Nice thinking outside the box ...
can you get the pressure lower than 500
was the zeta the lowest priced diesel heat exchanger washer you came across ...
colin day ... Little giant ?
wondered why they are not used more over here ... is bottled propane expensive here compared to the states perhaps ?
You can lower the pressure as low as 250 psi, really depends on what jets you have on your wand, the zeta is really nice because its compact and it can run on diesel, bio diesel, heating oil.
i run two extension leads:
The first runs vacs 1 and 2
the second runs the zeta and vac 3
Plus... it costs about £1000, now thats a grand for a really good pump which will out perform and last longer than most pumps in a portable, and you get a very efficient heat exchanger.
Plus... you can use it for washing your van... steam cleaning engines... hard surface cleaning... its pretty versatile!
I have now included some pics just to show how i have installed the machines into my van, its a project which is no way finished but it works...