Basement return pump help

[motoking_1990]

Actually I did enter the numbers wrong the first time. But I am still at 44’ head pressure. If you had no issues I will go for it. What size line did you run? I could use hose from pump to tank then pvc into the tank.

How are you pumping up 20 feet but only using 10 foot of pipe?

The instructions above the calculator said that was the horizontal length

 

[UncommonSense]

I’m surprised nobody’s mentioned Iwaki external pumps yet!

(This one’s a tad undersized, but gives you a decent idea… only 1,100gph max, but capable of almost 27ft of head…)

 

[KStatefan]

The instructions above the calculator said that was the horizontal length

That is not what means. That calculator is based off of the equivalent length method and it was the total length of your piping it will take that length and then add the equivalent length of the fittings to get a total length then calculate the friction loss of that.

In my opinion 2500 gph is way to much to try to pump thru 1" pipe.

 

[tsharpe291]

I used a panworld years ago, worked great. my current pump is reef octopus
bubble blaster 10000. just a dumb ac pump. had a vectra l2 for a year until it stopped working. not going down that road again for what they cost.

 

[KStatefan]

That is not what means. That calculator is based off of the equivalent length method and it was the total length of your piping it will take that length and then add the equivalent length of the fittings to get a total length then calculate the friction loss of that.

In my opinion 2500 gph is way to much to try to pump thru 1" pipe.

That does not read very good at all. I am going to blame my new keyboard with a different style switch.

I will try again

What they mean is all the pipe in the system in a horizontal length. The head loss in a system is comprised of two parts gravity and friction. The gravity part is easy it is just the difference in water height that you are raising the water. Display tank water height - return pump section height.

The friction loss part is more complicated. The Pentair calculator is using equivalent horizontal length to calculate that. It takes your data and converts that to a total equivalent length then uses your flow rate to get a friction loss.

The friction loss can be a very big loss when piping is undersized. When the velocity doubles the head-loss will be 4X. I think the Pentair calculator is a good tool to get you in the ballpark. Use that data and figure out what type of pump it will take to get your 2500 GPH with 1" then go up to 1.5" and see the difference in pump required. If you can not upsize all the way upsizing part of the way will help also.