Düchting Pumpen

Type MC Horizontal Centrifugal Pumps

Horizontal single-stage centrifugal pump in back pullout design.
• Pumping of abrasive and corrosive liquids
• All components which are in contact with the liquid are made of SICcast®
• Suction flange: Axial
• Discharge flange: Top (Vertical)
• Closed impeller with three-dimensionally curved vanes
• Impeller is key driven; reverse rotation (e.g. back-flushing) is possible
• Re-adjustable inclined gap between impeller and volute casing to optimize the efficiency and differential pressure after longer operation
• Single acting, metal free mechanical seal DÜTEC® with springs located outside of the liquid (other seal types available)
• Oil-lubricated antifriction bearings
• Back pullout design (the complete rotating assembly can be removed while the casing remains on its position)
• In many applications the wear life of SICcast® greatly exceeds convential materials
• Available with heavy-duty bearing units for extreme applications
• Optimized design ensures easy maintenance and long service life even under difficult conditions

Technical data

Pump Size:
1 1/4″ to 12″ (DN 32 to DN 300)
max. Pressure:
150 PSI (10 bar)
max. Flow:
6600 gpm (1500 m³/h)
Total head:
up to 300 ft (90 m)
Rotating speed:
to 3600 rpm

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Fields of application
Pumping of abrasive and corrosive media
• Flue gas desulfurization
• Incinerators
• Pigment industry
• Chem. industry
• Water treatment
• Seawater desalination plants
• Fertilizer industry / Potash industry

Materials

Spiral casing:
SICcast®
Impeller:
SICcast®
Shaft:
1.4462
Mechanical seal:
Silicon carbide (SiC)

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Type MCC Horizontal Centrifugal Pumps

Horizontal single-stage centrifugal pump in back pullout design.
• Pumping of abrasive and corrosive liquids
• All components which are in contact with the liquid are made of SICcast®
• Suction flange: Axial
• Discharge flange: Top (Tangential)
• Closed impeller with three-dimensionally curved vanes
• Impeller is key driven; reverse rotation (e.g. back-flushing) is possible
• Re-adjustable inclined gap between impeller and wear plate to optimize the efficiency and differential pressure after longer operation
• Single acting, metal free cartridge mechanical seal DÜTEC®-C with springs located outside of the liquid
• Durable, oil-lubricated roller bearings
• Back pullout design (the complete rotating equipment can be disassembled while the casing remains on its position)
• In many applications the wear life of SICcast® greetly exceeds conventional materials
• The patented design allows the production of extremely large pumps at low costs
• Currently, the most advanced and most durable technology for FGD absorber recirculation pumps

Technical data

Pump Size:
16″ to 40″ (DN 400 to DN 1000)
max. Pressure:
87 PSI (6 bar)
max. Flow:
88000 gpm (20000 m³/h)
Total head:
up to 130 ft (40 m)
Rotating speed:
to 1200 rpm

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Fields of application
Pumping abrasive and / or corrosive media.
• Flue gas desulfurization
• Incinerators
• Water treatment
• Seawater desalination

Materials

Spiral casing:
SICcast® EN-GJS-400-15 (GGG40)
Impeller:
SICcast®
Wear plate:
SICcast®
Shaft:
1.0503 (C45)
Shaft sleeve:
1.4301 (1.4462)
Mechanical seal:
Silicon carbide (SiC)

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Type WR Horizontal Centrifugal Pumps

Horizontal single-stage centrifugal pump in back pullout design.
• Pumping of abrasive and corrosive liquids
• Suction flange: axial
• Discharge flange: Top (DN 32 to DN 250 vertical, from DN 300 tangential)
• Closed and open impeller available
• Impeller is keyed to the shaft; reverse rotation (e.g. back-flushing) is possible
• Re-adjustable inclined gap between the impeller and volute casing to optimize the efficiency and differential pressure after prolonged operation
• Shaft sealing by means of DÜTEC® single mechanical seal with external springs (gland packing and other mechanical seals available)
• Durable, oil-lubricated  roller bearings
• Back pullout design (the complete rotating assembly can be removed while the casing remains on its position)
• Optimized design ensures easy maintenance and long service life even under difficult conditions
• Direct or belt driven
• Different arrangements available

