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#1
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It it OK to kave a pressure tank a LONG way from the pressure switch
I have a pressure tank in my garage which is, of course, connected to a tee
with the gauge and switch located very close to it. I would like to leave the gauge & switch where they are but extend the 1" line going to the tank about 70 feet. This would allow me to place the tank under my house in an area where the "crawl" is about 9 feet high. Is there any reason not to have the pressure tank so far from the switch? I would also like to insulate the tank so it will not sweat during our hot, very humid summers. What would be the best material for this? I do not want to harbor mold so I would like to keep air from getting between the insulation and the tank. Many thanks for any help. |
#2
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It it OK to kave a pressure tank a LONG way from the pressureswitch
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#3
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It it OK to kave a pressure tank a LONG way from the pressure switch
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#4
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It it OK to kave a pressure tank a LONG way from the pressureswitch
Bob F wrote:
wrote: .... ... leave the gauge & switch where they are but extend the 1" line going to the tank about 70 feet... .... I would imagine that you could end up with the switch cycling of-on-off at the end of a cycle ... ... Larger pipe to the tank, larger on/off pressure difference, or a separate small pipe back from the tank to the switch could alleviate this possibility. This is all hypothetical. I haven't done it. .... I haven't, either, but 70-ft of 1" didn't seem out of sight for a pressure drop but I'd surely agree larger would be make for less. Well, let's just go look at Crane handbook... For Sch 40, dP (psi)/100-ft vs flow rate is 1" 1-1/4" 1 0.05 2 0.2 0.04 3 0.3 0.09 4 0.5 0.15 5 0.8 0.22 6 1.2 0.3 8 2.0 0.5 10 3.0 0.8 15 6.4 1.6 20 11.0 2.8 Assuming plastic instead of steel will be somewhat less; I don't have data at hand to show just how much. A 70-ft run instead of 100 is probably about a wash when add a fitting/elbow or two. Unless he has a sizable well capacity, it would seem the 1" would probably be enough but certainly the reduction in losses by going up to 1-1/4" are sizable. Amazing what a little r-square can do when r1 isn't it??? -- |
#5
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It it OK to kave a pressure tank a LONG way from the pressure switch
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#6
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It it OK to kave a pressure tank a LONG way from the pressureswitch
dpb wrote:
.... For Sch 40, dP (psi)/100-ft vs flow rate is 1" 1-1/4" 1 0.05 2 0.2 0.04 3 0.3 0.09 4 0.5 0.15 5 0.8 0.22 6 1.2 0.3 8 2.0 0.5 10 3.0 0.8 15 6.4 1.6 20 11.0 2.8 Oh, first column is flow rate (gpm) of 60F water at 100 psi inlet pressure. -- |
#7
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It it OK to kave a pressure tank a LONG way from the pressure switch
wrote in message ... I have a pressure tank in my garage which is, of course, connected to a tee with the gauge and switch located very close to it. I would like to leave the gauge & switch where they are but extend the 1" line going to the tank about 70 feet. This would allow me to place the tank under my house in an area where the "crawl" is about 9 feet high. I would suggest you run tubing back to the pressure switch. Since it's easier to run wire than tubing, you might just re-locate the pressure switch at the tank. You can "do the math" and run the appropriately sized wire, or you can just place a "contactor" at the pump or near the well head such that the pressure switch would only operate the contactor (a fraction of an amp) rather than the pump (10 to 20 amps.) It's best to have the pressure switch on a separate connection to the tank. If you have to use a "T" then use a "T" on the outlet side of the pump. When no water is being drawn it will read true pressure. If water is being drawn it will tend to "see" a lower pressure which will cause the pump to come on a bit sooner. Is there any reason not to have the pressure tank so far from the switch? In industrial plants, pressure sensors are often connected to "instrumentation" tubes. The tubes are run to the process being monitored. I would also like to insulate the tank so it will not sweat during our hot, very humid summers. What would be the best material for this? I do not want to harbor mold so I would like to keep air from getting between the insulation and the tank. You would have to find some way of spraying insultation onto the tank. Any place where moist air can find it's way to the tank will cause local condensation. Many thanks for any help. |
#8
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It it OK to kave a pressure tank a LONG way from the pressure switch
The pressure switch needs to be with in a few feet of the tank.
