working principle:the series is a singlke open impeller centrifugal submersibled rainage pump designed to function either partly to totally submerged.the impeller,mounted on the end of the drive shaft,consists of a back disk and blades.then fluid enters the rotating blade channel through the suction.where it moves radially from the centre outwards,acquiring energy both in the form of pressure and increased speed,when it leaves the impeller the fluid is conveyed towards the volute,here part of the kinetic energy is transformed into pressure energy,and the fluid leaves the pump via the side delivery opening in the pump body.correct motor cooling is ensured by the fluid being pumped.

pump installation and applicationsQSB is designed to pump clear or slightly dirty water notm containing abrasive substances.it is reommended for small emptying jobs such as flooded basements and garages,holiday homes,tubs and used domestic water disposal.a purposely bulit pit with minimum dimensions 350x350x350h mm is recommended for fixed installation,to provide total drainage and allow correct operation of the float switch.this system antomatically starts the pmp when the fluid reached a preset level,stopping it once the fluid has been emptied.installing a suitable non return vavle on the delvery pipe prevents reverse flow when the pump stops.