Geoff Schultz wrote:

The manufacture's publications make you believe that their systems have
become more efficient through their pump and motor technology. Is there
really that much difference in technology? Some vendors claim to have an
energy recovery system, but I don't understand what this is or how it
works. It certainly doesn't seem to apply to basic systems that I'm
looking at.

Any insights into this?

-- Geoff

Spectra, Livol, and HRO Seafari "Escape" all use some form
of a similar looking pump that recovers some the energy in
the waste brine. Spectra uses one called the "Clark" pump -
a cutout drawing is on their website. In principle it's
simple; I'm sure the details of making it all work are a bit
more complex.

Spectra Ventura 150 gives 6.3 GPH @ 9 Amps. Catalina 300
produces 12.5 GPH @ 15 Amps.

The Livol D30C-12 produces 30 L/hr (7.9 GPH) @ 8.5 Amps.

The HRO 200 produces 8.3 GPH/13 Amps, clearly the worst
performer of this bunch.

Evan Gatehouse