2. Quality through experience for 75 years
DÜCHTING PUMPEN is a privately owned company based in
Witten (Germany), founded in 1938 with almost 75 years of
experience in the field of advanced centrifugal pumps for the
Flue Gas Desulphurisation (FGD),
Seawater Desalination Reverse Osmosis (SWRO),
Mining and
Chemical Industry.
Being certified according to ISO 9001 since 1995 we are
offering optimized high-pressure and booster pumps, hard
metal slurry pumps and non-metallic lifetime anti-corrosion-
warrantied pumps.
Our motto “Quality through experience” forms the basis of
our sophisticated product offering. The capabilities
of our company in hydraulic design, combining conservative
approaches and the use of CFD programs, construction,
machining, assembly, testing and commissioning of our
products are highly respected in the industries we serve.
With various sets of hydraulics and ongoing tailor-made
amendments we meet the best duty points for our customers
with the goal of lowest lifecycle costs. Individual solutions
are not an exception but our standard.
Our reputation is based on a sustainable company policy,
focusing on efficiency, reliability, innovation and thorough
customer after-sales service which is established through
worldwide partner arrangements.
DÜCHTING PUMPEN can look back on a large number of
references with very satisfied customers.
1958
2000
1938
4. The Material
Production
Silicon carbide (SiC) as the second hardest material in the world is
mixed with Epoxy resin under technical vacuum and cast into
precision moulds. Fittings are machined with diamond tools. Thanks
to the temperature-controlled casting process, parts of up to
8 tons can be cast.
SIConit® reparing kit with similar characteristics available.
Advantages
Highly wear resistant
Fully corrosion resistant
Easy quality control of castings
Lower noise and vibrations compared to metal parts
Silicon carbide Epoxy resin+
5. Comparison with Metal
In regards of corrosion and abrasions resistance, metals are only
a compromise between conflicting requirements.
covers both perfectly.
Operational Experience
The following pictures were taken from a FGD plant:
DUPLEX stainless steel
after 11.000h of operation after 24.000h of operation
still in operation (85.000h)
DUPLEX stainless steel
Ni-Hard 4
Wear Resistance Corrosion Resistance
Hastelloy
6. MC
Fields of Application
Handling of corrosive and abrasive liquids.
Design
Horizontal or submersible single-stage pump, closed but non-
clogging multi-vane impeller, adjustable gap between suction wear
plate and impeller, ceramic mechanical seal DÜTEC® or double
acting , DIN or ANSI configuration.
Materials of Construction
Non-metallic mineral cast:
Technical Data
DN 32 (1¼") to DN 300 (12")
capacity: up to 1.300 m³/h (5,700 gpm)
pressure: up to 10 bar (145 PSI)
rotating speed: up to 3.600 rpm
7. MCC
Fields of Application
Handling of corrosive and abrasive liquids.
Design
Horizontal or vertical single-stage pump, closed but non-clogging
multi-vane impeller, adjustable gap between suction wear plate
and impeller, ceramic mechanical seal DÜTEC®-C , DIN or ANSI
configuration.
Materials of Construction
Non-metallic mineral cast:
Technical Data
DN 400 (16") to DN 1000 (40")
capacity: up to 20.000 m³/h (88,000 gpm)
pressure: up to 6 bar (87 PSI)
rotating speed: up to 1.000 rpm
Extended Warranties available
8. ROWA-E
Fields of Application
Handling of corrosive and abrasive liquids.
Design
Horizontal or submersible single-stage pump, closed but non-
clogging multi-vane impeller with relief blades or open impeller, up
to 2 wear plates, adjustable gap between suction wear plate and
impeller, ceramic mechanical seal DÜTEC® or double acting , DIN or
ANSI configuration.
Materials of Construction
Pumps are offered in a various range of materials from cast iron up
to SUPER DUPLEX stainless steel.
Technical Data
DN 32 (1¼") to DN 800 (32")
capacity: up to 14.000 m³/h (80,000 gpm)
pressure: up to 16 bar (230 PSI)
rotating speed: up to 3.600 rpm
9. DH
Fields of Application
Handling of corrosive and abrasive solid/liquid mixtures with very
high solids content.
