... maximum submersion depth due to mechanical seal resistant to high pressure(0.5Mpa) .Semi-open impeller made of high chrome ... pumps includes 4SD deep well pump, MXS submersible pump, KBZ submersible dewatering pump, KBS submersible slurry pump, WQ sewage pump, JET Self ... borehole pump, QB60 Micro Vortex Pump, shredder pump, QXN submersible pump, QDX submersible pump. submersible dewatering pump (KBZ)