Progressive Cavity Pumps (monopumps)

We are specialises in the construction of progressive cavity pumps. This type of pump is highly flexible in terms of operation and application, a factor which has enabled it to achieve considerable market success. Its unique features makes it suitable for use in a variety of different industries.
The main features of this pump is:
 Uniform flow proportional to the speed.
 Self-priming with a minimum suction capacity of 4 mWC (NPSH), depending on the size, the number of stages and pump speed.
 Capacity to pump heterogeneous products, containing gases, solid, abrasive and fibrous materials in the liquid matrix.
 Pumping of liquids with low or high viscosity.
 Liquid dosing capacity.
 Pulse-free pumping with minimum tensile strain of the product being processed.
 High pumping pressure (6 bar per stage). Pumps are available with one to eight stages, depending on the required pressure.
The progressive cavity pump is a volumetric self-priming rotary machine, and the “pumping” part of the machine consists of two elements, the rotor and the stator. The rotor, typically metallic, is a single or multi-start screw with round thread, extremely large pitch, considerable height and high eccentricity in relation to the core diameter.
The stator, typically made of elastic material, is impressed with a cavity in the shape of a 2 or more start screw, double thread compared to the rotor and with the same eccentricity.
The rotor, rotating within the stator, is forced to perform a hypocycloid roto-translational movement. This coupling of the two elements always creates a line of contact along the profile that guarantees the seal between them. This movement creates an airtight chamber that shifts with a helical movement, from the suction casing to the delivery casing.
The Diamond series features a patented universal pin joint that ensures top performance and unprecedented flexibility of use. The standardization throughout the entire range of products achieved with this joint has resulted in optimal spare parts management as well as simplified and economical maintenance, without sacrificing reliability and long life.