... pollution, etc WQP series submersible sewage pump with stainless steel anti-clogging crowd said hydraulic component design, greatly improving the dirt ... sealed, made of hard wear-resistant tungsten carbide, with a durable, wear characteristics, can pump more than 8,000 ... the pump. 6 according to user needs with a fully automatic safety protection control cabinet, the pump leaks, leakage, overload and ...