good morning all, back to work i am, i need advice please as to what size 12 volt pump i need for soft washing, i have just completed couple factory units via soft washing, but was using 240 volt pump, this was my first works soft washing, but i would like to set up[ a 12 volt system, but need a pump system that has the pressure to reach heights of 15mtrs and above and not loose its supply pressure,, thankyou for your time.