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The first post

Tuesday, October 9th 2007, 10:49am

by Quickdraw

Winterizing a drip irrigation system


Im installing a drip system around my three sides of my house. I have about 220 foot of 1/2 poly pipe as the main line. Then I have 1/4" runners coming off this line to water 45 plants & shrubs. This will be on its own zone and sprinkler valve. I will have a 25 lb pressure regulator.

My question is what happens when they come to blow out the water to prepare for winter? Will the air pressure also be limited to 25 lbs? My concern is the air pressure will blow the 1/4" tubing and emitters out of the 1/2" poly pipe.

Is this a valid concern? I called Rainbird and they didn't know...