Zoeller-grinder-pump-807, zoeller 807-0001 features: performance up to 55' oil filled for optimal heat dissipation proven tri-slice® cutter technology - three independent cutting channels provide over 250,000 cuts per minute.. Zoeller 807-0001 - model m807 shark residential automatic grinder pump (115v, 1 hp, 11.0 amps) - fractional hp grinder series. world's first integral automatic grinder. all cast iron grinder series for difficult residential applications where ejectors struggle. handles entire household of "flushable" materials. 115 & 230 volt grinders for residential use without commercial grinder costs.