Pump RPM's

<FONT COLOR="e87400">Does anyone know what the outcome is if a pressure pump is over revved? I am putting together a new rig with 2021 pumps and while I was calculation the RPM's this question just sorta hit me. The GP 2021 pump is rated 3500psi & 5.6gpm at 1450 rpm. What would happen if the pump was over revved to say,, 2800rpm would it scatter or just dump into bypass?? I haven't a clue! Reason I am wondering is that I am putting the pump on a stronger than usual motor and have a concern that one day it could accidently be throttled higher than it should be.

Thanks
Cody</FONT c>

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Hydro-Emulsification Surface Preparation Specialist </FONT c>

The pump has a maximum rating for a reason.
But, if you look at the pump breakdowns you will see that some of the higher RPM pumps have the same parts as the lower RPM pumps. This means in theroy you could run the slower pumps at the higher RPM without a problem. The only thing is you will boost your pressure and RPM higher than the specs call for and may dammage the pump head, packings, valves, and plungers. The pump may get hotter than normal and sieze up! I have seen that pump run at 1750 RPM without a major problem. The unloader however did not fair so well. It exploded and then the pump head shot across the room.This means you need a good unloader that can handel the higher pressure, say 5800 psi.

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