... corrosion, pollution, etc WQP series submersible sewage pump with stainless steel anti-clogging crowd said hydraulic component design, greatly improving the ... characteristics, can pump more than 8,000 hours continuous operation safety. 4 pump compact, small size, easy to move, ... pump. 6 according to user needs with a fully automatic safety protection control cabinet, the pump leaks, leakage, overload ...