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DW

DW
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DW

Product catalog summary
Overview
The Grundfos DW range features advanced dewatering pumps designed for efficient raw water pumping in environments such as construction sites, mining pits, and flooded areas. These pumps are part of a comprehensive wastewater and sewage handling product line, offering unique benefits and state-of-the-art technology.
Specifications
The DW pumps range from 0.7 kW to 20 kW, with a maximum flow rate of 82.7 liters per second. Constructed with high-grade materials like chromium steel, nitrile rubber, silicon carbide, and aluminum alloy, they ensure durability and longevity. The pumps include protection devices to prevent overheating and an optional integrated level switch for automatic operation.
Applications
Suitable for dewatering tasks in tunnels, mines, quarries, gravel pits, steel works, fish ponds, and construction sites, these pumps can handle water containing abrasive materials such as sand and clay particles.
Design Features
The DW range includes features like an air valve for water level compartment, integrated on/off switch, electrodes for water level monitoring, and a replaceable nitrile rubber lining. They have a double shaft seal system with an intermediate oil chamber and are designed for both direct-on-line and star-delta starting.
Performance and Control
The pumps incorporate an automatic level control system that adjusts operation based on water levels and are capable of flat suction down to floor level, providing additional operational benefits.
Technical Data
Detailed technical specifications for various pump models include dimensions, maximum installation depth, flow rates, and power requirements. Available in single-phase and three-phase configurations, they offer different discharge connections and material specifications.
Materials and Construction
Constructed with materials like high alloyed cast iron, stainless steel, and nitrile rubber, the pumps ensure resistance to wear and tear. The motor is protected by thermal overload switches and is designed to withstand harsh conditions.
Conclusion
The Grundfos DW range offers reliable and efficient solutions for dewatering needs, with robust construction and advanced features ensuring optimal performance and longevity in demanding environments.
Additional Specifications
Includes detailed specifications and accessory options for various models of three-phase and single-phase pumps, product numbers, voltage requirements, and connection types, along with a comprehensive list of compatible accessories.
Accessories
Includes chains and shackles, coupling and hose connections, flat hoses, and valves and flanges, available in various sizes and dimensions to suit different pump models.
Company Information
Grundfos Holding A/S is committed to innovation and knowledge sharing, providing comprehensive water solutions with a complete product range, emphasizing responsibility, forward-thinking, and innovation as core values.
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Catalog excerpts

DW-1

GRUNDFOS DW RANGE Dewatering pump 0.7 - 20 kW Dewatering pumps for raw water pumping

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DW-2

EFFICIENT STATE-OF-ART DEWATERING PUMPS Unique user benefits The Grundfos DW pumps form part of a complete range of wastewater and sewage handling products. Like all Grundfos products the DW pump series offer unique cus- tomer benefits, making them the natural choice for any job where raw water needs to be pumped - whether from construction sites, mining pits, excavations, or flooded base- Grundfos offers a complete range of highly efficient dewatering pumps incorporating state-of-the-art technology. The range comprises a series of pumps from 0.7kW to 20 kW with a flow rate of 82.7 l/sec. ADVANCED...

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DW-3

Attention to detail enables the DW range to lead the field The Grundfos DW range is designed with attention to every detail to ensure optimum performance and years of trouble-free operation. Air valve for ­ ater level w compartment. Rubber covered handle Electrical control functions are integrated in both direct-on-line and star-delta pump starting. This means only one cable is required to oper­ te the pump. a Integrated on/off switch for automatic start and stop (A), or for continuous pump operation (C). Special low-weight, shock-resistant aluminium alloy stator housing, pump sleeve and top...

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DW-4

the dw range The Grundfos DW pumps are portable submersible pumps with vertical discharge port. They are designed to meet the operating conditions typical of construction sites, excavations, and in the mining industry where the pumped liquid often contains sand, drill cuttings, and similar abrasive particles. DW.50.08.1 – single-phase Motor: 0.8 kW, 2800 rpm Max. power input: 1.3 kW Discharge: R 2 or 2” hose Weight: 13 kg (without cable) (With polypropylene pump sleeve) DW.50.08.3 – three-phase Motor: 0.8 kW, 2800 rpm Max. power input: 1.3 kW Discharge: R 2 or 2” hose Weight: 13 kg (without cable)...

