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 DH-JH Progressive Cavity Pump With Hopper

Sludge 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 DH-JH Series Progressive Cavity Pump from the Diamond series comes 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 (around 18%) that do not flow easily. This helical rotor pump benefits from the largest solid handling in the market, as well as a patented pin joint that ensures no maintenance is required for 8000 hours. Fully reversible and constructed from a number of material options including stainless steel and cast iron, this progressing cavity pump is suitable for a wide variety of applications including bio-waste, industrial sludge, waste water, mortar, fish waste, soft ice and cellulose paste.

Read our guide on progressive cavity pumps for more information on how this pump works and its typical uses.

Hopper feed for dehydrated sludge with high level of dry solids (Around 18%)
One stage stator with long pitch geometry to improve performance
The stator is sealed at both ends, no o-ring is needed
Newly designed rubber sleeve to compensate for any sharp solids in the fluid
Sealing options: single mechanical seal, packing seal, double mechanical seal and cartridge
Integrated bearing lubrication system
Self priming
Reversible flow up to 3 bar as standard: Up to 12 bar with hydraulic balance
Capable of pumping fluids containing solids in suspension
Maximum viscosity 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 DH-JH Series sludge pumps with Hopper are available with the following material options:

	Steel AISI 420B	Stainless Steel 304	Stainless Steel 316	Stainless steel 304/316 HCP	Hardened Steel	Ceramic Steel	Duplex	NBR	EPDM	NBR OR EPDM FOOD GRADE	FKM	H-NBR NATURAL	PTFE	CAST IRON G25
Rotor	X	X	X	X	X	X	X
Stator								X	X	X	X	X	X
Pump body		X	X											X

How the Nova Rotor DH 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.