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 progressing cavity pumps handle solids in my fluid?

Yes! However, it should be noted that abrasive fluids e.g. low viscosity/water based fluids containing solids may cause shorter stator wear. Therefore whilst large solids and high solid content can be handled, this is usually reserved for viscous, lubricating fluids.

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 damage 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 DN-JN Progressive Cavity Pump

Fuel Transfer Pump & Viscous Fluid Pump

Key Specifications
Max Flow Rate	11333lpm
Max Head	480M
Max Temperature	150°C
Max Viscosity	1,000,000 cP
Solids	30mm
Sizes	3/4" to 24"

Datasheet

Enquire now about this product

The Nova Rotors DN-JN Series Progressive Cavity Pump is the standard model in the Diamond series. Thanks to being API676 approved it is suitable for the pumping of a hydrocarbons as well as a vast range of viscous fluids and those containing solids. The DN helical rotor pump model's drive is directly coupled to the pump via a flange as an economical and compact solution, with ease of maintenance. The JN series of mono pump on the other hand has a drive connected to the shaft inlet via a coupling joint and has modular bearing housing, which has greater durability as the bearings take the stress generated by the pump. However this model requires additional space within the installation.

Both of these progressing cavity pump models benefit from a smooth pumping action to ensure that the state of the fluid is not altered during pumping, this is especially important when pumping shear sensitive fluids. The main applications for this mono pump unit include the transfer of fuels, hydrocarbons, waste sludge, sewage and water.

Read our progressing cavity pump guide for more information on the operating principle and typical applications.

API 676 & ATEX approved progressive cavity pump
DN series - drive is coupled directly to the pump via a flange
JN series - drive is connected to the shaft inlet via a coupling joint
Pump can be mounted on baseplate or trolley and fitted with bypass valve
One stage stator with long pitch geometry to improve performance
The stator is sealed at both ends, no o-ring is required
Newly designed rubber sleeve to allow for any sharp solids in the liquid
Seal options include single mechanical seal, packing seal, double mechanical seal and cartridge
Integrated bearing lubrication system
Good self priming capabilities
Reversible flow up to 3 bar as standard: Up to 12 bar with hydraulic balance
Capable of handling liquids with solids in suspension
Can transfer viscous fluids up to 1,000,000cp
Low pulsations for shear sensitive fluids
230V, 3 Phase 50hz / 60hz motors available
Marine certification available

Key Benefits:

The Nova Rotors DN-JN Series API 676 Progressive Cavity Pumps are available with the following material options:

Nova DHB-JHB1.jpg

How the Nova Rotor Diamond DN Progressive Cavity Pumps Work – Animation

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.