Nova Rotors – progressive cavity pumps
Nova Rotors specializes in the construction of progressive cavity pumps.
Its unique features makes it suitable for use in a variety of different industries – oil and as, water treatment, food and many others.
The main features of this type of pump are:
- Uniform flow proportional to the speed.
- Self-priming with a maximum suction lift capacity up to 8 mWC (low NPSHa application)
- 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 capability.
- Low pulsation 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 positive displacement device. The “conveying” parts consists of two elements, the rotor and the stator.
The rotor, typically metallic, is single or multiple screw with a rounded thread, extremely large pitch, considerable length and high eccentricity in relation to the core diameter.
Definitely…
The stator, typically elastomeric, has a double- or multi-threaded helical cavity relative to the rotor, 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.
Standardization across the entire product range with this joint optimizes spare parts management and simplifies economical maintenance without sacrificing reliability or longevity.
Due to its compact dimensions, the screw pump enables pulsation-free pumping while keeping the fluid unaltered and undamaged.
Accept the presence of solid parts and can be suitable to pump fluid with viscosity up to 1.000.000 cps.
