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Submersible Sewage Pump Applications
Submersible Sewage pumps are used for blackwater applications. They typically have semi-open non-clog or vortex impellers. These workhorse pumps will handle 1-1/2” solids in residential and smaller commercial systems. They handle 2” solids or greater in larger applications we typically see in plans and specifications.
I am often asked where to use a sewage pump designed to handle 3” and 4” solids vs. one for 2” solids. I was puzzled also. How could 4” solids get down the pipe from a toilet? I have the experience of my children and now my grandchildren trying to stuff a 4”solid down the toilet. It does not work!
I contacted the product line manager at Tussu® for their expertise. Although there may be some coagulation in larger systems, that is not the answer. The pump is not engineered to handle 4” solids. It is engineered to provide a large flow rate with a non-clog impeller. Then it is tested to see what size solid sphere it can pass. In designing plumbing systems in buildings, don’t worry about any size larger than 2”.
A submersible sewage pump may be used in all the applications: blackwater, graywater, and rainwater. When lighter duty applications require a larger pump, this may be your only option
