This is the new Jabsco V-Flo 12v DC automatic variable speed drive pump that supplies between 3 and 19 L/min at a constant 280 kPa or 40 psi. Self priming to 3m max, 4 chamber positive displacement with an operating pressure of 40 psi. Includes plug-in strainer and snap-in port fittings. Click here for the pdf spec sheet. Perfect for supplying water at an excellent pressure in a weekender, houseboat, small home or even the old sheering shed. We can even couple this pump to a solar panel and battery system for remote use. Includes 2 x 1/2" male threaded connectors, 1 x 1/2" barbed elbow, 1 x 3/4" barbed elbow and 1 x 1/2" threaded elbow as standard connectors. This unit weighs 4.1 kg
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Ok so I've had the pump in constant use at my barn for 3 over months and it's going pretty well. The only glitch I've experienced so far is that it gets a bit flaky (starts burbling quietly to itself and not fully shutting off) and sometimes shuts itself down if the voltage produced by my solar system drops below 12.2 volts due to several days of heavy winter cloud (voltage at the pump would be lower than 12v by then). This will be solved when I upgrade to a bigger battery. I'm guessing this is because the electronics don't like the low voltage and the shut down is to protect itself. So your 12v system needs to be up to scratch to run one of these. Otherwise the pump handles multiple outlets and flow rates, including float valves very well. It also draws substantially less current, even it seems at maximum flow, than non-variable pumps. I know this because I can have my kettle on and be using the pump without the 20A main fuse in my solar system blowing which I couldn't do before.
Pump arrived quickly and was very easy to install due to the push in connectors. I like how it relieves the pressure in the pipes (and presumably on itself) when all the outlets are closed. I plan not to switch it off so it is always on standby (which you can't get away with with the cheaper pumps). I am using the pump to supply water to my remote solar powered (12v) horse barn. The big test for me will be whether the pump's cleverness translates into sufficient longevity and reliability to justify its relatively high purchase price.