Need information on "dialing down" a Sequence pump

[Blorton]

Gang,

Can someone please clarify this for me? I'm considering a Dart for a flow application and need a max flow of 2600gph at 0'. Do the Sequence pumps carry some sort of onboard means of dialing the motor speed down, or will I have to resort to a gate valve on the output? I see that with less head pressure/higher flow, the pump uses a lot less power.

Maybe I could get a euro power adapter and run the thing at 50Hz. A 20% drop in feed frequency would drop the starting point down a good bit and save lots of power too.

Anyone know? Any other suggestions on an affordable flow pump with low power draw and noise emissions in this flow range? While I'm shooting for 2600gph, anything down to 2000gph would work, as long as it can support more head pressure at those lower flow rates.

Thanks,
Dan

[motorslave]

When you plumb the pump into the system, just install a valve on the outlet side of the pump. Thats all you have to do! Just make sure its on the outlet side and not the intake side. The intake needs to be wide open, restrickting this will shorten the life of the pump. Restrickting the out side of the pump wont hurt it a bit!

Robert

[Blorton]

Thanks, Robert. I know I can do that - I'm looking for a more energy conserving approach, since increasing head pressure on these to drop the flow rate makes the power usage climb.

Thanks,
Dan