DN-JN Diamond Series

Size Model Qmax
2 bar [m³/h]
rpm max P max [bar]
D020 1L1 4.9 1400 6
D020 05K2 2.5 1400 12
D020 025K4 0.7 800 24
D025 2L1 6.9 1000 6
D025 1K2 9.4 1000 12
D025 05K4 1.5 800 24
D025 025K8 0.5 600 48
D030 4L1 11 800 6
D030 2K2 5.6 800 12
D030 1K4 2.2 600 24
D030 05K8 1 500 48
D040 10L1 16.5 600 6
D040 4K2 8.5 600 12
D040 2K4 3.7 500 24
D040 1K8 1.5 400 48
D040 16L1 23.5 600 4
D040 8K2 12 600 8
D060 20L1 28 500 6
D060 10K2 14 500 12
D060 4K4 5.7 400 24
D060 2K8 2.6 350 48
D060 30L1 33 500 4
D060 16K2 16.5 500 8
D120 40L1 43 400 6
D120 20K2 20 400 12
D120 10K4 10 350 24
D120 4K8 5 350 48
D120 60L1 63.5 400 4
D120 30K2 32 400 8
D300 80L1 76 350 6
D300 40K2 38 350 12
D300 20K4 15.4 300 24
D300 10K8 8.5 300 48
D300 120L1 110 350 4
D300 60K2 55 350 8


Patented Pin Joint:

The pin-type joint, the actual heart of the single screw pump, is the best solution of its type on the market. It offers greater duration, reliability and reduced maintenance costs, managing to combine extreme compactness with unrivalled strength. Its particular manufacturing enables the sub-division of axial loads and torque in different elements, making it one of a kind. As well as the above, replacement of worn parts is cheap thanks to the bushes in the worn zones, avoiding costly replacement of parts (rotor, drive shaft, and female drive shaft. To resist high pressure in the pump casing up to 12 bar, the pin can be hydraulically balanced.


Base plates:

The base plates, characterized by considerable thicknesses are very strong. Available in carbon steel or stainless steel. They can also be provided according to standard API 676, in a trolley version, with anti-vibration housing or on skids, according to the client’s specifications.




The parts in contact with the product of the DN and JN Diamond Series pumps can be manufactured in various materials. From the version in cast iron to stainless steel (AISI 304 and AISI 316), as well as other materials on request such as Duplex and Super Duplex. Also, in the version in cast iron, the rotating parts are still manufactured in stainless steel AISI 420 or on request in AISI 304 / AISI 316.

Low pulsating flows:

Tensional stress and pulsating flow are very low. The centrifugal effect is reduced to a minimum thanks to the low operating speeds and mainly the axial development of the pump.

Shaft sealing:

Different sealing systems can be installed, each solution being suitable to specific usage. The types available are: mechanical seal, single outer mechanical seal, single mechanical seal with quench, back to back double mechanical seal and double mechanical seals in tandem, Packing seal and flushed packing seal. The sealing systems are all interchangeable on the standard pump. Each solution was carefully engineered while taking into consideration  all the operating conditions. As well as changing the sealing system, you can also install various types of mechanical seals based on the application. The compartments are suitable for installation of the seals manufactured according to the standards ISO EN 12756. As well as this, it is possible to use cartridge seals from the main manufacturers, also available according to standards API 682 category 1.




The Diamond series is based on the concept of modularity in every characteristic: hydraulic parts, casing, seals, base plates, housing, drive shafts. Each part can be manufactured in a series of variants without changing the structure of the machine, while keeping the main spare parts standard.

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Duration, efficiency, reliability and low consumption. With the Diamond series, we have reached the maximum levels of technological development in every aspect.


The Diamond series was designed to be versatile whatever its use. For this reason it can be set up with various options and accessories suitable for every field of application. As well as the above, the peculiar features of the single screw pump are naturally taken advantage of with various types of fluids pumped, from low to the highest viscosity, clean and containing solids varying in size and nature.


Al the drives which are installed on the Diamond series have been tested for long periods and subject to strict and rigorous technical checks. We can install both electric and hydraulic motors.  All the models of reducers and variators present determined characteristics in terms of strength, size of the bearings and the quality of the gears.



Maximum performance level, exceptional operating efficiency thanks to the optimum volumetric yield and high pressure and is consumption reduced to a minimum. All the Diamond series hydraulics efficiencies were calculated to guarantee the maximum found on today’s market.


Each part is manufactured according the highly restrictive quality specifications. Finishes and precision of each part are the basis of each pump manufactured. All parts are subject to specific controls based on their characteristics and functionality.



  The Diamond series is designed to ensure easy maintenance and normally require the replacement of a minimum number of components. In particular the joint bushes allow the replace of the same without having to replace shafts and rotors. The costs of maintenance are really reduced. The cost of the pump, considered in his full life cycle, is highly competitive.

easy Manintenance higher Long life cost benefit



Cost / benefit :

The Diamond series, thanks to the compactness of its elements combined technical success without comparison at very competitive costs. The modularity allows you to make the right  solutions depending on the application to avoid paying for features you do not need, all in favor of its competitiveness.



The peculiarities of the hydraulic parts of the progressive cavity pump allow excellent self-priming (up to 7m). The Diamond series were designed to create the minimum loss possible in the pump body, thanks to large sections and a joint compact design and fluid dynamic.


Ease of installation:

The pumps of the Diamond series are easy to install due to compactness, simplicity of operation and operational flexibility thanks to the various features included.

Detailed documentation:

Each pump comes with clear and detailed operating instructions. Orders are followed by experienced and qualified staff that integrates in providing detailed documentation on demand and specific for the product supplied.

user-maintenance-manual for each pump


Download Brochure: DN-JN Diamond Series

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