Good call BUT, I used one with its pkastic resevoir for a couple of years before the peristaltic tube gave up as it was impregnated with small shards of metal. Replaced the tube and again it failed a year or two later. By the way, you have to do a bit of re-wiring of the float switches, but its not difficult.
You do need a realy good filter before the return pipe from the lathe / mill etc.
I now use a small indoor pond pump – but it doesn't have much of a head.
On the single phase lathe, I have a 3 phase dual voltage suds pump, running on 240v single phase. Connect live and neutral on two of the terminals, and a capacitor across the other two. Ok you loose 60% of the power, but there is heaps left for the pump.