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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.

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Operating ranges

Flow rate

Up to 520m³/h (2290 US gpm)

Pressure

Up to 12bar (174 psi)

Temperature

from -40°C up to 150°C

Applications

Discover the product's application characteristics Progressing Cavity Pumps V series

Biogas

Sludge Disposal (including Waste Transformation)

Wastewater Treatment and Sludge Processing

Maritime and Naval Sector

Mining and Drilling Industry

Onshore-Offshore Platforms

Models

m3/h - bar gpm - psi

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).

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.