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Old 01-09-2013, 03:12 PM   #1
Oct 2012
Posts: 171
Liked 39 Times on 26 Posts

I know non-self priming pumps can have flow controlled by a ball valve on the outflow, but what's the best way to control flow on a self priming pump. Any recommendations on affordable options would be helpful. It will only be for pumping room temp or colder water at 6-8 GPM.

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Old 01-09-2013, 03:47 PM   #2
May 2011
Stow, MA
Posts: 19,295
Liked 3478 Times on 2590 Posts

Motor speed control. Whether that's "affordable" depends in part on the pump motor requirements...


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Old 01-11-2013, 02:57 PM   #3
WalterAtMarchPump's Avatar
Dec 2010
Glenview, IL
Posts: 711
Liked 53 Times on 41 Posts

Depends on the type of pump.......If its a mag-drive you can still just choke an output valve to what ever you want it to do. Or you could get fancy with a re-circ loop and extra valves.....basicly take the output of the pump, install a "T" fitting with a valve on each going to your end point...the other looping back into the inlet of the pump. You can play with the valves to get what ever result you want. On startup when the pump is priming itself, the loop valve would of course be closed. The rest of the time when you want to controll the flow you can open the loop valve more to get less flow....and you can close both more to get more pressure...

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