[RE-wrenches] Off-grid deep well pumps

[Ray Walters]

I think you've started a good rundown of the three pump lines, I believe 
they all use the same basic multistage pump head.  The SQ line has just 
a simple AC motor; no constant pressure, and the usual starting surge 
associated with regular AC submersibles.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 4/10/2015 11:25 AM, Howie Michaelson wrote:
> Thanks everyone for the feedback - as always the best source of hands on
> info anywhere!
>
> So as I understand it, the 2 basic choices are the SQ,SQE line or the
> SQFlex line.
> Advantages of the SQE are:
> * cheaper
> * Constant pressure
> Advantages of the SQFlex are:
> * More efficient (how much?)
> * Can run on AC or DC
>
> Both are soft start, and both can run without the controller.  No
> controller looses the display readout and a couple other smaller bells and
> whistles, but otherwise no operational change.  I haven't be able to
> determine the difference between the SQ & SQE lines.  Are there any
> durability differences between the SQ, SQE, and SQF lines?
>
> Howie