I'm looking at replacing our sewer basin at our lake cabin, I found a product made by Liberty pumps,
http://www.pexuniverse.com/liberty-p...e-pump-systems
I need a basin that is not very tall, a 24" model like the pro380 model. I'm having a problem calculating
which model I need. They refer to "shut off head" term on the specs. I'm not familiar on how to calculate this. My drain field is 25' away from the pump with a 6' uphill grade. The discharge pipe is 2". My current pump is a 1/2HP and does fine, I'd like to order this basin in a 1/2HP but I dont want the wrong one.