Zoeller 53-0029 BN53 Submersible pump for dewatering (sump) or effluent (septic tank systems). This model includes 15' Piggyback Variable Level Float Switch and 1-1/2" x 2" adapter. Features: Float operated, submersible (NEMA 6) 2 pole mechanical switch & variable level long cycle systems available Corrosion resistant powder coated epoxy finish No sheet metal parts to rust or corrode Stainless steel screws, switch arm, guard and handle No screens to clog Watertight neoprene square ring between motor and pump housing Solid buoyant polypropylene float Oil-filled, hermetically sealed, automatic reset thermal overload protected motor Upper and lower sleeve bearings running in bath of oil Entire unit pressure tested after assembly Carbon and ceramic shaft seal Maximum temperature for effluent or dewatering 130F (54C) Passes 1/2" spherical solids 1-1/2" NPT discharge On point: 7-1/4", Off point: 3" Watertight and dust tight Permanently oiled bearings Impeller Type: Non-clogging vortex imp