3" Bottom Drain with Built In Diffuser Air Diffusers The table below shows GPM

The table below shows GPM flow at feet of head pressure

but without the air diffuser

Kit does not include 3" flexible PVC pipe

TB Pumps PS2

5" long on one end

3" Bottom Drain with Built In Diffuser Air Diffusers The table below shows GPMA bottom drain and an air diffuser built into one unit! The circulation created by the air diffuser will increase the amount of debris removed by the bottom drain and will increase oxygen levels in the pond. Bottom drain base has six stainless screws and two rubber gaskets for a positive seal when penetrating liner! Connects to 3" PVC pipe and fittings. Air diffuser is set up for 1 2" or 5 8" tubing, recommended air flow of 1 2 to 2 CFM.