Schaefer e series septic effluent pump was designed for aerobic septic system spray and drip systems. Pumping 20 gallons per min with a 1/2 H.P motor with a proven design that lasts on average 10-15 years. The Schaefer e series is a direct replacement for any pump that is mid suction that is the screen is in the middle of the pump. It has 1 1/4 top connection which is the industry standard so you quickly change your pump out and not have to modify it in any way. When changing your pump, you will want to replace the float that operates the pump as well on Schaefer pumps we strongly recommend Pump Master mechanical floats. You also don’t want to pump a new pump in a system that has not been pumped by a professional pumper.