HI Michael, Here is another option vs the shurflo.
I had someone buy this and so far its working well. 6 months now. The shruflo is about $700, this one is $69. https://www.ebay.com/itm/12V-Submersible-Deep-Solar-Well-Alternative-Solar-Battery-Water-Pump-Powerful/401447293005?hash=item5d781f904d:rk:16:pf:0 Its a direct copy/knockoff of the shurflo. jay > On Jan 8, 2019, at 1:25 PM, Michael Welch <michael.we...@re-wrenches.org> > wrote: > > Hi Bill and all. Windy was having troubles getting this to post, so he asked > that I post it on his behalf: > > Bill, > > I agree, mostly, with Jay. The Shurflo may last 1-3 years and it is difficult > and expensive to rebuild. It's a diaphragm pump like an RV pump and has a > brush motor. When the diaphragm wears or breaks, it instantly floods the > motor. It's 1980's technology. But it is efficient for low-flow rates. > > The Hober items that I see listed on their Alibaba site are "solar pump > inverters" designed to power conventional 3-phase AC pumps. Jay explains, > but I will cut to the chase > You will need many more PV watts than you > should need, and it will pump MUCH more water than you are calling for. The > pump cannot be slowed down to match your needs because that would kill its > lift capacity. That is the essential nature of conventional centrifugal pumps. > > You should look for a helical rotor (HR) submersible, also called a screw > pump. It is not a centrifugal pump. It is positive displacement, like the > Shurflo, and will have similar efficiency, excellent for low volume high > lift. HOWEVER, it is brushless and long lasting. Instead of a vibrating > diaphragm, it has a metal helical rotor, just one moving part. > > Lorentz and Grundfos SQ-Flex are the original successful HR submersibles, but > oversized and expensive for the low volume that you require. > > There are several Chinese companies making HR submersible solar pumps that > are smaller, and cheap. Some of them are very good. SunRotor in USA sells > good ones and stands by them.* > > Windy > Dankoff Solar Pumps (retired) > Co-Author Solar Water Pumping (for publication 2019) > > * My old motto: > I stand behind my product. If I stand in front of it, it doesnât work. > > William Dorsett wrote at 04:44 PM 1/2/2019: > >> Happy New Year Wrenches From a young lady who is trying to bring clean water >> to a village in Uganda: >> >> This is Rosanna Bauman from Garnett. I'd talked to you about 2 >> years ago about solar pumps for our friends in Uganda. We installed the >> solar panels but are just now getting the money saved up for the >> well-drilling. We have clean water located 75 meteers below, no rock. >> Looking at a Shur-flo or a Hober. We can get the Hober shipped direct from >> China to Uganda DHL, plus it's about $200 less. However, we would like some >> advice as to their reliability. We want something reliable. >> >> Have any of your Solar Wrenches used or heard of this company? Looking at >> using a 3000 liter/day pump to pump 1,000 liters, since it will be directly >> tied to solar power, no battery back-ups. >> >> You're welcome to call me if you have questions! >> >> Thanks! >> >> Rosanna Bauman >> >> Thanks for your thoughts >> >> Bill Dorsett >> >> Start where you are. Use what you have. Do what you can Arthur Ashe >> >> 1715 Leavenworth >> >> Manhattan, KS 66502 >> >> www.fhreec.org <http://www.fhreec.org/> >> >> 785/539-1956 Office >> >> 785/564-2583 Cell >> >> wmdors...@cox.net <mailto:wmdors...@cox.net> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> <http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html> >> >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> <http://www.members.re-wrenches.org/>_______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
_______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