Technical data

Pump Size:
1 1/4″ to 32″ (DN 32 to DN 800)
max. Pressure:
230 PSI (16 bar)
max. Flow:
80000 gpm (12000 m³/h)
Total head:
up to 395 ft (120 m)
Rotating speed:
to 3600 rpm

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Fields of application
Pumping of abrasive and corrosive media.
• Flue gas desulfurization (lime / gypsum slurries)
• Aluminum industry (aluminate)
• Cleaning equipment for heat exchangers
• Construction industry (cement-water mixture)
• Potash industry (caustic potash solution, mixed salts/brine)
• incinerators
• Mineral processing and refining

Materials
Available in almost any metal from cast iron to SUPER DUPLEX stainless steel.
The materials are carefully selected depending on the application, the pumped medium and the combinations of materials adapted to the respective conditions of use.

Type WRX Horizontal Centrifugal Pumps

Robust, highly wear-resistant single-stage centrifugal pump with closed impeller and wear plates on suction and bearing side.
• Pumping of media with high sliding wear as well as on mechanical impact by high levels of coarse grain (grain size up to 200 mm)
• The design allows the use of very hard materials => min. 550 HB
• Suction: axial
• Discharge: tangential
• Axially adjustable impeller
• Shaft sealing by stuffing box or mechanical seal
• Various impeller shapes are possible (e.g. 2- or 3-vaned)
• Different arrangements available (e.g. vertical)
• Back pullout design (the complete rotating assembly can be removed while the casing remains on its position)
• Durable, oil or grease lubricated bearings
• Direct or belt driven
• Usage as underwater pump through special assemblies possible
• Counterclockwise rotation design possible

Technical Data

Pump Size:
8″ to 16″ DN 200 to DN 400
max. Pressure:
150 PSI (10 bar to 16 bar)
max. Flow:
22000 gpm (5000 m³/h)
Total head:
up to 245 ft (75 m)
Rotating speed:
to 900 rpm

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Fields of application
Particularly suitable for pumping highly abrasive and corrosive media with fine to very coarse solids.
• Special foundation
• Mechanised tunneling
• Gravel and Sand Industry
• Mining
• Ash Handling
• Furnaces
• Offshore applications
• Traffic tunneling
• Supply tunnelling
• zinc oxide production
• Sugar industry

Materials

Spiral casing:
0.9650 (quenched and tempered)
Impeller:
0.9650 (quenched and tempered)
Wear plates:
0.9650 (quenched and tempered)
Shaft:
1.0503 (C45)

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Standards & Approvals
Manufactured according to DIN / ASME

Type IP Horizontal Centrifugal Pumps

Single stage end-suction, centrifugal pump.
• Horizontal centerline mounted
• Back pullout design (the complete rotating assembly can be removed while the casing remains on its position)
• Continuous operation in industrial processes for pumping clean and corrosive liquids
• Double volute casing for extended bearing and seal life time
• Wear rings in composite material to maintain best efficiency and reliability
• Pump casing design up to 100 bar
• Oil or grease lubricated bearings
• Cartridge mechanical seal, seal plan as per API
• Vertical installation optional available
• Design in accordance with API 610 if specified

Technical Data

Pump Size:
2 1/2″ to 18″ (DN 50 to DN 450)
max. Pressure:
1450 PSI / 210 PSI (100 bar / 15 bar)
max. Flow:
18500 gpm (4200 m³/h)
Total head:
up to 720 ft (220 m)
Rotating speed:
to 3600 rpm

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Fields of application
Suitable for handling of slightly abrasive and corrosive liquids.
• Pressure boosting systems in industrial processes
• Water supply, and water treatment plants
• Seawater desalination plants
• Hot water applications
• Oil & Gas – Applications
• Feed water circulation

Materials
Available in almost any metallic material designs from cast iron to SUPER DUPLEX stainless steel.
The materials are carefully selected depending on the application, the pumped medium and the combinations of materials adapted to the respective conditions of use.

