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Old 10-25-2013, 05:50 PM
 
Location: Long Island
8,492 posts, read 11,347,503 times
Reputation: 4737

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Quote:
Originally Posted by chetstash View Post
If I buy a compressor, where do you blow the valves out? At the box? How do you clear the line out from the main line to the box?
youtube is your friend. The videos I saw though showed the compressor being connected at the pipes outside and that connection doesn't exist for my system out there. All I have out there is a long horizontal pipe with a spigot with valve (don't think I'd connect it to that) in the middle. I may pay someone to do it for me one last time before buying a compressor myself.


How to blow out your sprinkler system Winterizing sprinkler irrigation - YouTube


How to Blow Out Your Sprinklers - YouTube
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Old 10-25-2013, 07:00 PM
 
1,083 posts, read 2,283,516 times
Reputation: 546
Quote:
Originally Posted by noupf View Post
Thanks for the prices evewrybody.


As for my compressor, i was reading that you need about 8-10 cfm for a full blow out and mine only runs at about 4.5 cfm at 90 psi and at 6 cfm at 40 psi. I'm pretty handy, but if thats what people are saying, i might just want to make sure its done correctly.

If I am wrong, or putting too much thought into it, please let me know.

Thanks
4.7 cfm at 80 psi is more than enough to blow out the standing water. I had two manifolds, both with 4 zones each, and they were completely blown out. What you'll find is the bigger compressors will blow out the lines much faster. Some the guys who do this professionally (a pro line blower?) have large gas powered compressors. Where it took me 30 minutes, these guys are in and out in 10 minutes.
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Old 10-25-2013, 07:11 PM
 
1,083 posts, read 2,283,516 times
Reputation: 546
Quote:
Originally Posted by rocafeller05 View Post
This is on sale for $100. Might go check it out this weekend.

Craftsman Horizontal Air Compressor: Bring Power to the Job with Sears
Buy Craftsman and you'll be buying another unit really soon.

Go Dewalt, or if you really like tools, try the Makita compressors. Very quiet, very stable and durable. A little more money though.
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Old 10-26-2013, 07:36 AM
 
464 posts, read 632,261 times
Reputation: 305
Quote:
Originally Posted by rh71 View Post
youtube is your friend. The videos I saw though showed the compressor being connected at the pipes outside and that connection doesn't exist for my system out there. All I have out there is a long horizontal pipe with a spigot with valve (don't think I'd connect it to that) in the middle. I may pay someone to do it for me one last time before buying a compressor myself.


How to blow out your sprinkler system Winterizing sprinkler irrigation - YouTube


How to Blow Out Your Sprinklers - YouTube

Ah yes, Youtube. I forgot about that. Thanks for the reminder.
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Old 10-28-2013, 11:04 AM
 
15 posts, read 38,791 times
Reputation: 14
I used a compressor with 6 gallon 2.6CFM@90psi and no problem. First let it charge to 120psi then regulate output to 40psi for each zone. Pipe cleared before output dropped to 30psi. I repeated once but it was not necessary.
It was a Port Cable 6 gallon.
Quote:
Originally Posted by noupf View Post
Thanks for the prices evewrybody.
As for my compressor, i was reading that you need about 8-10 cfm for a full blow out and mine only runs at about 4.5 cfm at 90 psi and at 6 cfm at 40 psi. I'm pretty handy, but if thats what people are saying, i might just want to make sure its done correctly.

If I am wrong, or putting too much thought into it, please let me know.

Thanks
Reply With Quote Quick reply to this message
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