WFB series non-sealed self-control self-priming pump adopts non-leakage V-shaped seal assembly, which eliminates the packing seal, packing seal and mechanical seal of traditional water pump, and completely overcomes the “running, running, dripping and leaking”, which is a substitute for the original various Ideal equipment for long-shaft submersible pumps, submersible pumps, and submersible sewage pumps.