Pipe Size and Type Rec for pump install and water line

[jjmc95]

New well 175 ft deep, 75ft static water level, 30 gpm recharge rate. Water will be pumped to 80 gallon pressure tank about 20 feet from well head with 40/60 psi pressure switch and then on another 30 or so feet to my house.

Temporarily dropping this Vevor Pump https://www.vevor.com/deep-well-pum...AdYzBunx54wpsYDWsaoP8UzcJo-HPJmNWdXWJO9OOfn_o

This will run for 2-6 months, during which time I will test my water for grit and set up my solar situation. My plan is to put in a Grundfod 11-sqf-2 Helical rotor pump in the spring, assuming the grit level ain't too bad.

My plan is to use black 1 1/4" poly pipe down into the well and then from the well to the house. This means I need something like 225-250ft of pipe.

My questions are:

1. What are the pros and cons to poly vs. PVC or other options, particularly as underground water lines?
2. What psi rating and other specs should I shoot for with the poly?
3. Any tips on finding longer lengths of poly pipe? seems they often come in 100ft lengths. Or should I just use 100ft lengths and have to make a connection in my well? Is that pretty normal?
4. Would it be a bad idea to run 1 inch pipe instead of 1 1/4 inch? It seems more widely available in longer lengths.

Thanks!

 

[GReynolds929]

Should be able to get 300' roll from a supply house. Iconix and Ferguson waterworks carry it in my area. I would use 200 psi at minimum.

 

[Sponsor]

 

[RetiredInGueydan]

New well 175 ft deep, 75ft static water level, 30 gpm recharge rate. Water will be pumped to 80 gallon pressure tank about 20 feet from well head with 40/60 psi pressure switch and then on another 30 or so feet to my house.

Temporarily dropping this Vevor Pump https://www.vevor.com/deep-well-pum...AdYzBunx54wpsYDWsaoP8UzcJo-HPJmNWdXWJO9OOfn_o

This will run for 2-6 months, during which time I will test my water for grit and set up my solar situation. My plan is to put in a Grundfod 11-sqf-2 Helical rotor pump in the spring, assuming the grit level ain't too bad.

My plan is to use black 1 1/4" poly pipe down into the well and then from the well to the house. This means I need something like 225-250ft of pipe.

My questions are:

1. What are the pros and cons to poly vs. PVC or other options, particularly as underground water lines?
2. What psi rating and other specs should I shoot for with the poly?
3. Any tips on finding longer lengths of poly pipe? seems they often come in 100ft lengths. Or should I just use 100ft lengths and have to make a connection in my well? Is that pretty normal?
4. Would it be a bad idea to run 1 inch pipe instead of 1 1/4 inch? It seems more widely available in longer lengths.

Thanks!

The temporary pump chosen doesn't build enough head to be used in that application.

 

[Reach4]

What are the pros and cons to poly vs. PVC or other options, particularly as underground water lines?

Polyethelene will be more forgiving of thermal expansion and contraction.

Do not pull the pipe tight, but snake it in the trench.

 

[jjmc95]

The temporary pump chosen doesn't build enough head to be used in that application.

Oh no! you are right. so would this one be okay? https://www.vevor.com/deep-well-pum...eel-water-pump-31-7-gpm-450-ft-p_010436589825

I only need 5 gpm

 

[RetiredInGueydan]

Oh no! you are right. so would this one be okay? https://www.vevor.com/deep-well-pum...eel-water-pump-31-7-gpm-450-ft-p_010436589825

I only need 5 gpm

Based upon the limited information on those pumps, I feel that the 1.5HP with 276ft head would be a better fit for your needs. With your 75' static level and high replenish rate that 450ft head is unnecessary.

 

[FredG]

Since those pumps are 115v, you are going to have to run bigger wire to the pump, making cheap, expensive in the long run. Install one properly sized pump, and be done with it.

 

[Reach4]

Since those pumps are 115v, you are going to have to run bigger wire to the pump, making cheap, expensive in the long run. Install one properly sized pump, and be done with it.

I am skeptical of the specs. Imagine a 115 V 2HP motor.

 

[FredG]

I am skeptical of the specs. Imagine a 115 V 2HP motor.

It’s possible, just not for $150. Using a cheap chinese pump in a cistern is probably worth the risk, since it’s easy to replace. I wouldn’t want to be the fool that has to pull it up out of the well often to replace it. Pumps rarely go out when it’s 75 and sunny.

 

[RetiredInGueydan]

It’s possible, just not for $150. Using a cheap chinese pump in a cistern is probably worth the risk, since it’s easy to replace. I wouldn’t want to be the fool that has to pull it up out of the well often to replace it. Pumps rarely go out when it’s 75 and sunny.

Those pumps are rated with Chinese math having high HP per amp draw and will work with smaller than normal wire sizes. This is a temporary pump used to clean well for 2-6 months and will be cannon fodder afterwards.

 

[FredG]

Those pumps are rated with Chinese math having high HP per amp draw and will work with smaller than normal wire sizes. This is a temporary pump used to clean well for 2-6 months and will be cannon fodder afterwards.

In my experience, “temporary” is code for I’m too cheap to pay for a good pump. Nobody in their right mind is going through the work of pulling, and replacing a pump just because, if it still functions.

 

[RetiredInGueydan]

In my experience, “temporary” is code for I’m too cheap to pay for a good pump. Nobody in their right mind is going through the work of pulling, and replacing a pump just because, if it still functions.

This will run for 2-6 months, during which time I will test my water for grit and set up my solar situation. My plan is to put in a Grundfod 11-sqf-2 Helical rotor pump in the spring, assuming the grit level ain't too bad.

Take some time and read before you spread your wisdom.

 

[FredG]

This will run for 2-6 months, during which time I will test my water for grit and set up my solar situation. My plan is to put in a Grundfod 11-sqf-2 Helical rotor pump in the spring, assuming the grit level ain't too bad.

Take some time and read before you spread your wisdom.

I read that, and stand by my statement. Is doing the job twice the new wisdom? Wouldn’t surprise me.

 

[Reach4]

I read that, and stand by my statement. Is doing the job twice the new wisdom? Wouldn’t surprise me.

Pulling a pump hanging on 1-inch poly hanging from a pitless may not be as hard for jjmc95 as you think. He may want to fabricate a giant pulley made from an old tractor drive wheel etc. Another alternative is to use two smaller wheels as pulleys, rather than making a 90 degree turn on one pulley.

However two strong people may be able to lift things hand over hand, especially if there is something to hold the pipe to rest. https://deanbennettsupply.com/INSTALLATION-TOOLS?parentCatID=11505&subCatID=11759 Maybe one strong puller, and another person to assist with the clamp etc.

It is also possible to use a pump puller, such as up-z-dazy OR "pul-a-pump" OR PumpTrax OR "Easy Riser". I think one might be available at a rental place, but that would be rare. https://www.rentalsunlimited.com/rental-equipment/well-pump-puller-electric/ has a listing but not a location.

That contemplated Grundfos 11-sqf-2 is very expensive.

11 SQF-2

Renewable energy submersible pumps with built in inverter for solar, wind and AC powersource. Runs on both AC and DC voltage.

product-selection.grundfos.com

 

[jjmc95]

Thanks all!

Yes I’m not thrilled about having to pull this pump so soon after putting it in but I decided it was worth not pulling the grundfos after it broke from too much grit . Grit is an issue for the helical rotor pumps which I really want to use for my solar set up given their performance in low sunlight conditions . Indeed those grundfos are expensive !! 30x more expensive lol

The wire I planned to run for grundfos is same
Two wire 10 gauge as I plan to run for the Chinese pump .