Which Iwaki should I get?

[wisnia99]

You do not mention anything about the plumbing on the return pump. I am going to assume its 1" pipe, since that is what most people would have. If you find the 55 isn't enough, you may want to consider upsizing to 1 1/2" pipe (obviously you would need adapters on both ends). I have used PanWorld pumps on my basement sumps for decades (they last for decades unlike most of the disposables today). When I upsize to 1 1/2" flex from 1" I reliably see a 20% increase in flow. Something to keep in mind.

Hi, Yes I use 1" pipe. I guess it would be easier for me to get the bigger pump like 70 than upgrade the pipes :)

 

[tedfisher496]

If you do decide to go with a AC pump make sure you get a whole hose surge arrestor for your service entrance. I had a 1HP blue line pump, the power went out and the pump got fried, when i OHM the winding out it was grounded. The arrestor will protect any electronic in the house. Its worth the investment.

 

[tedfisher496]

Hi, Yes I use 1" pipe. I guess it would be easier for me to get the bigger pump like 70 than upgrade the pipes :)

Bigger pipe will increase the volume of water but will decrease the pressure. I would stick to 1" and use a gate valve.