JS Pump. RS Submersible Water Drainage Pumps with top discharge. This slim line designed pump allows it to fit into small casings and pits. The top discharge on the pump provides maximum motor cooling and this allows continuous duty operation. Some models with high heads are available. The RS Pumps are ideal for the the dewatering of mine and construction sites, domestic agricultural and commercial water drainage, other uses include water circulation for ponds, waterfalls and fountains. 110v, 230, 415v. Manual or automatic with Mac 3 float switches, AGMA 22 magnetic water level regulators.