Which Return Pump for basement sump?

[lastlight]

Originally Posted by sphelps

still working on a way to measure what I'm getting cause I am curious.

I think GHL came out with sensors but if I'm remembering right they only went to 2000gph.

[sphelps]

Originally Posted by lastlight

I think GHL came out with sensors but if I'm remembering right they only went to 2000gph.

Yeah not much good for me really. Typically you can get good estimate on the flow rate buy timing how long it takes your sump to catch up after a shut down provided you know the volume of back flow but these pumps ramp up slowly. Another option is to drain your overflow and then shut your drain valves timing how long it take to full the overflow box but my pumps are in my overflow box so that doesn't work for me either.

I was looking at that pump curve previously posted, it really makes no sense to me. The slope shouldn't increase with more head pressure and it's apparently only capable of 5m of head yet the chart suggest it still do more than half it's rated flow rate at it's max head pressure. Maybe it's not showing up right on my browser, this is what I see


This is what a typical pump curve looks like

[reefermadness]

Yes....it is strange that at the max head height it is still doing over half the flow??? I thought the same thing.

[sphelps]

Must be a mistake in the graph, if you draw a line from 5m and 0l/h to the point in the line where the slope changes you'll probably get closer to the right answer.

This is probably closer to reality

[Carandiru]

Well that knocks it down to 2 pumps. Blowhole will save a little cash and I was planning on drilling the 55 gallon Im using for a sump and the 90 gallon display tank upstairs (currently in use - I know I've got brass balls).

I've seen some reviews of the blowhole saying it's a great pump - some of the early prototypes having a problem with heat though. That is apparently corrected with the final release model.

The Waveline is a really nice pressure rated pump, but more than I wanted to spend honestly - to bad the 5000 model wasn't enough only max 10ft of head.

I'll probably go with the Blowhole. What would you do?

[mike31154]

Panworld NH-150PS would be another good candidate for pushing water from basement. It is a pressure biased pump. I have one for future build and purchased the Panworld for that purpose. Although I've only run it briefly to check it out, seems like a solid product & reviews I"ve seen on them are generally positive. I've seen some Panworld DC voltage pumps as well, but not sure they're controllable as the Waveline is & what I've found is only smaller models, probably insufficient to lift the water from basement up one floor.

I also have a Poseidon(Velocity)PS4 which I may use during the winter since they are known to add some heat to the water they push. It's not as strong as the Panworld & flow biased as opposed to pressure biased, but according to the chart, it should be enough to lift sufficient flow from the basement. They are also among the most quiet external pumps available.

[RDNanoGuy]

You can't go wrong with a GenX pcx-40 (Mak 4). Mine pushes water up over 12' from my basement sump with no problems. Plus they're cheap enuff you could buy two for the price of the DC pump and keep one as a spare! It's pretty efficient too. Mine draws 122w at full load. Don't forget to plus size your return plumbing right after the pump outlet. This will reduce the pressure loss and give you more flow. I use 1 1/2" to the upstairs.