Posted by Don in NH [216.107.193.154] on Thursday, August 27, 2015 at 10:19:53 :
In Reply to: Re: PS Pump - "Controlled flow" versus "Pump capa posted by Desoto61 [138.162.0.42] on Thursday, August 27, 2015 at 09:09:28 :
I've been looking at the docs again, and I think that it may mean that it was able to deliver a constant usable 1.5gpm within a certain RPM range (1200RPM - ??? RPM), where the extra flow above 1.5gpm is returned to the tank. The "controlled flow 7.5GPM" means that I can go like 5X above the 1200RPM and not have any change of flow.
Other pumps have lower "controlled flow" values, meaning a tighter RPM range for a rated flow?
Maybe I'll email Eaton/Vickers and ask this question.
Thanks.
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