Progressive cavity screw pumps provided by rotomac industries belong to the group of rotary positive displacement pumps. The main components which characterize the systems are rotary parts [rotor] and a fixed part [stator] in which the rotor turns. The rotor is in the form of a single helical screw with extremely high pitch, great thread depth and extremely small minor diameter. The stator which is equivalent of nut and is in contrast to the rotor has a double start threat with twice the lead of the rotor. Salient features include: positive displacement, inherently self-priming and capable of handling entrapped gases; inherently non-clogging and capable of handling high percentage of solids; continuous pulsation free flow with minimum turbulence and low internal velocity within the pump; double-sealed articulation ranges from -45ºc to +350ºc; simple maintenance, sturdy construction, no valves needed which would impede the flow; and low npsh, higher suction lift up to 8.4 metres of water column and capable of developing high pressure up to 36 bar even at low pump speed. The progressive cavity screw pumps effectively handle non-newtonian media, slurries and fibrous contents up to 1 million centipoises.
