If you use a "Home" compressor like this
6-gallon 5 CFM Air Compressor:
I understand that using a "Home" Compressor like this: it is not a complete evacuation of water so
some 50% of the water stays at the bottom of the the Black Polyethylene Pipe in the winter. Even when frozen, the water expands a bit but no big deal, there is air above it to expand:
My neighbor does exactly this (using a 6-gallon Air Compressor) and has never had any issues in the last 10 years.
Any thoughts/advices using the "Home" Air Compressor?
PS: My Sprinkler System is: Copper Pipe from House to Underground, then White PVC Pipe to Valves Box, then Black Polyethylene Pipe to Sprinkler Heads.
I understand that PVC Pipe is hard and more prone to freeze damage than Black Polyethylene Pipe, but the PVC Pipe is a short run from the Underground to the Valves Box.
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