Standards & Approvals
Manufactured according to ISO, DIN and ASME (API 610/ ISO 13709 possible)

Type HPXU & HPXM (V) Horizontal Centrifugal Pumps

Multistage centrifugal pump in ring-section design.
• Flanges positioned at 90 ° increments
• Shaft sealing by stuffing box or mechanical seal
• Axial thrust compensation by balancing device with optical or digital wear indicator for optimized maintenance control
• Designed for 4-pole speed
• Reduced life-cycle costs
• Grease or oil lubrication available
• Tailormade solutions available:
o Pump dimensions can be adapted to customer requirements
o Single or double inlet suction casing available
o Discharge flanges available on intermediate stage casings
o Drive from one or both shaft ends possible
• Closed impeller with three-dimensionally curved blades
• Impeller fixed with fitting key

Technical Data

Pump Size:
1 1/4″ to 16″ (DN 32 to DN 400)
max. Pressure:
2300 PSI (160 bar)
max. Flow:
15000 gpm (3250 m³/h)
Total head:
up to 3940 ft (1200 m)
Rotating speed:
to 3600 rpm

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Materials
Available in almost any metallic material designs from cast iron to SUPER DUPLEX stainless steel.
The materials are carefully selected depending on the application, the pumped medium and the combinations of materials adapted to the respective conditions of use.

Standards & Approvals
Manufactured according to DIN / ASME
Certificates API BB4 610 ISO

Type HPXM Horizontal Centrifugal Pumps

Multistage centrifugal pump in ring-section design.
• Handling of contaminated, chemically neutral or aggressive liquids with up to 10% solids
• Available in almost any metal from cast iron to SUPER DUPLEX stainless steel
• Flanges positioned at 90 ° increments
• Shaft sealing by stuffing box or mechanical seal
• Axial thrust handled by hydrodynamic balance disk with wear indicator
• Manufactured according to DIN / ASME
• Designed for 4-pole drive
• Discharge flanges available on intermediate stage casings
• Power can be input at one or both shaft ends

Technical Data

Nominal width:
??” to ??” (DN 150 to DN 250)
Nominal pressure:
? PSI (64 bar)
Capacity:
max. ???? gpm (1200 m³/h)
Total head:
up to 650 m
Rotating speed:
to 1800 rpm

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Fields of application
Handling of contaminated, chemically neutral or aggressive liquids with up to 10% solids.
• Main water drainage in mining
• In addition to drainage and mine weather cooling in mining
• Pressure boosting systems in industrial processes
• Water supply and water treatment plants
• condensate production
• mineral industry

Materials
Available in almost any metallic material designs from cast iron to SUPER DUPLEX stainless steel.
The materials are carefully selected depending on the application, the pumped medium and the combinations of materials adapted to the respective conditions of use.

Standards & Approvals

Type HPXL (V) Horizontal Centrifugal Pumps

Multistage centrifugal pump in ring-section design.
• Flanges positioned at 90 ° increments
• Shaft sealing by stuffing box or mechanical seal
• Axial thrust compensation by individually balanced impellers
• Designed for 4-pole speed
• Reduced life-cycle costs
• Grease or oil-lubrication available
• Tailormade solutions available:
o Pump dimensions can be adapted to customer requirements
o Single or double inlet suction casing available
o Discharge flanges available on intermediate stage casings
o Drive from one or both shaft ends possible
• Closed impeller with three-dimensionally curved blades
• Impeller fixed with fitting key

Technical Data

Pump Size:
1 1/4″ to 12″ (DN 32 to DN 300)
max. Pressure:
580 PSI (40 bar)
max. Flow:
11000 gpm (2500 m³/h)
Total head:
up to 1300 ft (400 m)
Rotating speed:
to 3600 rpm

