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Air Compressor for blowing pool lines?

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Air Compressor for blowing pool lines?

Old 02-26-2012, 01:52 PM
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Default Air Compressor for blowing pool lines?

OK....I know it's still winter but I want to get a headstart on this for fall when it comes time to close my pool. I use to pay a guy $50 to blow out my swimming pool lines and he use to do my Dad's as well. This past fall he disappeared, so we called a few pool companies and they wanted anywhere from $175 to $275! Fool me once but not twice! I do all my pool maintenance and I am not going to pay someone $175 for 15 minutes to blow my pool lines.

So, I'm looking for advice on what size air compressor would do the job. I have a 30,000 gallon in-ground plaster swimming pool with the deep end almost 9ft. I'm looking at portable options so I can also use it on my Dad's!
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Old 02-26-2012, 02:05 PM
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You will need a large tank with a high volume solenoid valve

My wag is a 40 gallon tank ... and a 5 hp compressor to fill it to the desired pressure

kinda like a potato gun ...
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Old 02-26-2012, 02:17 PM
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Could you use a strong shop vac in the blow mode?
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Old 02-26-2012, 02:22 PM
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Originally Posted by tango tomas View Post
Could you use a strong shop vac in the blow mode?
I was told that, but I'd like to be safe and have more psi with an air compressor. Plus, it's an excuse to tell the wife that it's needed to save money and that it would pay for itself within 2 years!
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Old 02-26-2012, 02:41 PM
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I'm taking an interest in this thread because the house we're moving into next month has a pool (salt water filtration system).

Why do you want or need to blow lines? Is this a northern climate thing or all over?


Re: your question, it's a chicken/egg proposal. Do you need a lot of Volume or a lot of Pressure to do whatever needs to be done?
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Old 02-26-2012, 02:42 PM
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Just remember if you use a compressor to use it at normal water pump pressures (60psi'ish).

I do my own, some part of it with a compressors and also use the shop vac to be sure...
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Old 02-26-2012, 02:54 PM
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Originally Posted by bamaboy473 View Post
Why do you want or need to blow lines? Is this a northern climate thing or all over?

Re: your question, it's a chicken/egg proposal. Do you need a lot of Volume or a lot of Pressure to do whatever needs to be done?
I'm in PA and blow the lines so they don't freeze!
I just need enough air to blow the water out so I can plug them! I'm just not sure how much is needed? When I talk to the pool companies where I buy my supplies, they really don't want to share too much information!
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Old 02-26-2012, 03:02 PM
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I always thought it was the volume of air that blew out lines.

Maybe call a sprinkler company.
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Old 02-26-2012, 03:22 PM
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I use a pancake compressor to blow my underground sprinkler system out, they are all 1'' lines but are fairly long and deep underground. Also my 3500 gal KOI pond and all the filters and lines. I also use it to blow all my garden hoses out and I have never had a problem. I made fitting for all my needs. if you are blowing out say a one and a half'' line and you have a valve on say the pump end you could even install a permanent fitting, With out seeing your setup it tough to say as you might have a heater and your pump also needs to be drained.
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Old 02-26-2012, 04:45 PM
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Leaf blower
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Old 02-26-2012, 04:46 PM
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Do you dive or have any friends that dive? Scuba tanks work wonders..
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Old 02-26-2012, 04:52 PM
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You need something which will provide some serious volume, not necessarily high pressure. I use to use a shop vac on blow mode, worked great. But I am guessing of you need an excuse for a compressor that would work.
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Old 02-26-2012, 04:57 PM
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Originally Posted by Boat Hound View Post
You need something which will provide some serious volume, not necessarily high pressure. I use to use a shop vac on blow mode, worked great. But I am guessing of you need an excuse for a compressor that would work.
X2 First of all, you do not need to clear the lines completely. All you need to keep lines from freezing/bursting is to give them enough space to expand that 1% that they need to do so.

Volume in the form of draining, shop vac, vacuum cleaner exhaust...all will work just fine.
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Old 02-26-2012, 04:57 PM
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Originally Posted by ericinmich View Post
Just remember if you use a compressor to use it at normal water pump pressures (60psi'ish).

I do my own, some part of it with a compressors and also use the shop vac to be sure...


Originally Posted by Crabpot Man View Post
Leaf blower


Originally Posted by Boat Hound View Post
You need something which will provide some serious volume, not necessarily high pressure. I use to use a shop vac on blow mode, worked great. But I am guessing of you need an excuse for a compressor that would work.


JMHO



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Old 02-26-2012, 05:00 PM
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Been using my shop vac for 16 years, never had a problem.
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Old 02-26-2012, 05:11 PM
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I have about the same size pool, Large shop vac would not clear the the lower drain.
So I used a small air compresser,I made a fitting using PVC ( 90 degree )and installed a air fitting
and used some tape to make sure the the seal was ok. It would blow out the deep end.
I installed it in the pump and closed my ball valve after the air bubbles started out.
Shop vac on the rest work great.
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Old 02-26-2012, 05:32 PM
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Originally Posted by The Fish Whisperer View Post
I have about the same size pool, Large shop vac would not clear the the lower drain.
So I used a small air compresser,
What size shop vac and air compressor?
I have 5.75 hp shop vac that I could use for skimmers and returns but I'm thinking it won't be enough for the drain!
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Old 02-26-2012, 06:17 PM
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Originally Posted by sea nymph View Post
What size shop vac and air compressor?
I have 5.75 hp shop vac that I could use for skimmers and returns but I'm thinking it won't be enough for the drain!
1.5 hp air compresser,
I have the same Shop vac
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Old 02-26-2012, 07:13 PM
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I used my 5 gal compressor to clear my well lines but the lil bitty had to charge 3 or 4 times until it stopped blowing water, I'm working on more volume as we speak.
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Old 02-26-2012, 08:09 PM
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Try Northern Tool for a 4 gallon compressor. For more volume convert a propane tank from a gass grill to an additional tank. You just need some fittings. Let the Compressor fill up all the tanks then blow away. My brother in law came up with the Propane tank idea. He converted one so he could fill it with air and take it on the job to do some small clean ups.
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