Pump & Well system

[laen64]

I've decided on a 2.5 hp 4" Cycle stop valve system with a 47 gal tank.

What are your thoughts guys?


I'm supporting a 5-6 Br home with 4 people normal laundry and a sprinkler system with up to 5 zones.

Thanks in advance
L.N

 

[KennyV]

2.5 HP is a lot of motor, your water must be VERY deep.
In any case with a sprinkler system you will want to place enough heads per zone to keep the pump continuously running. You do not want a water flow so slight that it keeps cycling your pump off and on. KennyV

 

[Kays Supply]

Using it for house and irrigation is going to be tricky if the well isn't very very, deep with that HP. Taking a single shower with a water saver shower head will make that thing rock and roll. A pressure regulator fine tuned might help.

 

[WayneB]

Does seem like a bunch of hp. I have a 1 hp jet pump with a 11/4" feed line and I am getting 70 psi in the house.

Actually, I was worried that I had it set too high, but been running it that way for about ten months with no failures.

 

[laen64]

Wow! How could I best design this system and make it cost effective?

Thanks

 

[petegoud]

How deep is your well?
What is your desired PSI & GPM?
Without this information we don't have much to base any advice. At this time I will only say that the more/bigger storage tanks, the better. Anytime you can keep the well pump from constantly turning on and off, the longer it should last. It takes more power, and places more stress on the motor if it is starting and stopping all the time verses starting and running for several minutes while it refills larger tanks.
Another way of looking at this is how long would the starter on your tractor last if you shut it down , then restarted it every time you loaded the bucket.

 

[The Dougster]

Yup, you size the pump to the wells capability in gallons per minute... didn't the well contractor give you his estimate of the wells production capability?

 

[petegoud]

What The Dougster said is very important also. If you run away from your supply you'll start to cavitate the pump resulting in worn impellers, etc. Another good way to shorten its life. Whoever drilled the well should have flow rates for the that well. Doug

 

[westcliffe01]

If you get one of these 3 hp Flint and Walling 4" Submersible Water Well Pumps (3 phase pump)

and you get one of these

http://www.driveswarehouse.com/Driv....html?osCsid=938fb5ae31b035c0afe13523c7048340 (single phase to 3 phase variable frequency drive)

You will have a pretty neat system. The VFD can be setup to gently ramp up the speed on the pump, and ramp it down, which may be important if your supply is marginal or running on emergency power. The pump will last longer and the operating frequency can be shifted to take into acount changes in the wells delivery (lower frequency if delivery is low and higher if the well can keep up and you need more water faster).

Basically the VFD makes for a very smooth flexible to operate system and it is cheap today.

 

[Kays Supply]

That variable speed pump is something that has come along since I worked on pumps. It is like the variable speed HVAC systems. They are great. It would be a great system. I would be very interested in what you consider "cheap". I still do sewage pump work, the last large system I installed , the control box cost more than the pump.

 

[laen64]

Well the well is beeing dug as we speak the parameters that I stated is the intended set up. I"m asking questions now so as to head off any problems. I know what I need to supply water too, however I don't know what my water supply is so I needed the info in order to drill the well and perspective pump to water the large yard and supply water to the home I have in mind (plans to build).
Let me know if I have put the horse in front of the cart or vise versa?

Love You all

HOOAH!

 

[westcliffe01]

The drive is $350. 3HP tends to be the upper limit on single phase in - 3 phase out. One will still need a pressure switch, but the contacts would not have to be rated for the main current. The "on/off" signal is routed to the input circuit of the drive and it handles all of the turning on and off.

Starting bigger single phase motors, particularly under load (like AC or well pump) tends to make the house lights dim and can re-set some sensitive devices. And when running on emergency power, these tend to dictate the size of source required. With 3 phase motors and a drive, you may be able to lower the size of a generator by 50% and still start the load.

 

[laen64]

OK just recieved call from well installer: results; 23gpm 60PSI cycle stop valve with 1.5hp pump. should have been 2hp we will work that issue. the 2hp should provide 30gpm with the cycle stop remaining @ 60psi
please give any and all comments.

 

[The Dougster]

Atta boy... listen to your drilling contractor.. these fellows are usually dirty and greasy but that's due to the type of work they do.. it is not in their best interest to deceive anyone... They have a lot of experience and I advise everyone to listen to them.

 

[CrownHawg]

1.5HP is still a hoss of a pump. Unless you are lifting several HUNDRED feet, that pump should be fine. 23GPM is ALOT of water! At that rate, you could fill a 5 gallon bucket in about hmmmmm, 10 SECONDS!! Just remember, the bigger the pump, the more electricity it uses. I have a 3/4 hp sub pump that pumps from about 80 ft at pretty close to your rate. By the time you try to shove 23GPM through a 1" service you will be close to 100PSI, which will give you some real problems later. Just my thoughts, I could be wrong.....

 

[Deerlope]

The depth that the water will be pumped from is what the standing level in the well is. If the well is 100 feet deep and the standing level is 20 feet, then its are only pumping 20 feet vertical.

 

[dodge man]

I agree you don't want to big of a pump. You also don't want to big of a storage tank, unless you have a way to add chlorine. To big of a tank and the water can get stale. I believe you want to shoot for a 50-50 type situation. If you are using a lot of water, you want the pump running about half the time and off half the time.

 

[laen64]

Guys I truly appreciate you all as usual. I have a complete system 2 HP, 30gpm, 100' waterlevel 30' (great producer) I should be able to add any sprinkler system me and the boss can come up with.

God Bless U all!
Keep on sharing life's experiences.

 

[J_J]

Did you leave out a 0 behind the 3 GPM. A 2 HP pump , pumping from 30 feet, should be a good bit better.


6 sprinkler heads at 3 GPM will take 18 GPM. When using the pump for a sprinkler system , you want the pump to run the whole time the sprinkler system is on.

 

[laen64]

Thanks J.J 30 gpm... I have the pumprunning continuous via the cycle stop valve. this is all at 60PSI.