The Grundfos DW pumps are robust, portable submersible pumps with a vertical discharge port.
Available with motors from 0.8 to 20 kW, they are designed to handle dewatering at construction sites, at excavation sites, in building drainage and in similar applications where there is a need to pump raw water or/and at high pressure.
DW main parts are made of aluminium in order for them to be as light as possible. This factor, in combination with the compact design and the high-pressure capabilities, make DW pumps portable and easy to handle. The semi-open type impeller is made of high-chrome stainless steel (550HB) in order to increase wear resistance. DW.50.08 (only) has apolypropylene motor housing.
Applications
DW pumps are excellent for dewatering and draining jobs. The portable design, wear resistant parts and high pressure capabilities ensure the reliability, sustained performance, user-friendliness and ease of servicing that are necessary in demanding dewatering applications at sites such as:
- Construction sites
- Excavations
- Tunnels
- Steel works
- Fish ponds
- Underground parking drainage Industrial drainage pits.
Features and benefits
- Durability
- Portability
- User-friendliness
- Ease of servicing High pressure capabilities Control options.
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The Grundfos HS horizontal split case pump is a single-stage, non-self-priming, between bearing, centrifugal volute pump. The axially split design allows easy removal of the top casing and access to the pump components (bearings, wear rings, impeller, and shaft seal) without disturbing the motor or pipework.
The independent bearing housing allows for ease of maintenance without removing the top casing. The double volute design reduces the radial load on the shaft, extending component life, minimising vibration and providing quiet operation.
The HS pump also offers high pump efficiencies throughout the range. High energy efficiency along with long pump life and easy maintenance add up to low life-cycle costs.
The HS pump is available in three configurations – pump with motor and baseframe, pump with baseframe, and bare shaft pump only.
The HS pump is ideal for custom applications and is available in a wide range of variants. The high efficiency and low life cycle costs make the HS ideal for any commercial building, water utility or industrial project.
Applications
Grundfos HS horizontal split case pumps are typically used in these applications:
- Air-conditioning/heating systems
- Public water supply
- District cooling/heating plants
- Cooling systems
- Public waterworks
- Process cooling
- Irrigation.
Features and benefits
- Easy to service: split case design
- Double suction minimises axial load,which extends the life of the wear rings, shaft seals and bearings
- Double volute reduces radial forces and minimises noise and vibration
- Independent bearing housing design allows access to the pump components without removing the top half of the casing
- High energy efficiency
- Low life-cycle costs
- Many product variants available.
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Unilift KP pumps are submersible drainage pumps suitable for both temporary and permanent free-standing installation. They can be used for pumping drain water or grey wastewater. They are also suitable for installation in collecting tanks.
The Unilift KP is a single-stage drainage pump with semi-open impeller, designed for the pumping of drain water and grey wastewater. All Unilift KP pumps can be supplied with or without a level switch. The variants are designated as A, AV or M, for automatic or manual operation. The Unilift KP-AV variant for narrow pits is supplied with a non-return flap valve for installation in the outlet. The strainer is clipped onto the pump housing.
The Unilift KP. Single-stage, submersible, stainless steel drainage pump in a robust design with upward-pointing discharge port positioned on the top of the pump.The outer casing is made in one piece. The mains cable and the cable of the level switch are both connected to a single, vulcanized, water-tight plug which is inserted in a socket on the hermetically-sealed stator housing. The motor is a single- or three-phase synchronous canned motor with liquid-filled rotor chamber and water-lubricated bearings.
The motor is cooled by the pumped liquid flowing around it.
- Enclosure class: IP 68
- Insulation class: F
The motor incorporates automatic overload protection which cuts out the motor in the event of overload. When it has cooled to normal temperature, the motor restarts automatically.
Applications
The Grundfos Unilift KP pumps are designed for the pumping of:
- Water and rainwater in horticulture
- Water from rivers and lakes
- Rainwater, drainage water and water from flooding
- Water for filling/emptying containers, ponds, tanks, etc.
- Effluents from showers, washing machines and sinks below sewer level
- Pool water
- Ditch drainage water
- Groundwater (lowering applications)
- Domestic effluents from septic and sludge-treating systems
- Effluents from viaducts, underpasses, etc.
- Drainage water from garage sprinkler systems.
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Grundfos’ new range of GHP (Grundfos Hygienic self-Priming) pumps takes efficiency and durability to new levels in sanitary processes.
