The MUV Pre-filter Replacement has a stainless steel fine mesh that blocks debris from entering into your MUV Water Filter. This Pre-filter is used in conjunction with the Rush Pump and is placed on the end of the hose that goes into the water source. The Pre-filter does not block microbiology but does prevent dirt, rocks, sticks, and other debris from entering the MUV Water Filter and extends the filter life.
The Pre-filter can be cleaned by unthreading the top and bottom pieces and removing the stainless steel mesh. The mesh can be rinsed in any water source to unclog the wire mesh. Put the pieces back together and rethread the top and bottom.