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Joined: Aug 2013
Posts: 104
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OP
Joined: Aug 2013
Posts: 104 |
What are the recommended weighted tubing sizes for 100, 200, 300 foot aeration lines?
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Joined: Dec 2004
Posts: 709
Ambassador Lunker
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Ambassador Lunker
Joined: Dec 2004
Posts: 709 |
Hey there!! It depends on how much air you are putting through the lines, but under normal circumstances something around 1/2" ID is fine.
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Joined: Jan 2014
Posts: 340 Likes: 3
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Joined: Jan 2014
Posts: 340 Likes: 3 |
Tom, Unless you have a large pond, you wouldn't be running 300' in the pond. As I recall, you asked earlier about a run of a few hundred feet up over your dam. Just pointing out that the run TO your pond can be done with simple poly tubing like they use for irrigation/landscaping. That is much cheaper than weighted tubing. You can get 5/8 or 3/4" poly tubing for cheap in 500' rolls. Put a manifold/valve distribution box together at your pond, then run weighted tubing into the pond and to your diffuser locations. For a simple setup where you're 2 CFM per diffuser, the 1/2" weighted tubing Sue recommends won't have a large pressure drop for a hundred feet or less. I would do the pressure drop calc if I had >2 CFM or >100' per leg.
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Joined: Aug 2013
Posts: 104
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OP
Joined: Aug 2013
Posts: 104 |
Thanks for the quick replies Sue and DNic. I have been comparing prices on system components. 3/8 weighted tubing is about 30 to 40 percent cheaper than 1/2 tubing. If there is no real decrease in performance at the distances I asked about then there would be quite a bit of savings in using the 3/8. DNic. I do plan to use common air line to the manifold but will still have three long supply lines to my diffusers. I am planning to do this project next spring and I am trying to find out the ballpark costs before I engage with salespeople. I appreciate the tip about the possible problems of having the pump below the water level behind the dam. I want a first rate system but I also want a competitive price so I am doing some research. Tom Sterling (Shelby County)
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Joined: Dec 2004
Posts: 709
Ambassador Lunker
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Ambassador Lunker
Joined: Dec 2004
Posts: 709 |
I've never liked working with the 3/8" ID. It does create quite a bit of back pressure. It's ok if you are working with project.... What compressor are you using?
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Joined: Aug 2013
Posts: 104
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OP
Joined: Aug 2013
Posts: 104 |
Hi Sue, I am working from the Vertex recommended system that your representative sent me. She recommended your larger compressor with three 1/2 inch lines of 375, 325, and 175 lengths. That amounts to close to $2000 for 1/2 inch line delivered. 3/8inch line is available for less than a dollar a foot delivered in 300 foot rolls. I am comparing costs of just under $2000 to @ $900. If the compressor can handle the job and the water turn over rate is acceptable then I could save $1000. I keep reading on PB that air can be pushed a long way with little cost compared to electricity so I am asking for details.
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