Shallow Well Pump (Installation)


  #1  
Old 04-19-05, 05:21 AM
BC in VT
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Question Shallow Well Pump (Installation)

I've been browsing through alot of these threads,and still have quite e few questions about installing a pump for my camp.The pump is a 1/2 horse Sears shallow well pump.I don't know exactly how old it is,it was given to me.I also have a 15-20 gal. pressure tank,that I would like to install in the camp.Here are some of my questions:
The camp sits about 175 feet from the water source.It is also about 50-70ft.above the source.I can put the pumphouse approx.within 30ft.of the shallow well,and about 10-12ft.above it.The pump has a 1&1/4"intake,and 1&1/4"exit.
Is this pump big enough to pump the water up to camp?
What size 115v wire should I use to wire it?
Can I pump the water up to the pressure tank in camp?
What size pipe should I use from the pump to camp?
I'm sure I'll have more questions,but this is a start.Thanks
 
  #2  
Old 04-20-05, 02:49 AM
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With the elevation difference between the source and point of use, you'll lose about 30-35 psi plus any friction losses in the piping.
A Sears 1/2 hp pump will probably produce 55-60 psi at best, so that doesn't leave much pressure at the top.
I prefer to have the tank at the bottom of the hill, with a checkvalve located between the pump and tank. The pressure switch sensing line should be relocated from the pump head to the camp side of the pressure tank.
There should also be a footvalve on the end of the suction line.
I'm guessing that by the time the Sears pump lifts the water from the source, pumps it through the pressure tank, checkvalves, and uphill piping, that there will not be an adequate supply at the camp.
Ron
 
  #3  
Old 04-20-05, 10:36 PM
BC in VT
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Thanks for the input,Ron.I was afraid that was the case.If I start out with 1-1/4"pipe and reduce to 1',will that help me at all?Also,I kind of expected some pressure loss,that is why I was hoping to put the pressure tank inside the camp,and use one section of pipe from pump to pressure tank.Will that help me at all?Thanks,Brian
 
  #4  
Old 04-22-05, 01:30 AM
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Using a little bigger pipe will ease friction losses a little, but you'll still have the elevation losses whether the tank is on top at the camp, or below with the pump. It takes 1 psi to lift water 2.31 feet, so elevation change is the big factor.
Ron
 
  #5  
Old 04-23-05, 02:15 AM
bob1968
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also if the water table is more then 26ft down from where the pump is located you arent going to get much if any water with a shallow well jet pump
something you might want to check out before you build yourself a pump house

sirdiealot
 
  #6  
Old 04-24-05, 12:03 AM
BC in VT
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Thanks for all the info.Since I got the pump for free,I'm going to try to make it work.If it doesn't I'll just have to buy a bigger pump.Maybe I can split the difference between the lift and line to the camp,and not exceed the 25 lift limit.
 
 

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