In our setup, we are running a 35 gallon buffer tank to a suction hose that goes straight into pressure washer.
Everything I’ve read has said that direct drive shouldn’t be able to pull water, and needs to be fed, but the pump is directly pulling from the tank and seems to be at full GPM. I’ve triple checked the manual and it is a direct drive pump (it is a predator 4400 PSI 4.2 GPM system from harbor freight).
Is there a reason this might be working well for us? Has anyone else had this experience with the predator series?
I’ve seen countless posts about not being able to pull from buffer tank with only a direct drive because it spins too fast, and I want to make sure everything is up to standard. We are not opposed to switching to a belt driven pump, but will avoid it if it’s unnecessary.
I had a Honda/Cat direct drive setup for a year and attempted to draw from my 35gal leg tank.
While it did draw, it started making disturbing noises and I decided it was time to get a better machine. I think the pump spins too fast causing it to slightly cavitate which is not good for the pistons.