ROWA®-HP - Düchting Pumpen

ROWA ® -HP
High-Pressure Centrifugal Pump

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Pump Type ROWA ® -HP Quality through Experience
Fields of Application
Handling of clean to slightly contaminated
corrosive liquids up to discharge pressures of
100 bar
Design
Horizontal, radial split, ring section multistage
pump with radial impellers and single fl ow
entry
Pump Size
DN 50 to DN 300 (ANSI 2” - 12”)
Ibiza, SPAIN
Operating Conditions
Capacity: up to 3.500 m³/h (15,000 gpm)
Pressure: up to 100 bar (1,450 psi)
Rotating Speed: up to 3.800 rpm
Temperature: up to 120 °C
Connections
Pump with one or two connective shaft ends
Flange dimensions according to DIN or ASME
standards
Pump nozzle location rotatable in 90° steps
1992
Plant Capacity:
10.000 m³/day
Plant Capacity:
22.500 m³/day
Materials of Construction
Seawater desalination requires corrosion and
abrasion resistant materials. This is why we are
using DUPLEX stainless steel as our standard
material for all wetted pump parts
Quality Assurance
Manufacturing
Machining and
balancing using
latest multiple
axis machines to
achieve superior
precision and
performance
To ensure highest quality, every
pump is tested and certifi ed
on the test bed according to
international standards
Wilayas, ALGERIA South Sinai, EGYPT
Plant Capacity:
6.000 m³/day
DÜCHTING PUMPEN offers improved
corrosion resistant materials like SUPER
DUPLEX stainless steel with Pitting
Resistance Equivalent numbers above 40
Positive Experiences
Precision Casting
Impellers und
diffusers are cast
by using ceramic
moulds to get
smooth surfaces
for outstanding
hydraulic
performance
Impeller in DUPLEX stainless steel after
12 years of operation in a mediterranean
seawater desalination plant
Plant Capacity:
18.000 m³/day
Montazah, EGYPT
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Technical Features ROWA-HP DN 50 - DN 300 (ANSI 2“ - 12“)
Medium lubricated
plain bearing eliminates
second mechanical seal
Impeller
design in consideration of optimal
specifi c speed cast in ceramic
moulds. Different impeller sets
available for every pump size
Diffuser
with reduced
impact losses due
to CFD optimized
fl ow channels
Suction branch
in horizontal orientation
for constant inlet velocities
and reducing suction
pressure requirements
Wear Rings
in carbon fi ber
reinforced PEEK
for minimizing fl ow
losses and for
outstanding reliability
Discharge Casing
optimizied by
numerical calculations
to achieve best
outfl ow conditions
Balancing Device
axial thrust
compensation by
balancing discs or
balancing drums
Bearings
supplied with oil-lubricated
anti-friction bearings for
long-life performance
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Performance Data DN 50 - DN 300 (ANSI 2” - 12”) Energy Recovery
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Layyah & Khor Fakkan, UAE Sur, OMAN Jeddah, KSA
Tianjin, CHINA
Plant Capacity:
Plant Capacity:
80.000 m³/day
100.000 m³/day
Plant Capacity:
44.000 m³/day
While energy recovery by Pelton Turbines was state of the art in the 90s
and is still very attractive in terms of reliability and simple but effi cient
plant control, DÜCHTING PUMPEN follows the trend to pressure
exchanger systems and is offering not only proven energy recovery
turbines type ROWA ® -RT but also booster pumps type ROWA ® -HPB.
Pelton Turbine Type ROWA ® -RT
Design
Pelton Turbine, single or double nozzle application
Operating Conditions
Capacity: up to 1.000 m³/h (4,400 gpm)
Pressure: up to 100 bar (1,450 psi)
Plant Capacity:
30.000 m³/day
Pump Type ROWA ® -HPB
Design
Single stage centrifugal pump end-suction
type with radial impellers and single fl ow entry,
horizontal or vertical pump arrangements possible
Pump Size
DN 80 to DN 400 (ANSI 3“ - 16“)
Features
� Material of construction in DUPLEX or SUPER DUPLEX
stainless steel
� Pull-out process design for easy access to wear parts
� Cartridge mechanical seal
� Radial thrust compensation by double volute casing to
reduce shaft defl ection and bearings loads
� Wear rings in compound material to achieve small
clearances but reliable operation
Operating Conditions
Capacity: up to 4.000 m³/h (18,000 gpm)
Discharge pressure: up to 100 bar (1,450 psi)
Suction pressure : up to 80 bar (1,160 psi)
Today
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DÜCHTING PUMPEN - Company Profi le
DÜCHTING PUMPEN is a privately owned German company with more than 70 years of experience
in the fi eld of advanced centrifugal pumps for use in desalination and process industries.
Our motto “Quality Through Experience” forms the basis of our sophisticated product range. The
capabilities of our company in the construction, manufacturing, testing and commissioning of our
products is highly respected in the industries we serve.
Our reputation is based on a sustainable company policy, focusing on effi ciency, reliability,
innovation and thorough customer after-sales service which is provided by partners in the countries
where our products are installed.
In order to meet the current demand for highly effi cient and reliable products in seawater
desalination, DÜCHTING PUMPEN offers optimized high-pressure pumps and energy recovery
turbine units. To minimize total energy costs in high pressure seawater desalination plants, we are at
your service during both design and operation.
Having supplied high-pressure pump units for Seawater Reverse Osmosis from its commercial start,
DÜCHTING PUMPEN can look back on a large number of references.
DÜCHTING PUMPEN Maschinenfabrik GmbH & Co. KG
Wilhelm Düchting Str. 22 58453 Witten, Germany Web: www.duechting.com
Phone: +49 2302 969 0 Fax: +49 2302 69 04 43 eMail: info@duechting.com