My 25' CK230 torch flows 1 liter per minute at 25 psi water input. That is my home water pressure. Measured by wristwatch and mason jar method. This is the flow rate they call for.TA Arcmaster 300CM3XMT 304S22P12 suitcase feederX-Treme 12VSOptima pulserTA161SMaxstar 150STLHypertherm PM45OP setupStihl 020AVP, 039, 066 Magnum