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Starting Member


Saturday, July 16th 2016, 2:17pm

How to install a valve to blow out sprinklers


I have a 3 zone system with 1" lines. The water meter is at the curb, with a manual shut off value for the system immediately past the meter. The solenoid valves are next to the house, around 50 feet away, below grade in a box. The valves are Irritrol, most of the rotors are Hunter, with some Irritrol and consumer grade Rainbird mixed in. I'll gladly replace any rotor that could be a problem. I'm in suburban Atlanta, zone 7b.

I want to put a valve onto the system so that I can have someone blow it out in the fall. My question is: Do I put it after the solenoids, on each zone, or on the main line, before the solenoids? As best as I can tell, these Irritrol valves cannot be opened manually, but they have a flow regulator. They're model 205tf.

Should I even bother with a blow out in this zone? I'm wondering if just opening the valve housing to drain out the lines in the fall is good enough.



Supreme Member

Posts: 5,323

Location: Metro NYC


Saturday, July 16th 2016, 3:25pm

You cut in a boiler drain just downstream of the system shutoff valve, and that's your blowout valve.

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