Hope you good Guys…
Please help me out here…I’ve just bought 4GPM, 4200PSI Simpson Machine with a CAT Pump.
Today i did a Water Flow Rate test…testing my supplier to the Machine…& here’s what i got:
3.43 Gallons (13 Liters)
instead of 4 Gallons (15.14 Liters)
…& my question is, wouldn’t this difference damage my Pump. Thank You.
It is physically impossible to get 4/4200 from that engine. You can get either or, or since combo of the partial two. Also, if you are feeding from a garden hose, What’s the flow from the garden hose.
This sounds weird, but…
When I first started out I had a similar machine. One of my (then) friends had an old farmhouse and the one spigot coming straight up from the yard only flowed 2.5gpm. I didn’t know this and my machine kept cavitating, so what I had to do was let off the trigger and the pressure in the 100’ garden hose would build up enough to hit the trigger for about 20 seconds.
I’m not saying do this, but with proper 2500psi nozzles on the surface cleaner you should be fine at 3.8gpm from the supply hose. There’s some flow loss after all that distance. Just feel for a weird vibration in your trigger gun.
Basically I’m getting this 3.43GPM from garden hose that feeds pump inlet
My worry is…as the pumo produces 4GPM on its output while there is 3.43GPM in pump’s inlet…Won’t that damage pump.?
Potentially, yes. That’s why we use plumbed unloaders and buffer tanks. Imagine us trying to direct feed our 8gpm units with an inlet of only 4gpm.
That’s roughly 3.5gpm in garden hose feeling pump inlet…then you mean this (.5) could make the Machine shack because of not getting enough water.?
Yea i see this example you’r making [4gpm as feeder to 8gpm machine]…I think there’s a huge diff. in there…“but yes i understand just an example”
either way, the pump runs out of water…
That’s roughly 3.5gpm in garden hose feeding pump inlet…of which thats what was testing" I monitored the rate on the inlet side"I got 3.43gpm from garden hose to feed pump inlet…then you mean this (.5) could make the Machine shack because of not getting enough water since it is a 4gpm.?
…or it only give out 4gpm @4200psi…of which i wont even get closer to that…?
