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  #11  
Old 05-29-2011, 08:42 AM
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Wet_Boots Wet_Boots is online now
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Have you considered using non-cemented PVC for the mainline?
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  #12  
Old 05-29-2011, 01:33 PM
Mdirrigation Mdirrigation is offline
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My question would be , why does the existing pipe need to be replaced ? What are you trying to accomplish ?
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  #13  
Old 05-29-2011, 01:47 PM
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Wet_Boots Wet_Boots is online now
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the OP said the new main will be larger than the old one - reminds me of a time when I installed a secondary 3/4-inch copper mainline in a basement, next to the original one, to vastly improve the system performance.
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  #14  
Old 05-29-2011, 03:25 PM
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CAPT Stream Rotar CAPT Stream Rotar is offline
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I hope you pull it..

Trenching pipe is so messy and time consuming..
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  #15  
Old 05-29-2011, 03:49 PM
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mitchgo mitchgo is offline
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Pulling 4" pipe?

What $80,000 tractor machine that pulls do you have that I want?
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  #16  
Old 05-29-2011, 03:53 PM
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not only does it pull 4-inch - it even pulls 4-inch gasketed bell-end pipe
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  #17  
Old 05-29-2011, 04:29 PM
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greenmonster304 greenmonster304 is offline
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You can pull 4" HD poly it comes in rolls then you need to fuse the couplings.
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  #18  
Old 05-29-2011, 06:29 PM
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Sprinkus Sprinkus is offline
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I'd at least go with gasketed pipe, even if you use solvent weld fittings.
Also make sure and thrust block the fittings properly.
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  #19  
Old 05-30-2011, 01:16 AM
WalkGood WalkGood is offline
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Quote:
Originally Posted by greenmonster304 View Post
You can pull 4" HD poly it comes in rolls then you need to fuse the couplings.
I'd hate to be the guy that has to hold n spin that roll of poly.
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  #20  
Old 05-30-2011, 09:50 AM
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regularguy regularguy is offline
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Quote:
Originally Posted by Mdirrigation View Post
My question would be , why does the existing pipe need to be replaced ? What are you trying to accomplish ?
The original main line wasn't thought out too well, it is a 2 inch irrigation poly line that is rated for 100 psi and I have pressures that are right there all the time. The current line handles 30 gpm but I would like to add another pump and boost the gpm to 60 and that is more than the current line could handle and would push me past or right to 5 fps. I am also planning for the future in that I may someday install a third pump so that is whay I want to use 4 inch just in case I ever want to go to 90 gpm.

Are schedule 40 gasketed pvc fittings super expensive? I would think that they would be and that may prevent me from going that route and force me to solvent weld. Thanks for the suggestions
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