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Fields of application
Handling of contaminated, chemically neutral or aggressive liquids with up to 10% solids.
• Main water drainage in mining
• In addition to drainage and mine weather cooling in mining
• Pressure boosting systems in industrial processes
• Water supply and water treatment plants
• Condensate production
• Mineral industry
• Oil & Gas Applications

Materials
Available in almost any metallic material designs from cast iron to SUPER DUPLEX stainless steel.
The materials are carefully selected depending on the application, the pumped medium and the combinations of materials adapted to the respective conditions of use.

Standards & Approvals
Manufactured according to DIN / ASME
Certificates API BB4 610 ISO

Type HPH Horizontal Centrifugal Pumps

Multistage centrifugal pump in ring-section design.
• Pump inlet: axial or radial with flanges positioned at 90° increments
• Discharge flange: radial positioned at 90° increments
• Replacable rings in composite material to maintain best efficiency and reliability
• Shaft sealing by stuffing box or mechanical seal
• Axial thrust compensation by balancing discs, balancing drum or combination of both
• Easy replacement of all wearing parts
• Tailormade solutions available:
o Pump dimensions can be adapted to customer requirements
• Impellers are fixed by fitting key (e.g. backflushing) possible
• Impeller wear rings available
• Pump with one or two connective shaft ends
• Impellers and diffusers are cast by using ceramic moulds to get smooth surfaces for outstanding hydraulic performance

Technical Data

Pump Size:
3″ to 12″ (DN 80 to DN 300)
max. Pressure:
1450 PSI (100 bar)
max. Flow:
15400 gpm (3500 m³/h)
Total head:
up to 3600 ft (1100 m)
Rotating speed:
to 3600 rpm

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Fields of application
Handling of clean or slightly polluted, chemically neutral or aggressive liquids.
• Pressure boosting systems in industrial process
• Water supply, and water treatment
• Seawater desalination
• Condensate production
• Boiler feed systems
• Hot water applications
• Petrochemical applications
• Water Injection

Materials
Carefully selected depending on the application and adapted to the respective conditions.
DÜCHTING PUMPEN offers improved corrosion resistant materials like SUPER DUPLEX stainless steel with Pitting Resistance Equivalent numbers above 40.

Standards & Approvals
Manufactured according to ISO, DIN and ASME (API 610 / ISO 13709) possible

Type MCS Vertical Centrifugal Pumps

Submersible single-stage centrifugal pump
• Pumping of abrasive and corrosive liquids
• All hydraulic components which are in contact with the liquid are made of SICcast®
• Suction flange: Vertical (including suction strainer)
• Discharge flange: Radial
• Closed impeller with three-dimensionally curved vanes
• Single acting mechanical seal
• Moisture sensor in an oil reservoir between pump and motor
• Stainless steel submersible three-phase motor (IP68)
• Optimized design ensures easy maintenance and long service life even under difficult conditions

Technical Data

Pump Size:
1 1/4″ to 6″ (DN 32 to DN 150)
max. Pressure:
150 PSI (10 bar)
max. Flow:
1400 gpm (320 m³/h)
Total head:
up to 295 ft (90 m)
Rotating speed:
to 3600 rpm

Einsatzgebiete
Handling of abrassive and corrosive liquids.
• Flue gas desulfurization
• Incinerators
• Water treatment
• Seawater desalination plants
• Fertilizer industry / Potash industry

Materials

Volute casing:
SICcast®
Impeller:
SICcast®
Shaft:
1.4462
Mechanical seal:
Siliziumkarbid (SIC)

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Type MCV Vertical Centrifugal Pumps

