A submersible pump, also known as sub pump, or electric submersible pump (ESP), is a device which comes with a hermetically sealed motor close-coupled to the pump body. A submersible pump pushes water to the surface by converting rotary energy into kinetic energy into pressure energy. This is done by the water being pulled into the pump: first in the intake, where the rotation of the impeller pushes the water through the diffuser. From there, it goes to the surface.  These include macerating / grinder for rough waste or without for normal clear water. It provides various options according to the requirement as different inlet and outlet sizes depend on the required pipe diameter / flow rates. Water type and other requirements determine the material for casing and impellers. These pumps come with standard duty or duty and standby options. These are suitable for both residential and commercial applications and can be configured with stand-alone alarm or connected to Building Management System (BMS).  It has an alarm system that can be configured with standalone alarm and can also be connected to Building management system. It comes with options of Design, Installation, Service Maintenance and Warranty for the first year. The AMC (Annual Maintenance Contract) can also be renewed annually.