I bought a 12 volt brew pump a year ago and haven't really had a chance to use it much. I bought a plate chiller at the same time, and then realized that the plate chiller worked fine with just gravity feed.
Now that I have the FastFerment conical, it stands too tall for gravity to work, so I needed to get the pump running. I brew on my patio, and chill in the kitchen so I needed something that was portable and easy to move. I got some help from JamesC to solder together a recirculation arm to allow me to run boiling wort through the pump and chiller during the boil to sanitize.
For the unit, I bought a $10 tool box at CT and used a handful of fittings to rig it up. The threads on this pump are not NPT so it required some jimmy-rigging. I drilled 4 holes in the back of the box and used zip ties to attach my chiller to the toolbox. Worried about the heat melting the plastic, I used some reflectix shielding that I had left over to protect the box.
Used this last night and it worked like a charm! Water was coming out of the tap at 51f. I recirculated the wort through the chiller and back into the kettle for about 5 mins and got it down to about 120f. Then I did a final pass through the chiller into the fermenter. In 10 mins I had the wort down to 62f and into the fermenter.
This will take longer in the summer with warmer ground water, but I'm quite happy with this after one run.