impellar pumps

[jmvotto]

Are impeller pumps strong enough to fill/drain through 1180 in the ski locker to two 250 lb bags in the bow teed off and vented with a CV?

creating my black Friday shopping list

[MLA]

It will, but it will slow due to the head pressure.

[bergermaister]

I'm so tempted, but not even gonna touch that one...

[gregski]

It will, but it will slow due to the head pressure.

I respectfully disagree. The pump performance will only decrease about 1% due to the head pressure. The Johnson spec is 822 gph @ 0 psi and 810 gph @ 1.4 psi which is 3'3" http://www.pumpvendor.com/media/john...690_series.pdf User tests confirm that these pumps are not greatly affected by head pressure. Of course, aerator pump performance would be greatly reduced due to the head pressure.

[jmvotto]

I'm so tempted, but not even gonna touch that one...

Berg, you make me laugh. it usually speeds up due to pressure

[jmvotto]

I respectfully disagree. The pump performance will only decrease about 1% due to the head pressure. The Johnson spec is 822 gph @ 0 psi and 810 gph @ 1.4 psi which is 3'3" http://www.pumpvendor.com/media/john...690_series.pdf User tests confirm that these pumps are not greatly affected by head pressure. Of course, aerator pump performance would be greatly reduced due to the head pressure.

thank you, I was thinking would just be additional fill time for the extra 500 lbs.

[parrothd]

That's close to my setup, center bag fills the IBS, the vent is connected to the IBS with a 1 way valve...

[moombadaze]

thank you, I was thinking would just be additional fill time for the extra 500 lbs.

figure a xtra 5 minutes to fill the xtra 500lbs

[jmvotto]

Plenty of time at the end if the dock to fill the cooler with beer...

[MLA]

I respectfully disagree. The pump performance will only decrease about 1% due to the head pressure. The Johnson spec is 822 gph @ 0 psi and 810 gph @ 1.4 psi which is 3'3" http://www.pumpvendor.com/media/john...690_series.pdf User tests confirm that these pumps are not greatly affected by head pressure. Of course, aerator pump performance would be greatly reduced due to the head pressure.

An Impeller pump will absolutely be effected. Im not talking about a 3ft lift from the sac to the pump, but talking about pushing through the bottom port of a sac with 1K+ water in it, forcing the over flow into another sac thats located a few feet away and on a higher plane. This is based on actual experience, not printed specs. As stated, yes, it will work, but it will slow greatly, once the belly sac is filled. So if a 3'3" 1" OD hose creates 1.4 PSI, what would a 141 gallon sac build?