Monopomps consist of stator that is made of rubber or material selected according to nature of work and a helical rotor rotating inside the stator. The rotor is made of stainless steel, depending on the nature of the fluid to be pumped be manufactured of special steel, hardened, and if desired coated. The fluid contacting surfaces made of stainless steel. Contact between the rotor and the stator provides a uniform and continous flow rate during operation to transfered fuid thus physical and chemical properties of the fuild does not detorate. Packing seal or mechanical seal is used. Monopomps particulary are designed for problematic liquids. Flow through the pump is uniform. Speed and pressure change is smooth. That's why its ideal for fluilds which are from sudden change in pressue and speed. Construction is simple. There is no element such as valve, plug valve etc. Seal is at the suction side. Therefore the viscous fluid, the fluid containing solid particles is suitable to transfer. Pump flow rate is proportional to pump speed. The pressure from the pump is not relevant to pump speed and flow. The pump has the ability to absorb up to 4-5 meters. The pump provides pumping without foam. It prevents gasses and corrosive vapour that may arrise from turbulance. Pumps, using electronic speed controller or variator can reach to the maximum and minimum capacity immediately. Changing the direction of rotor changes the direction of flow. Thus instead of discharge suction , instead od suction discharge is obtained. Due to simple construction technical malfunctions can be easily to removed.