A tank washing system is used for the inside cleaning of round and square portable containers. It consists of three rows of jet nozzles each row connected to a supply pipe extending across the tank, and means for progressively rotating each supply pipe such that nozzles swing forwardly and upwardly towards nozzles which then take over and swing forwardly towards nozzles which then continue to swing forwardly and upwardly. The washing medium generates a surge or wave, which sweeps along the tank bottom from one end to the other and entrains settled solids therein.
Tankless Water Heater is an electric element to heat the water. It is also called as Instantaneous or Demand Water Heaters, which provide hot water only as it is needed. It heats the water directly without the use of a storage tank. They avoid the standby heat losses associated with storage water heaters. It is rated by the maximum flow rate at which a desired temperature rise is met. It has life expectancy of more than 20 years. They also have easily replaceable parts that extend their life by many more years. It can be used for supplementary heat, such as a booster to a solar hot water system.