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 DHP-JHP Progressive Cavity Pump With Hopper & Bridge Breaker

Sludge pump and 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 Diamond series includes the DHP-JHP Series Progressive Cavity Pump, which comes as standard with hopper and auger screw for feeding the product into the pump. This allows the pump to handle extremely high viscosity matter with a high concentration of dry solids that do not flow easily. This model of progressive cavity pump has the addition of a motorised paddle integrated inside the hopper to ease the slow of solids into the pump. This makes it ideal for pumping substances which tend to form a bridge such as doughs or whole fruits and vegetables.

The helical rotor pump is fully reversible and comes in the option of a number of materials including stainless steel and cast iron, allowing it to be used for a number of applications involving high viscosity sludge that has a high concentration of solids including bio-waste, dehydrated sludge and food processing.

For more information on the operation and popular applications of this pump, read our guide to progressing cavity pumps.

Hopper and bridge breaker paddle for matter with high solids content such as whole vegetables that form a bridge
One stage stator with long pitch geometry to improve performance
The stator is sealed at both ends, no o-ring is necessary
Newly designed rubber sleeve to compensate for any sharp solids in the fluid
Range of sealing options including; single mechanical seal, packing seal, double mechanical seal and cartridge
Integrated bearing lubrication system
Very high priming capability
Reversible flow up to 3 bar as standard: Up to 12 bar with hydraulic balance.
Able to handle solids
Capable of handling viscous fluids up to 1,000,000cp
Low pulsations for shear sensitive fluids
230V, 3 Phase 50hz / 60hz motors available.
API, ATEX, Food Grade EHEDG, 3A and Marine certification available

Key Benefits:

The Nova Rotors DHP-JHP Series Sludge Pumps with Hopper and Paddle are available with the following material options:

Nova DHB-JHB1.jpg

How the Nova Rotor DHP 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.