Mono pumps, also known, screw pumps; It is based on the principle of transferring the fluid of a metal auger moving in the worm screw logic with the help of the power transferred from the electric motor. In the meantime, special auxiliary elements for mono pumps (shaft, coupling rod, rotor, stator...etc) are used. Shaft drive in mono pumps, as in many positive displacement pumps; It is made from the reducer output. Each mono pump model; minimum and maximum operating speeds are determined in the performance tables of the pumps. Optimum efficiency is tried to be achieved by selecting the most suitable motor power and gear unit speed for the capacity-pressure values required by the user. While making these choices, the viscosity, abrasiveness and process pressure of the fluid are decisive. Mono pumps are one of the first pump types that come to mind when it comes to difficult fluid transfer. Mono pumps are preferred because they offer good solutions in the transfer of viscous, abrasive, sticky, solid particles, etc. fluids in general. Since many industrial applications require the transfer of such fluids, we can say that users are quite familiar with mono pumps. Mono pumps with AISI and cast body options; When rotor and stator materials are selected appropriately, they can be used in many different processes and fluid transfers. they can be driven between maximum and minimum operating speeds by using auxiliary equipment; It is very important in terms of responding to different pressure and capacity needs occurring in the process. At different stages of the process, using frequency inverters; If the capacity of the transferred fluid is to be changed, mono pumps will be very good choices. The spaces between the monopump rotor and stator curves are designed to allow the transfer of fluid with solid particles. These features; Mono pumps also provide the opportunity to transfer surface sensitive products without damaging them. Mono pump sealing is provided by using mechanical or soft seal. The criterion for this selection is again the property of the transferred fluid. Depending on the fluid feature, soft seals can be used or special mechanical seals can be selected.