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DW-5

DW.100.110.H – three-phase Motor: 11 kW, 2800 rpm Max. power input: 12.8 kW Discharge: R 4 or 4” hose Weight: 110 kg (without cable) DW.150.110 – three-phase Motor: 11 kW, 2800 rpm Max. power input: 15.0 kW Discharge: R 6 or 6” hose Weight: 110 kg (without cable) DW.100.200.H – three-phase Motor: 20 kW, 2800 rpm Max. power input: 23.0 kW Discharge: R 4 or 4” hose Weight: 148 kg (without cable) DW.150.200 – three-phase Motor: 20 kW, 2800 rpm Max. power input: 25.5 kW Discharge: R 6 or 6” hose Weight: 148 kg (without cable) Automatic level control The Grundfos DW pumps incorporate a highly de­...

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DW-6

Technical data and dimensions D [mm] Pump type * With hose connection 3” Pumps with polypropylene pump sleeve Pump type Example DW .50 .09 .A 3 .H DW .50.09.A3.H Type range Nominal diameter of discharge port Power output P2/100 (W) Operation:A = With automatic level control = For manual operation Version: 1 = Single-phase 3 = Three-phase H = High-head

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DW-7

Material specification Description Stator housing Pump sleeve Discharge Top cover All models*: Aluminium castings. *DW.50.08 has a polypropylene pump sleeve + extruded aluminium stator housing. Motor cable High alloyed cast iron impeller 600HV Steel shaft (1.0533) with welded stainless steel (1.4301) shaft end All other models: Stainless steel (1.4021) DW.50.07 to DW.100.66: • Two single-row heavy duty prelubricated ball bearings Bearings DW.100.110 to DW.150.200 (11 and 20 kW): • Heavy-duty prelubricated ball bearings. • The lower ball bearing is a double-row ball bearing, the upper a single-row...

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DW-8

Pump types and product numbers All pumps are supplied with 20 metres of cable as standard. Other lengths are available on request. Note: Pumps without integrated motor starter for direct on-line or star-delta starting must be connected to an external control box to protect the motor against overcurrent and overload. Pumps with aluminium sleeve Single-phase pumps x x x x x Three-phase pumps x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x Storz coupling half Hose connection Discharge connection Prepared for extrenal control Motor starter* Schuko plug Pump type Electrical...

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DW-9

technical data x x Pumps with polypropylene pump sleeve Single-phase pumps DOL x DOL x DOL x DOL x DOL x DOL x Three-phase pumps DOL x DOL x DOL x DOL x DOL x DOL x Storz coupling half Hose connection Discharge connection Prepared for extrenal control Motor starter* Schuko plug Pump type Electrical connection Product number

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DW-10

Accessories Description Dimensions Chain with 10 m 6m shackle 3m - galvanized Coupling half, Storz coupling Socket for hose connection Rp 2-2” hose Rp 2½-2” hose Rp 2½-3” hose Rp 4-4” hose Rp 6-6” hose 2” 2” 3” 4” 4” 20 m flat hose, incl. Storz couplings Bushing for pipe connection Non-return valve, cast iron, balltype valve Hexagon head screw Isolating valve, brass Threaded flange Gasket, bolts and nuts 10 m flat hose, incl. Storz couplings

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DW-11

Description Non-return valve, cast iron, ball-type valve Pump type Dimensions DN 150 Isolating valve, cast iron 13 DN 100 Pump connector kit. Connectors for two or more DW pumps operating in series Product number Schuko plug CE plug with phase exchanger and on/off switch

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DW-12

Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence Business with an attitude Knowledge The sharing of knowledge, experience and expertise across our global network will always lead our business forward. Innovation Combining the best technology with fresh ways of thinking, we will continue to de­ el­­ even betv op ter pumps, systems, services and standards. Solution With a complete product range, capable of provid­ ng every ­ onceivable water solution, we are i c Grundfos HOLDING A/S Poul Due Jensens Vej 7 DK-8850 Bjerringbro Tel: +45 87 50 14 00 www.grundfos.com...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.