Ran on a 1500 watt steam cleaner. When the steam cleaner has time to build up it gets to only 5 psig going into the turbine, and quikly drops to just a few psi. This turbine is going 4100 rpm on just a few psig. I built another model with a 2nd bearing and it gets to 6000 rpm because the shaft is very steady. If I put a load on it the rpm will drop, and the feed psi will probably increase.