Portfolio

Quality through Experience

Portfolio Brochure

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

Today (Sprockhövel) Today (Witten)

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 +

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

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

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

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

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

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

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

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

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

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

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

DÜCHTING PUMPEN Maschinenfabrik GmbH & Co. KG, Wilhelm-Düchting-Str. 22, 58453 Witten, Germany, +49 2302 969 0, [email protected]