On Wed, 05 Jan 2005 20:35:08 GMT, Groggy vaguely proposed a theory ......and in reply I say!:
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distance given. ??? Makes a lot of difference.
Initial thought is it is too expensive (but I haven't checked prices). I suggest you look at Lew Hodgett's post earlier in this thread.
cheers,
Groggy
I haven't seen any information of flow rates either. However, the bore is the same smoothness as PVC so the is very little friction to slow it down, certainly smoother than pipe.
Advertising blurbs from a number of companies found during a google claim higher flow rates - without giving specific details.
Greg
But I'll bet only ONE of you is really, REALLY wrong. ;-)
-- Mark
Thank you.
The real secret for the home shop kind of person is to work a deal with a local contractor, otherwise, you can't gain economical access to 2" cutting and threading equipment.
Building a boat as I am, you would be amazed at some of the deals I make with the neighbors in this industrial area.
Could probably write a book about it.
Lew
So by your philosophy it's easier to go through life guessing rather than finding out the facts.
Forgot to mention:
Nobody in their right mind tries to thread anything above 2" pipe.
After that it is welding and flanges.
Unless you have access to the equipment, anything above 2" is strictly industrial and requires some serious material handling equipment.
Designed a system for a 100 x 100 ft industrial facility where they used
8" runs against the outer walls on two (2) sides, then crossed the other way with 4" runs every 25 ft.The take offs were street ells located on the 4" pipe.
Located a 100HP compressor at each end of the building and that was it.
The distribution system was the storage system.
This was new construction which made it a valid choice.
Trying to do that in a plant full of machinery would be tough.
Don't know if the place even exists any more.
Lew
The 4" pipe I referred to was the polyethlene, Scaling up is relatively simple with this stuff, it can also be welded if you know how (I don't).
As an aside, my BIL has some old oxy or acetylene cylinders from the gas company that he uses to trap moisture and for extra storage. inlet at the top and he put a drain in the bottom. Four of them lined up across the back of his shed give him a huge amount of air when needed.
Greg
On Thu, 06 Jan 2005 23:19:00 GMT, "Mark Jerde" vaguely proposed a theory ......and in reply I say!:
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Not quite said right. One of us is _always_ really really wrong :-<
I used to routinely thread 4" and 6" iron and black iron pipe. Just use a 4" to 2" reducer and chuck a bit of 2" in the Rigid power threader and hold a hand-threader at the end of the 4" pipe. A bit of a pain, but it works.
scott
That looks to basically be PEX pipe. I have PEX in my RV. I just don't see PEX shattering like PVC. This looks like a good idea if the joints can be made leak free.
Brian Elfert
Brian, I have tested the lines over two days and nights at 150psi. It has dropped two pounds and I am wondering if that may be due to temperature/settling of the new lines.
Greg (who is rather happy so far)
Where I work we do hydronic floor heat with PEX tubing. When pressure testing it the tubing will expand slightly. Also temperature changes will effect the pressures too. If you have had 150 PSI in it for 48 hours and only dropped 2 PSI, it ain't leaking! We do gas piping too. The inspections department requires a 10 minute test at 25 PSI with NO drop. Trust me, you have it covered! Greg
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