The Lavac has never become very popular in the US among
"weekend warriors" for two reasons: very limited parts availability and
price--$350-$400 depending on the rate of exchange...

Got mine at a boat jumble in Netherlands for 10 euros - but I have
changed the seals. On my vessel suction pipe takes water from a small
domestic cistern fed from the cold water. Also have two Lavac pinhole
valves to fit to suction line, but have not yet got round to fitting
them.