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Code in most areas requires a backflow preventer. If your yard will freeze in the winter, you want an air-port to blow the system out. The systems work best when you have lots of pressure. I was going re-do mine myself after the pool, but the estimate was $1200, for 2 zones, plus repair/reconnection of the front yard. He had to run the main line all the way around the house. I paid $100 extra, and he installed 2 hosebibs in the far corners of my yard.
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James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
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