Outdoor Wood Furnace Info
All-Purpose OWF Discussions => Plumbing => Topic started by: Jeremy.flaugh on December 31, 2014, 06:02:36 PM
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I'm looking for 1 1/4 O2 barrier pex but I'm having a hard time finding any and let alone finding 1 1/4 in stock.
If I were to use two 1" pex " A total of four" Two return two supply and Tee'ed off in a balanced fashion to bring them back together and split them apart does anyone see an issue with that?
Also ends and elbows for 1 1/4" pex is insane.
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Why do you need O2 barrier?
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How much do you need? eBay has 100', 250', 500', etc. rolls of O2 barrier 1-1/4" PEX all over it and it even has FREE shipping. Fittings are also on eBay.
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Jwood
To make a long story short I'm building a gassifer and integrating a large heat exchanger directly into the boiler to eliminate a flat plate heat exchanger and additional pump.
And I have existing appliances that are ferrous that I cant let o2 get to and I just want to bury a forward compatible PEX in the ground also.
Judd
I never thought of EBay you are right it's loaded with 1.25 Pex I was checking amazon pexsypply and houseneeds.
Thanks
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How many ft roughly do you need?
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About 130 underground and 50 inside.
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Are you looking for insulated underground pipe?
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Ebay look for a seller name honestystilllives 1-888-591-0943 this might be there number great people to buy from i do most of my business with them
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Ebay look for a seller name honestystilllives 1-888-591-0943 this might be there number great people to buy from i do most of my business with them
I've bought stuff from em before as well, good pricing and lightening fast shipping
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2 sets of 1" will definately reduce the pressure and increase the flow, versuses a single set of 1.25"; but then again that is alot of water/BTUs to be pushing
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Little John, the difference in cross sectional area between a single 1.25" line (normal ID of around 1") and two 1" lines (normal ID of around 3/4" each) is less than 0.1 square inches in favor of dual lines. The friction loss of more water touching the inner walls in two lines coupled with the additional fittings required to bring them back into one line completely negates any advantage of an additional 0.1 square inches of additional space and probably is more detrimental than sticking with a single 1.25" line.
An advantage to dual lines, however, would be if you wanted to have two separate flows in the case of running two different buildings or appliances that would cause such a large drop in water temperature that you couldn't run that same water through a second appliance effectively. It would also be an advantage if you wanted an emergency backup setup where one line runs your heat and the other runs your water heater, etc. with each line on it's own pump. If the heat line failed, you could shut it down, do some quick simple plumbing inside of the house, and have the remaining line running your heat again.
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:post: Judd
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OK, OK ...
I guess you guys are right, 2x 1" or 1x 1.25" -> do have about the same flow/cross section. How can I ever show my face again :bag:
Hopefully I can still add some useful info to this conversation.
In regards to fitting, yes 1.25" fitting/elbows can be expensive; but just like in life, when you go bigger (HP, tire size, pumps, piping) it gets more expensive
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OK, OK ...
I guess you guys are right, 2x 1" or 1x 1.25" -> do have about the same flow/cross section. How can I ever show my face again :bag:
Hopefully I can still add some useful info to this conversation.
In regards to fitting, yes 1.25" fitting/elbows can be expensive; but just like in life, when you go bigger (HP, tire size, pumps, piping) it gets more expensive
Little John you are correct in saying 2 --1 inch line will flow more water than 1 line of 1 1/4
1 pex will move 7.5 gpm at 4 feet per second so 2 lines would move 15 gpm
1 1/4 pex will move11.2 gpm at 4 feet per second
pex al pex I have not seen a chart for 1 1/4 but I think 2 -- 1 inch lines would still move more?