The perfect disposer for the lavatory unit in boats and recreational vehicles- it takes care of toilet waste. A rotary cutter shreds waste before it is pumped out through the discharge hose. The pump can be connected directly to the bowl discharge outlet or holding tank.. Connection: Inlet: 1-1/2" hose, 1-1/2" BSP thread, 1-1/2"- 11-1/2" NPTF, Outlet: 1" hose