grundfos pump

Grundfos - Split Case pump

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 Pump

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 Pump

  • 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.

Grundfos pumps - Digital Dosing pumps

Overview for Grundfos pumps – Dosing pumps

Grundfos DME Digital Dosing pumps combine perfect precision with user-friendliness, covering large dosing quantities in the range from 60 l/h to 940 l/h with few variants.

Digital Dosing Pumps

The use of stepper motor/EC drives optimizes control of the stroke speed and makes it extremely accurate. The duration of each pressure stroke varies according to the flow setting. The suction stroke time always remains constant but can be lengthened using the anti-cavitation function and thus adapted to the relevant needs. This way suction always takes place with the full stroke volume. This results in continuous dosing and lower pulsation in the dosing system – important factors in ensuring smooth pumping of outgassing media and in installations requiring longer suction lines.

The DME pumps range has all the benefits of the highly acclaimed smaller Digital Dosing range, making accurate dosing easier than ever.

Precise Pumps and easy setting Pumps

The operator can easily install and set the pumps to discharge exactly the quantity of dosing liquid required in the application. In the display, the setting of the pumps is read out directly in ml/h or l/h, pulse or batch. The operation mode is easily identified by means of icons.

Pumps Turndown ratio 1:800

With a turndown ratio ten times better than that of traditional equipment, the DME Digital Dosing pumps offer maximum flexibility and accuracy.

Turndown of the suction stroke to 75 %, 50 % or 25 % of the maximum speed ensures optimal priming pumps and displacement of even the most difficult liquids.

Unique technology Pumps

A unique drive technology and microprocessor control make sure that liquids are dosed precisely and with low pulsation, even when the pumps is operating with high viscosity or degassing liquids. Instead of the conventional stroke length adjustment, the capacity of the DME is regulated by automatic adjustment of the motor speed during the discharge stroke, and by fixed suction stroke speed. This guarantees optimal and uniform mixing.

Fieldbus Pumps communication

Available with Profibus interface to supply performance data and status information for quality control, preventive maintenance and future reference.

Pumps Overload protection

Built-in overload protection monitors the counter-pressure of the pumps and protects it against too high pressure loads.

Switch-mode pumps power supply

The switch-mode power supply makes sure that Grundfos DME Digital Dosing pumps can be used worldwide within the 100-240 VAC – 50/60 Hz range.

Several material variant Pumps

The dosing heads of DME pumps are available in stainless steel, PVDF, and environmentally friendly, cost-efficient polypropylene.

Pumps Processes:

Dosing pumps of biocides and chemicals, belt lubricant for conveyor equipment diverse range of acids, lyes, flocculation and coagulation agents, cationic and anionic polymers with very different viscosities, precipitating agents and disinfectants, CIP applications

Applications Pumps

  • Pulp and paper industry
  • Textile industry
  • Food and beverage industry
  • Industrial process water and waste water treatment
  • Drinking water treatment

 

Features and Benfits Pumps

  • Digital Dosing Pumps
  • Ratio 1:800
  • High precision – unique technology
  • Dosing of high viscosity media
  • Robustness and reliability

Grundfos - Fire Systems

fire-pump-grundfosOverview fire systems by Grundfos pump

NBF is an end-suction pump made for fire sprinkler pump applications. NBF is a close-coupled type and NKF is a long-coupled type.

The NKF fire system is an NBF or NKF end-suction pump integrated with a coupling and a driver, which may be an electric motor or a diesel engine, assembled on a base frame.

Electric pump types can be ordered as a COMPACT model (inclusive of a controller integrated onto the baseframe).

Diesel-driven NKF. A controller always forms a part of the system.

Materials Pump

The pump materials are in compliance with EN 12845 and prEN12259-12:

  • Impeller and wear rings are made of bronze
  • Wet parts such as shaft, washers and nuts are made of stainless steel
  • Castings are made of cast iron.

Controller Pump

Grundfos offers a complete, factory-assembled controller in a steel plate cabinet, suitable for wall mounting or to install free-standing. The controller pump complies with the EN 12845 standard. The controller for diesel-powered pump is always mounted on the base frame.

Electric motor

The electric motor is an MG or MMG motor complying with local standards for electric motors. As from 16 July 2011, the motors used in Europe will be IE2 = EFF 1 motors.

Diesel engine

The diesel engine can operate continuously at full load at site elevation with rated output in accordance with ISO 3046-1:1986. The pump reaches full operational speed within 15 seconds; the engine is capable of starting at a room temperature of 5 °C.

Each complete engine pump unit is tested on the manufacturer’s test bed for at least 1.5 hours at rated flow rate, and the result recorded on the test certificate.

Applications Pump

The Grundfos fire pump units are typically used in fire-fighting applications for supplying water to fire-hose reels, fire hydrants or sprinkler systems.

Features and benefits Pump

  • Pump are made according to EN12845 and PrEN12259-12
  • Electric or diesel powered
  • Designed pump for superior functionality and performance reliability
  • Simple installation and easy maintenance
  • Compact design Pump
  • Customised and reliable solutions
  • Widest range from one supplier.

Grundfos Pump - NK, NKG, NKE, NKGE

Grundfos NK/NKG pumps are used in water supply, industrial pressure boosting, industrial liquid transfer, HVAC (heating, ventilation and air-conditioning), irrigation and process industries.
Grundfos end-suction pumps are multi-purpose pumps suitable for a variety of different applications requiring reliable and cost-efficient supply. End-suction pumps are used in five main areas of application: water supply, industrial pressure boosting, industrial liquid transfer, HVAC (heating, ventilation and air-conditioning), and irrigation.

The pumps are all non-self-priming, single-stage, centrifugal volute pumps with axial suction port, radial discharge port and horizontal shaft. The Grundfos NK/NKG range comprises a complete series of long-coupled pumps that comply fully with either EN733 or ISO2858. The pumps are of the back pull-out design, enabling removal of the motor, coupling, bearing bracket and impeller without disturbing the pumps housing or pipework. Even the largest pumps can thus be serviced by one person with a crane. The ISO2858 range of pumps are available with a bearing life of 100,000 hours, and can be fitted with double seals. They available in a stainless steel version as an option.

Applications

Grundfos offers a virtually limitless range of long-coupled (NK) end-suction pumps. Their sturdiness and reliability make them ideal for use in demanding environments such as the following:

Grundfos-NK, NKG, NKE, NKGE-pump

  • District heating plants
  • Heating systems for blocks of flats
  • Air-conditioning systems
  • Cooling systems
  • Wash down systems
  • Other industrial systems.

 

Features and benefits

  • Optimised hydraulics in housing and impeller = unimpeded liquid flow
  • O-ring seal between pump housing and cover = no risk of leakage
  • Housing, impeller and wear ring in different materials = improved corrosion resistance, no sticking elements
  • Back pull-out design for easy dismantling for service
  • Pump is electro-coated to increase corrosion resistance
  • Available with IE1, IE2 and IE3  motors
  • PN 10/16 and 25 bar
  • Temperatures up to 180 °C
  • Available in a number of shaft seal and material variants.