Why use a progressive cavity pump?

Their pressure capabilities and viscosity handling is unrivalled, which means that whilst they are quite expensive in design and large in footprint, they are often selected for applications when all other pumping technologies will fail.

What are progressive cavity pumps used for?

The design is best suited to highly viscous and lubricating fluids including oils, sludges, waste matter, biomass, pastes and grape pressing that may contain very large solids, as well as pumping viscous products over long distances.

Are progressive cavity pumps self priming?

Yes! A progressive cavity pump's tight tolerances mean it has excellent suction capabilities.

Can progressive cavity pumps handle solids in my fluid?

Yes they have excellent solid handling capabilities! However, it should be noted that abrasive fluids e.g. low viscosity/water based fluids containing solids may cause shorter stator wear.

Can these pumps be supplied with hopper?

Our progressing cavity pumps can be supplied with auger feed allowing non-flowing mediums such as dry sludge and waste matter to be pumped without clogging. We can also provide liquid injection ports which are popular when liquid waste is added to dry content waste to allow it to flow.

Can progressive cavity pumps run dry?

No! Even short period of dry running can result in damange to the rotor and stator, making dry run protection a must if there is risk of this.

Need help choosing the right pump or technical advice? Call the team on 01773 533 283.

Nova Rotors DM-JM Progressive Cavity Dosing Pump

Dosing Pump & Water Treatment Pump

Key Specifications
Max Flow Rate	45lpm
Max Head	240M
Max Temperature	150°C
Max Viscosity	1,000,000 cP
Solids	3mm
Size	3/8"

Datasheet

Enquire now about this product

The Nova Rotors DM-JM series are progressive cavity pumps commonly used as dosing pumps thanks to their constant and precise flow output. These models have superceded the told Nova Rotors MN dosing pumps. The design of this progressing cavity allows for the pumping of dense and viscous fluids containing solids at very small and precise flow rates. The DM series of helical rotor pump is also excellent at handling shear sensitive fluids; this is due to the fact the pump generates low pulsations so there is less agitation caused to the pumped medium. Frequent applications of this Nova Rotor mono pump include oily sludge transfer, bilge water transfer, sewage transfer, bio-waste and alcohol transfer.

This dosing pump is also available as a food grade progressing cavity pump constructed from polished stainless steel 316 and a food grade stator. Typical food transfer pump applications include fruit juice pulp, beer, fruit paste, grapes, grape paste, wine and edible oils.

Read our progressing cavity pump guide for more detail on how this pump operates and its popular uses.

Low pulsations, suitable for shear sensitive fluids as it will not change fluid state
No vibrations
Very high priming capability and flow reversibility
Precise and accurate flow rate for metering applications
Capable of pumping fluids containing solids in suspension
Capable of handling viscous fluids up to 1,000,000cp
Small, compact and lightweight construction
Double mechanical seal available
230v, three phase 50hz / 60hz motors available
Available in FDA approved materials for use as a food grade pump
Marine certification available

The Nova Rotors DM progressive cavity pumps are available with the following material options:

Nova Rotors DM Datasheet

FAQs

It consists of a spiralled helical rotor (like a cork screw) that sits tightly inside a rubber stator/sleeve. As the rotor turns inside the stator, it forms a set of fixed-shaped cavities that progress along the length of the stator and force the fluid inside to move along with them as they turn.