Pumps DV Diamond Series


Diamond Series DV vertical pump carbon steel casting

Diamond Series DV short Vertical pump carbon steel casting

Diamond Series DV short Vertical pump carbon steel casting

Flanged Industrial Series

The Vertical series is the ideal solution for pumping from wells or tanks. It is suitable for pumping viscous and non-viscous products as well as abrasive or aggressive ones.
Available with outlet flange connections UNI, DIN, ANSI and GAS BSP; the suction nozzle instead is made with a particular design optimized for priming the product in which it is lost in.

The length is totally customizable according to the setup requirements. The stainless steel version (AISI 304 or AISI 316) has a protective jacket that covers the stator as standard to prevent it from corrosion.

There are two standard configurations availables: the short version and the long version.
The difference is in the length of the installation with which they are required for. The short version is compact, robust, easy to install.The long version instead allows installation in deep wells or tanks, and presents a complete series of dedicated optimizations such as the removable inlet for easy maintenance of the rotor, stator and coupling.
A fundamental characteristic is the support of the downhole baseplate, with a clamping cone which makes the pump very stable and vibration free even in extreme conditions of use.

Both series are always configured in a monobloc arrangement.


  • DV Short version: Compact. This version allows installation with only anchor plate.

DV series short


  • DV Long version: This version requires to be fixed with a downhole baseplate with the clamping cone to minimize the vibrations and oscillations of the pump caused by the considerable length of the pump itself.


DV series Long




Typical applicationsTable of Models Detailed CharacteristicsStrenghtsVideoInquiry requestSpare Parts request

Sewage sludge
Water Treatment
Industrial sludge
Detergents and product for chemical industry
Product of papermaking industry
Product derived from petro-chemical
Marine Industry

Operating range


Up to110m³/h
Up to 12 bar for the standard series
from -40°C until to 150°C

Flow and Pressure

SizeModelQmax 2 bar [m³/h]rpm maxP max [bar]


<strong>Patented Pin Joint:</strong>

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 durability, 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.
(standard for DV Series).


<strong>Base plates:</strong>

The base plates, characterized by considerable thicknesses, are very strong. Available in carbon steel or stainless steel.



The parts in contact with the product of the DV 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.

<strong>Low pulsating flows:</strong>

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.

<strong>Shaft sealing:</strong>

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 seals 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


<strong>Modularity: </strong>

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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<strong>Performance: </strong>

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.

<strong>Efficiency: </strong>

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


<strong>Cost / benefit :</strong>

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.

<strong>Ease of installation:</strong>

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.

<strong>Detailed documentation: </strong>

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



Brochure DV kurtz & lang Industriebau vertikal Reihen mit Flanschanschlüssen
Brochure DV kurtz & lang Industriebau vertikal Reihen mit Flanschanschlüssen

Brochure DV kurtz & lang Industriebau vertikal Reihen mit Flanschanschlüssen
Diamond Baureihe Exzenterschnecken
lang: Deutsch

Brochure DV LONG & SHORT Verticales Industrielle
Brochure DV LONG & SHORT Verticales Industrielle

Brochure DV LONG & SHORT Verticales Industrielle
Diamond Series Pompes à cavité progressive
lang: Francais

Brochure DV LONG & SHORT Industrial
Brochure DV LONG & SHORT Industrial

Brochure DV LONG & SHORT Industrial
Diamond Series Progressing Cavity Pumps
lang: English

Brochure DV LONG & SHORT Verticali uso industriale
Brochure DV LONG & SHORT Verticali uso industriale

Brochure DV LONG & SHORT Verticali uso industriale
Diamond Series Pompe a Cavità Progressiva
lang: Italiano

Application questionnaire
Application questionnaire

Download inquiry form to be compiled offline

Offer request

Offer request

Select witch kind of user
*field requestedAdd a new request Delete a new request added

Spare parts request

Spare parts request

for the section spare parts of the pump you can see here for:diamond series-wobble pumps or MN series
for the other series you can finad on the web site, in case follow the sample video help (click here)


Casing material

Base materials:
GG25, CF8 (AISI 304),CF8M (AISI 316), F55 (Super duplex)
fluoropolymer ECTFE (Halar®)

Materials of the sealing shaft

Base materials:
AISI 420, AISI 304, AISI 316, F51(Duplex), F55 (Super Duplex)
Hardened Chrome plated HCP
Chrome oxide plasma (ceramic coating)

Rotor material

Base materials:
AISI 420, AISI 304, AISI 316, F51(Duplex), F55 (Super Duplex)
Heat treatments:
Hardening induction (only on AISI 420)
Hardened Chrome plated HCP
Chrome oxide plasma (ceramic coating)
Tungsten carbide HVOF

Stator material

Base materials:
NBR, food grade NBR, white NBR food grade
EPDM, EPDM food grade, white EPDM food grade
FPM, FPM food grade
HNBR, HNBR food grade
Buna-N ( available on select models on request)
HYPALON (available on select models on request)
PTFE (available on select models on request)

Base plates
Base plates

Botton downhole plate with fixing cone.
Fixing system on customer specific.
(For details, see the brochure constructive options, equipment and installations)

Flange UNI 2278 PN16 for pumps at 1 and 2 stage
Threaded connection GAS BSP
Sealing system
Gland seal with flushing B02 (flushed according to API PLAN 51, 52, 55)
Single mechanical seal with Quench Q0K9 (flushed according to API PLAN 51, 52, 55)
Back-to-back double mechanical seal D0K9 (flushed according to API PLAN 53A, 54)
Tandem double mechanical seal K0K9 (flushed according to API PLAN 52, 53A, 55)
Single or double cartridge seals also in API 682 version category 1
(For construction details, see the brochure sealing systems and seals)
Optional for coupling rod
Joint protection
Balanced hydraulic joint
(For details, see the brochure constructive options, equipment and installations )
Protection devices

Flow switch
Pressure switch
(For details, see the brochure constructive options, equipment and installations )

Control devices
Control panel
Control panel with inverter
Drive with integrated inverter
(For details, see the brochure constructive options, equipment and installations )
Equipment and optional
Stator cover jacket in stainless steel (standard in the stainless steel series)
Separate suction pipe (standard on DV – Long)
Barrel flushing
Coupling flange in stainless steel
Hermetic coupling flange
Carter to protect the motorization
(For details, see the brochure constructive options, equipment and installations )