PF-series 4 in submersible effluent Pumps are designed to transport screened effluent with low counts of Total Suspended Solids (TSS) from septic tanks, dosing tanks and pump vaults. They are constructed of lightweight, corrosion resistant stainless steel and engineered plastics. All PF-series 4 in (100 mm) pumps are field-serviceable and repairable with common tools.