Help on Submersible Pump...

**bongliza** · June 20th, 2018 10:25 PM

mga sirs, we are planning to buy a submersible pump for our deep well. depth is about 25meters, water level is about 15-20 during summer, tank level from well is about 8meters (mas mababa po ung well sa bahay namin), distance from well to the tank is approx. 30meters. 6-10 pers in the house.

please i need your advise on:
1. pump size in HP
2. anong brand po maganda? max budget is P15K
3. what else do we need?

thanks po sa advise.

**minicarph** · June 20th, 2018 10:35 PM

alam ko bawal na deep well kahit san sa metro ah

**bongliza** · June 20th, 2018 10:40 PM

Originally Posted by minicarph

alam ko bawal na deep well kahit san sa metro ah

sa probinsya po sir yung deep well

**Archerfish** · June 21st, 2018 01:06 AM

You need an expert for this. Aside from the required flow rate that you didn't mention, it is necessary that he should see the site. He needs to estimate the number of bends including the total height that the water will travel to compute for frictional losses as to get the total dynamic head.

In other words, you cannot simply ask how much horsepower you need to pump water at a certain height. There is no direct answer for this. It all depends on your requirement, i.e., the number of people who will use it, the amount of water that you will need in an hour or in a day.

As I'm not an expert, someone might give you an answer if there exist a rule of thumb for every "X" meters per HP.

**dr. d** · June 21st, 2018 01:15 AM

Originally Posted by bongliza

mga sirs, we are planning to buy a submersible pump for our deep well. depth is about 25meters, water level is about 15-20 during summer, tank level from well is about 8meters (mas mababa po ung well sa bahay namin), distance from well to the tank is approx. 30meters. 6-10 pers in the house.

please i need your advise on:
1. pump size in HP
2. anong brand po maganda? max budget is P15K
3. what else do we need?

thanks po sa advise.

errr... why submersible pump, sir?
why not an easier-to-service, above-ground pump, i.e., jet pump?

**DiliKoAmericano** · June 21st, 2018 09:33 AM

submersible runs cooler, and there is never a requirement for a foot valve for priming. If you can afford it, submersible is the way forward.
I dont think running pressure from a submersible or mass water transfer pump of any type is an economical way to go, as you then need to just increase power to overcome the need for pressure. which is stupid.
Personally, i use a 100 watt solar panel charging a lead acid battery powering a 12v 36 watt constant pressure pump, which i literally just pull the water out of the well with. (about 10 m deep, and i get flow of about 8 LPM)
A constant pressure pump from your tank to the house would be the best solution if you need multiple faucets and toilet cistern etc, and for this you could get away with any power constant pressure pump.
You then just need to be able to get the water to the tank, not under pressure, just get it there.

Read this document:
https://www.ihs.gov/EHSCT/documents/...cises%20r1.pdf

Lift: Submersible pumps do not build pressure. They provide lift which overcomes head pressure.

Personally, i think a half a horsepower, or somewhere below 400 kw would get the water to the surface fast enough where it can be pressure pumped to the house with a separate pressure pump.

**DiliKoAmericano** · June 21st, 2018 09:38 AM

37W 5m Water Pump Submersible Water Pump Deep Well Caliber .4'' 22V 1m3/h - intl | Lazada PH

370 watts would do it, well under budget.
Use the remained of the budget to get a constant pressure pump, with adjustable built in pressure switch.

**bongliza** · June 21st, 2018 03:37 PM

Originally Posted by dr. d

errr... why submersible pump, sir?
why not an easier-to-service, above-ground pump, i.e., jet pump?

we had the jet pump before doc, laging nasisira. so I want to try the submerged type. maiba naman.

**bongliza** · June 21st, 2018 03:41 PM

Originally Posted by DiliKoAmericano

37W 5m Water Pump Submersible Water Pump Deep Well Caliber .4'' 22V 1m3/h - intl | Lazada PH

370 watts would do it, well under budget.
Use the remained of the budget to get a constant pressure pump, with adjustable built in pressure switch.

thanks sir, what is "constant pressure pump"?

**mokong22** · June 21st, 2018 05:24 PM

Originally Posted by bongliza

we had the jet pump before doc, laging nasisira. so I want to try the submerged type. maiba naman.

Ang hanap mo ba yung naka submerge sa water na pump? May jet matic na pang deep well talaga, yun yung naka vertical sya pag kinabit design for deep well talaga sya sa top sya nilalagay hindi sya naka submerge sa water, mas mahal lang sya sa ordinary na pang jet pump, yung ordinary type yun yung naka horizontal, dami china made pero ok naman tumatagal din.

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