Design
Horizontal, single-stage, heavy spiral-casing pump, closed but
non-clogging multi-vane impeller with relief blades or expeller,
low wear reducing speed by large impeller design, 2 wear plates,
adjustable gap between suction wear plate and impeller, gland
packing , DIN or ANSI configuration.
Materials of Construction
Design allows the use of extremely hard materials.
Technical Data
DN 65 (2½") to DN 400 (16")
capacity: up to 4.000 m³/h (18,000 gpm)
pressure: up to 16 bar (230 PSI)
rotating speed: up to 1.000 rpm
10. ROWA 2S & 4S
Fields of Application
Handling of corrosive and abrasive liquids.
Design
2 or 4 combined horizontal single-stage slurry pumps (ROWA-E
equivalent). Compensation of axial thrust by counter-rotating
impellers, closed but non-clogging multi-vane impellers, mechanical
seal or gland packing , DIN or ANSI configuration.
Materials of Construction
Pumps are offered in a various range of materials up to
SUPER DUPLEX stainless steel.
Technical Data
DN 100 (4") to DN 400 (16")
capacity: up to 2.000 m³/h (9,000 gpm)
pressure: up to 40 bar (580 PSI)
rotating speed: up to 1.800 rpm
11. LHK/MHK/HK
Fields of Application
Handling of corrosive and abrasive liquids up to 5% solids.
Design
Horizontal arrangement, radial split, ring section multistage pump
with radial impellers and single flow entry, axial thrust
compensation by single balanced impellers or by balancing device,
flanges positionable in 90° steps , mechanical seal or gland packing,
DIN or ANSI configuration.
Materials of Construction
Pumps are offered in a various range of materials from cast iron
with bronze impellers up to SUPER DUPLEX stainless steel.
Technical Data
DN 32 (1¼") to DN 300 (12")
capacity: up to 2.160 m³/h (9,500 gpm)
pressure: up to 160 bar (2,300 PSI)
rotating speed: up to 1.800 rpm
12. ROWA-HP
Fields of Application
Handling of corrosive and slightly abrasive liquids.
Design
Horizontal arrangement, radial split, ring section multistage pump
with radial impellers and single flow entry, wear rings in PEEK
material to achieve small clearances, axial thrust compensation by
balancing device, flanges positionable in 90° steps, mechanical seal,
DIN or ANSI configuration.
Materials of Construction
Pumps are offered in a various range of materials up to
SUPER DUPLEX stainless steel.
Technical Data
DN 80 (3¼") to DN 300 (12")
capacity: up to 3.500 m³/h (15,400 gpm)
pressure: up to 100 bar (1,450 PSI)
rotating speed: up to 3.600 rpm
13. ROWA-HPB
Fields of Application
Handling of corrosive and slightly abrasive liquids.
Design
Horizontal single-stage pump, closed multi-vane impeller, wear ring
in PEEK material to achieve small clearances, radial thrust
compensation by double volute casing to reduce shaft deflection
and bearing loads, cartridge mechanical seal, DIN or ANSI
configuration.
Materials of Construction
Pumps are offered in a various range of materials up to
SUPER DUPLEX stainless steel.
Technical Data
DN 65 (2½") to DN 500 (20")
capacity: up to 3.000 m³/h (13,200 gpm)
design pressure: up to 100 bar (1,450 PSI)
rotating speed: up to 3.600 rpm
14. Life-Cycle Costs
We help the customer by offering highest efficiencies together with
most reliable and sustainable installations leading to lowest life-
cycle-costs.
Wide range of different impeller sets for each pump size to meet
customers duty points perfectly
Selection of high quality materials including
High reliability, longest mean time between service (MTBS)
Short down-time when changing typical wear parts
Wear indicator on high pressure pumps
Consultancy
Design
Operation
15. Test Field
Technical Data
Capacity: up to 25.000 m³/h (110,000 gpm)
Pressure: unlimited
Offered Tests: hydrostatic, performance, NPSH, vibration,
bearing temperature, noise level, witnessed tests
Standards: DIN EN ISO 9906, test grade 1, Hydraulic Institute
Power Supply: up to 5 MW
