Single Screw Pumps | DIAMOND

Progressing Cavity Pumps V series

Vertical pump for industrial, chemical, environmental sector

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 support, with a guiding 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.

Operating ranges

Portata
Flow rate
Up to 520m³/h (2290 US gpm)
Pressioni
Pressure
Up to 12bar (174 psi)
Temperatura
Temperature
from -40°C up to 150°C

Models

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 10 1400 6
D025 1K2 5,1 1400 12
05K4 05K4 1,5 800 24
D025 025K8 0,7 800 48
D030 4L1 14 1000 6
D030 2K2 7,2 1000 12
D030 1K4 2,9 800 24
D030 05K8 1,5 800 48
D040 10L1 22 800 6
D040 4K2 11,5 800 12
D040 2K4 4,2 600 24
D040 1K8 2,4 800 48
D040 16L1 32,5 800 6
D040 8K2 16,8 800 12
D040 4K2EL 11,5 800 18
D060 20L1 39,1 700 6
D060 10K2 17,2 600 12
D060 4K4 7,2 500 24
D060 2K8 4,2 600 48
D060 30L1 46 700 6
D060 16K2 21,5 600 12
D060 10K2EL 17,2 600 18
D120 40L1 65,5 600 6
D120 20K2 31 600 12
D120 10K4 11,7 400 24
D120 4K8 7,3 500 48
D120 60L1 82 500 6
D120 30K2 40,5 500 12
D120 20K2EL 31 600 18
D300 80L1 88 400 6
D300 40K2 45 400 12
D300 20K4 21 400 24
D300 10K8 11,7 400 48
D300 120L1 120 400 6
D300 60K2 64,5 400 12
D300 40K2EL 45 400 18
D400 160L1 161 400 6
D400 80K2 90 400 12
D400 40K4 45 400 24
D400 20K8 19,5 350 48
D400 240L1 261 400 6
D400 120K2 116 350 12
D400 80K2EL 90 400 18
D400 40K2E 45 400 24
D400 20K4E 19,5 350 48
D500 320L1 255 350 6
D500 160K2 142 350 12
D500 80K4 56 250 24
D500 40K8 26 250 48
D500 480L1 368 350 6
D500 240K2 185 350 12
D500 160K2EL 142 350 18
D500 80K2E 56 250 24
D500 40K4E 26 250 48
D600 640L1 540 350 6
D600 320K2 280 350 12
D600 160K4 101 250 24
D600 80K8 51 250 48
D600 960L1 802 350 6
D600 480K2 403 350 12
D6 320K2EL 280 350 18
D600 160K2E 142 250 24
D600 80K4E 56 250 48

Materials

Casing materials

Wide selection of cast iron, alloy, and stainless steel bodies, including corrosion-resistant options for harsh environments.

Coatings
On request, solutions such as fluoropolymers and ceramic coatings to ensure superior performance.

Seal Shaft Materials

Steel and special alloy materials with advanced coatings to ensure long durability and resistance, as well as advanced protective coatings such as ceramic oxides and tungsten carbide.

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 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).

Cardan Joint: Cardan joint is the best solution for heavy application with high pressure inside the pump casing. It improves the allowable torque up to 4 times torque with the same pump size. It is available with internal metal joint protection to for an additional improvement of the rubber service life.

Materials of Rotors

Steel and special alloy materials with advanced coatings to ensure long-lasting durability and resistance.

Connections

Output sections suitable for reduced load loss. The outlet pipe is manufactured
in various metals based on needs. Connections available UNI EN / DIN or ANSI
The geometry is specifically made to facilitate the flow of the product into the hydraulic part.

Flanges and threaded connections for various applications, including food-grade models and high-pressure environments.

Compliant with UNI, DIN, and ASME standards.

Sealing Systems

Shaft sealing: Different sealing systems can be installed. Each solution is suitable to the specific application. The types available are: single acting mechanical seal, with quench, double acting mechanical seal back to back or tandem, Gland packing with or without flush.
Seals type are interchangeable on the standard pump. Each solution was carefully engineered 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+2

Bases

Base plates: The bottom supports, characterized by considerable thicknesses, are very strong. Available in carbon steel or stainless steel.

Optional

Equipment and optional

DV LONG VERSION
The “LONG" version is an effective solution for those applications with particularly deep wells & tanks. Is supplied with a strong downhole mounting plate with blocking cone. This component ensures maximum stiffness of installation and minimizes vibration, the inlet is removable to facilitate replacement of the rotor: the maintenance times are considerably reduced.

  • Temeprature probe for dry running protection  (standard in the ATEX version) 
  • Flow switch
  • Stainless steel stator cover
  • Industrial flanged Bypass (or with threaded connection)
  • Quench Pot flushing
  • Stainless Steel Lantern
  • Hermetic lantern
  • Carter to protect the motorization
    (For details, see the brochure constructive options, equipment and installations)

Variants

DV Long version

It is the long version of the vertical series. This version requires a shaft bottom trestle with locking cone to minimize the vibrations and oscillations of the pump caused by the high length of the pump itself. The removable inlet allows access to the rotor-side joint without having to disassemble the entire pump body.

DV Long version

DV Short version

It is the compact version of the vertical series. This version allows installation with only the anchor plate. 

DV Short version

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