Submersible pump for draining, lifting and re-launching of waste water and coming from drains in commercial building service. Suitable for sandy water from construction sites and waters with filamentary bodies. It is sealed with double mechanical silicon carbide seal and available in two high-performance super vortex impeller with integral free passage. Suitable for fixed installations with a coupling or mobile device if placed on the bottom of the tank itself. Maintenance is fast due to its design that allows easy access to the pump’s main components.