wrote in message ... I have a pressure tank in my garage which is, of course, connected to a tee with the gauge and switch located very close to it. I would like to leave the gauge & switch where they are but extend the 1" line going to the tank about 70 feet. This would allow me to place the tank under my house in an area where the "crawl" is about 9 feet high. Is there any reason not to have the pressure tank so far from the switch? I would also like to insulate the tank so it will not sweat during our hot, very humid summers. What would be the best material for this? I do not want to harbor mold so I would like to keep air from getting between the insulation and the tank. Many thanks for any help. |
#9
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It it OK to kave a pressure tank a LONG way from the pressure switch
What does the pressure tank do? Why is it there? Can you just take it
out? What happens if it you remove the tank? Connected to what type of pipe? Accomplishing what, at present? -- Christopher A. Young Learn more about Jesus www.lds.org .. wrote in message ... I have a pressure tank in my garage which is, of course, connected to a tee with the gauge and switch located very close to it. I would like to leave the gauge & switch where they are but extend the 1" line going to the tank about 70 feet. This would allow me to place the tank under my house in an area where the "crawl" is about 9 feet high. Is there any reason not to have the pressure tank so far from the switch? I would also like to insulate the tank so it will not sweat during our hot, very humid summers. What would be the best material for this? I do not want to harbor mold so I would like to keep air from getting between the insulation and the tank. Many thanks for any help. |
#10
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It it OK to kave a pressure tank a LONG way from the pressure switch
Stormin Mormon wrote:
What does the pressure tank do? Why is it there? Can you just take it out? What happens if it you remove the tank? Connected to what type of pipe? Accomplishing what, at present? Better to keep quiet and perhaps be thought stupid than to speak and remove all doubt. |
#11
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It it OK to kave a pressure tank a LONG way from the pressure switch
The pump cannot run continuously because (1) it requires cooling via the
water flowing through it and we're not using water all the time, and (2) We're not rich enough to pay the elec bill. Thus the pump must be on a pressure switch. When we use water the pressure in the line drops and the pump kicks on. Without a pressure tank, the pump would turn on & within a second the pressure would go up enough to turn it off. A secone later the pressure would drop enough to turn it on again. Rapid cycling will destroy the pump. The pressure tank allows a good bit of water to be used before the pressure drops enough to turn the pump on. Then it stays on long enough to refill the tank. The bigger the tank, the less frequently it cycles. On Mon, 7 Jun 2010 07:59:19 -0400, "Stormin Mormon" wrote: What does the pressure tank do? Why is it there? Can you just take it out? What happens if it you remove the tank? Connected to what type of pipe? Accomplishing what, at present? |
#12
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It it OK to kave a pressure tank a LONG way from the pressure switch
Now we're getting some where. You're talking about some kind of
pressure tank, for a pumped water system? Now, is this a residence, business, camper, remote fire fighting operation, or what? Sure helps if you provide more complete information. -- Christopher A. Young Learn more about Jesus www.lds.org .. wrote in message ... The pump cannot run continuously because (1) it requires cooling via the water flowing through it and we're not using water all the time, and (2) We're not rich enough to pay the elec bill. Thus the pump must be on a pressure switch. When we use water the pressure in the line drops and the pump kicks on. Without a pressure tank, the pump would turn on & within a second the pressure would go up enough to turn it off. A secone later the pressure would drop enough to turn it on again. Rapid cycling will destroy the pump. The pressure tank allows a good bit of water to be used before the pressure drops enough to turn the pump on. Then it stays on long enough to refill the tank. The bigger the tank, the less frequently it cycles. On Mon, 7 Jun 2010 07:59:19 -0400, "Stormin Mormon" wrote: What does the pressure tank do? Why is it there? Can you just take it out? What happens if it you remove the tank? Connected to what type of pipe? Accomplishing what, at present? |
#13
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It it OK to kave a pressure tank a LONG way from the pressure switch
It appears that you failed to notice the reply from Bob F
Thanks for the several good answers given. On Sun, 13 Jun 2010 07:56:34 -0400, "Stormin Mormon" wrote: Now we're getting some where. You're talking about some kind of pressure tank, for a pumped water system? Now, is this a residence, business, camper, remote fire fighting operation, or what? Sure helps if you provide more complete information. |
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