The pumps are based on the well-known HILGE technology and are further optimised to offer reliable operation even under the tough conditions encountered in cleaning processes.
The single-stage self-priming GHP pumps combine the best of the F&B-HYGIA end-suction pumps with the reliable HILGE technology. The result is an optimised pump range that comes with increased efficiency compared to traditional side-channel pumps and can be counted on for long operational life.
One pump – More applications
Due to the robust construction of the new GHP pumps they are able to handle liquids with a high content of air as is the case in CIP return systems.
In effect, this means that the same pump can be used for product conveyance as well as for the cleaning processes. Compared to side-channel pumps, GHP pumps are also less sensitive to handling products containing particles.
Low noise operation
The GHP pumps feature a new, unique hydraulic technology that allows the impeller to be adjusted to accommodate exact duty-point requirements.
This translates into a noise level significantly lower than compared to traditional side-channel pumps.
Specially designed for sanitary applications
The all-stainless steel GHP pumps have been specially designed for trouble-free operation in sanitary processes such as:
- Cleaning processes (CIP return)
- Evacuation of tanks and pipes
- Pumping liquids with a high gas content
- Pumping liquids in Food and Beverage industries.
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Grundfos RC pumps are used for the circulation of liquid refrigerants in refrigeration systems.
The RC pumps have been designed and optimised for use with CO2 as a refrigerant, but can also be used with NH3 (Ammonia) and selected HFCs
The low required NPSH and the fact that no traditional loss-generating protective devices are needed can help system designers to reduce the dimensions and cost of the system. The RC pumps have an innovative design in stainless steel which makes specially suited for use with high pressure refrigerants (CO2) – the pump has only one seal between the refrigerant and ambient sides. A version with welded connections eliminates the use of counter flanges and possible leakage in flange connections.
Applications
Grundfos RC pumps are designed for the circulation of liquid refrigerant in refrigeration systems.
Features and benefits
- Barrel-type, semi-hermetic, high-pressure design
- Multistage centrifugal pump
- Canned motor (no shaft seals)
- High energy efficiency
- Wide range for variable speed capacity control
- Low NPSHR and robust to vapour bubbles in inlet
- Installation and service friendly
- Compact and low weight.
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The Grundfos range of recirculation pumps is the product of decades of engineering experience. Created to handle large flows with low heads, the SRP models are equally suitable for wastewater treatment plants and flood control.
SRP units come in three main variants – DN 300, 500 or 800 mm, fitted with motors from 0.8 to 24 kW. The units share many features with the AMG and AFG gear-driven mixers and flowmakers, making them instantly familiar to service staff and facilitating easy maintenance.
Recent developments include a triple sealing system for maximum protection of the mechanical shaft seal and a bracket that facilitates very easy installation.
Applications
The pumps are suitable for the following applications:
- Re-circulation of sludge within sewage treatment plants
- Storm water pumping.
Features and benefits
- High efficiency stainless steel propeller
- Electronic leak sensor in gearbox/shaft seal housing
- Wide performance range
- Strong axial gear in slim design for high hydrodynamic efficiency
- Integrated overload and overheat protection
- Good self-cleaning capabilities.
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The JP pump is a self-priming, single-stage centrifugal pump with axial suction port and radial discharge port, G 1 or Rp 1. The pump has a built-in ejector with guide vanes for optimum self-priming properties.
JP pumps are available in two material variants.
Material variant A: Cover plate, motor stool and base plate in one unit. The handle is fitted crosswise. Both elements are made of composite material.
Material variant B: Stainless steel cover plate, aluminium motor stool and stainless steel base plate, all separate parts.
The robust design makes the pump suitable for fixed installation. The custom-built composite handle is fitted lengthwise.
The pump is directly coupled to a special fan-cooled asynchronous Grundfos motor that is adapted to the pump performance Single-phase motors have a built-in thermal switch and require no additional motor protection Three-phase motors require external motor protection
Applications
Built for a long, trouble-free working life, the small and handy Grundfos jet pump is suitable for a wide variety of water supply and transfer duties in home, garden and hobby applications as well as in agriculture, horticulture and small-scale service industries.
When used in combination with a pressure control or tank, the JP pump is ideal for small water supply systems.
Features and benefits
- Self-priming
- Stable operation even if there is air in the liquid
- Ideal for small water supply systems
- Compact and handy.
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