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+--- Thread: Need recommendations on a water pump (/showthread.php?tid=17815)
RE: Need recommendations on a water pump - Leliu5th - 12-11-2016
Has anyone checked into a solar submersible 12v water pump? Voltage is 12V DC with a 3-chamber positive displacement diaphragm pump, Flow rate is 1.6 gpm. It has a 1/2" barbed fitting, Max amps 8A@12v, MAX lift 230ft, MAX Submersion depth 100ft. 9ft power cord. I saw some on Ebay for under $100 I am newbie at this stuff. I plan on building a small off grid cabin about 600sqft and I have been getting information from this site. I need all the help I can get. I am only one person doing this so I want to do it right. I am trying to get the cost of the important things estimated so I can budget. Like the septic, water catchment and building codes. I really do not want my place being mowed down by anyone who is jealous or just being a nosy body to ruin my dream. Sorry about the lengthy reply.
RE: Need recommendations on a water pump - MarkP - 12-11-2016
Do you need that much lift? That pump sounds like a well pump. The pump I selected is rated at half that lift and twice that flow and it works great for pumping water from my tank to my house. I spent big bucks and got a dedicated 48 volt DC vane style pump. I don't know what would happen if I dead-headed it but it hardly slows down under the normal range of pressure that it sees in normal use. The old 12 volt dual diaphragm pump system that I had would vary all over the place.
What will your power situation be? On or off grid? What voltage battery bank?
RE: Need recommendations on a water pump - terracore - 12-11-2016
Looks interesting Leliu, can you post link to product?
RE: Need recommendations on a water pump - Leliu5th - 12-13-2016
12v Submersible Deep Dc Solar Well Water Solar/Battery/Alternate Energy Pump on Ebay
quote:
Originally posted by terracore
Looks interesting Leliu, can you post link to product?
Dreams are not what you see in your sleep, they are the very thing which does not let you sleep.
RE: Need recommendations on a water pump - Leliu5th - 12-13-2016
If your addressing me No I do not need that much lift, they are stating that is MAX lift. This pump is a Solar pump and is submersible. My power situation off grid has not been estimated yet. It is only me and I am low consumption person. Harbor Freight has very inexpensive Solar Panel units with good feedback rating and testing was done on Youtube live. I will get (2) Units, they have 3 panels each. I have my information saved in my notes I will have to go back to get it, sorry I am just an older lady trying to get organized before I do any purchasing.
quote:
Originally posted by MarkP
Do you need that much lift? That pump sounds like a well pump. The pump I selected is rated at half that lift and twice that flow and it works great for pumping water from my tank to my house. I spent big bucks and got a dedicated 48 volt DC vane style pump. I don't know what would happen if I dead-headed it but it hardly slows down under the normal range of pressure that it sees in normal use. The old 12 volt dual diaphragm pump system that I had would vary all over the place.
What will your power situation be? On or off grid? What voltage battery bank?
Dreams are not what you see in your sleep, they are the very thing which does not let you sleep.
RE: Need recommendations on a water pump - kalakoa - 12-13-2016
Harbor Freight has very inexpensive Solar Panel units
They're only inexpensive until shipping costs are added; panels can be had for $1/W locally.
RE: Need recommendations on a water pump - MarkP - 12-13-2016
I checked ebay out and that pump does appear to be a well pump. There is nothing wrong with that but wells are often deep enough that their pumping solutions are on the high lift/low flow end of the spectrum. Pumping water from a tank at ground level for your shower is more in the middle of the range. I used this ShurFlo pump before I upgraded:
https://www.amazon.com/SHURflo-4008-101-E65-Revolution-Water-Pump/dp/B002XM5G70
One thing to remember is that while it says 3.0 gpm and 55 psi on the box that really means 3.0 gpm at a very low pressure and 55 psi at a very low flow. You DO NOT GET 3 gpm at 55 psi. Therefor I think you will be disappointed when you try to take a shower with this supposedly 1.6 gpm pump as it will put out less than 1.6 gpm under most conditions. As for using a submersible pump in a catchment tank, many people do. I considered doing so myself.
RE: Need recommendations on a water pump - Leliu5th - 12-14-2016
Mahalo for the info!
quote:
Originally posted by kalakoa
Harbor Freight has very inexpensive Solar Panel units
They're only inexpensive until shipping costs are added; panels can be had for $1/W locally.
Dreams are not what you see in your sleep, they are the very thing which does not let you sleep.
RE: Need recommendations on a water pump - pandp - 03-13-2017
Thanks to Hunt and MarkP. I listened and learned! A larger tank was a better solution in the end. More cost effective and ends the cycling. I really should have thought of that myself but just another example of concocting a scenario and trying to make the parts/reasons/bull headedness fit! Mahalo.
P.S. When the flo jet kicks the bucket I'll prob switch over to grundfos/pressure tank configuration as the setups ive seen so far come well recommended.
Remember...Aloha!
RE: Need recommendations on a water pump - Susan - 04-02-2017
Would a 44 gallon pressure tank be considered large enough or would the 86 gallon be better?