Cast Iron Submersible Pumps 50 Hz are the units uniting a pump as well as a motor to the bounded unit. These are suited for submerged fitting and may be connected to the riser piping with non-return valve. These can also be installed associated with the hose or other provisions. These are the submerged pump types with the submersible motor. Cast Iron Submersible Pumps are normally applicable for the supplying of fresh water for irrigation, drinking and numerous industrial applications.