Single-stage vertical centrifugal sleeve-bearing pump.
• Handling of abrasive and corrosive liquids
• Vertical mixed flow pump designed for desalination plants to work as intake pump
• Suitable for a wide flow range
• Suction flange: Vertical
• Discharge flange: radial
SICcast® – inlet housing and diffuser withstand hard particles
• Shaft sealing by a single acting mechanical seal
• Polygon sleeve bearings support long shafts and protect against vibration. Radial bearings made of SiC on SiC
• The modular design makes it possible to produce extremely large pumps at low costs
• Easily disassambled wear plate
• Optimized design to allow material choice

Technical Data

Pump Size:
6″ to 40″ (DN 150 to DN 1000)
max. Pressure:
115 PSI (8 bar)
max. Flow:
55000 gpm (12500 m³/h)
Total head:
up to 180 ft (60 m)
Rotating speed:
up to 1800 rpm

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Fields of application
Handling of abrasive and corrosive media.
• Seawater intake
• Water treatment plants
• Cooling in power plants

Materials
All wetted parts (except shaft) are made of metal free materials to avoid corrosion totally.
Different shaft materials available according to the application requirements.
All hydraulic parts and the Discharge bend are manufactured in SICcast®. Anti-corrosion lifetime guarantee for all SICcast® parts in seawater applications

Type WRS Vertical Centrifugal Pumps

Single-stage vertical centrifugal submersible pump.
• Pumping of abrasive and corrosive liquids
• Available in almost any metal from cast iron to SUPER DUPLEX stainless steel
• Suction flange: Vertical (including suction strainer)
• Discharge flange: Radial
• Closed impeller with three-dimensionally curved vanes
• Re-adjustable inclined gap between impeller and wear plate to optimize the efficiency and the differential pressure after longer operation
• Single acting mechanical seal
• Moisture sensor in an oil reservoir between pump and motor
• Submersible IEC three-phase motor (IP68)
• Optimized design ensures easy maintenance and long service life even under difficult conditions

Technical Data

Pump Size:
1 1/4″ to 6″ (DN 32 to DN 150)
max. Pressure:
150 PSI (10 bar)
max. Flow:
1630 gpm (370 m³/h)
Total head:
up to 300 ft (90 m)
Rotating speed:
up to 3600 rpm

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Fields of application
Handling of abrasive and corrosive media.
• Flue gas desulfurization
• Chem. industry
• Water treatment
• Seawater desalination plants
• Fertilizer industry
• Potash industry

Materials

Volute casing:
Duplex stainless steel
Impeller:
Duplex stainless steel
Wear plate:
Duplex stainless steel
Shaft:
1.4462
Mechanical seal:
Silicon carbide (SiC)

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Type WRV Vertical Centrifugal Pumps

Vertical single-stage centrifugal pump in semi-submerged design.
• End-suction type slurry pump
• Pumping of abrasive and corrosive media
• Discharge flange: DN 32 to DN 250 radial, from DN 300 tangential
• Closed and open impeller available
• Impeller is fixed by fitting key; reverse rotation (e.g. back-flushing) is possible
• Re-adjustable inclined gap between the impeller and volute to optimize the efficiency and differential pressure after prolonged operation
• Grease-lubricated, maintenance-free bearings
• Customized immersion depth possible
• Optimized design ensures easy maintenance and long service life even under difficult conditions
• Direct or belt driven design

Technical Data

Pump Size:
1 1/4″ to 32″ (DN 32 to DN 400)
max. Pressure:
230 PSI (16 bar)
max. Flow:
17600 gpm (4000 m³/h)
Total head:
up to 395 ft (120 m)
Rotating speed:
up to 3600 rpm

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Fields of application
Handling of abrasive and corrosive media.
• Flue gas desulfurization (lime / gypsum slurries)
• Cleaning equipment for heat exchanger
• Construction industry (cement-water mixture)
• Potash industry (caustic potash solution, mixed salts/brine)
• Fertilizer Industry
• Mineral processing and refining

Materials

Available in almost any metal from cast iron to SUPER DUPLEX stainless steel.
The materials are carefully selected depending on the application, the pumped medium and the combinations of materials adapted to the respective conditions of use.