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Grundfos Dosing
Lechintech PTY (Ltd) are the authorised service partners for Grundfos Dosing and Disinfection for the Kwa-Zulu Natal region, and offer the full range of dry powder make down, liquid and gas dosing equipment, including service and installation options.
Smart Digital Dosing Pumps up to 200l/hr
Covering flow rates up to 200 liters an hour, and output pressure ratings up to 16 bar, the Smart Digital range delivers reliable, safe, and cost-effective dosing in any application across a wide selection of businesses including water treatment, with industry-leading user friendliness and flexibility. And the advanced monitoring and self-analysis features offered by several control variants provide intelligent process control that looks beyond the pump and keeps an eye on the entire system for you.
DDA: High-end solution for complex and demanding applications
- AutoFlowAdapt: automatically adapts measured flow to attain target flow
- Auto-deaeration during pump standby
- Flexible Fieldbus control
- Turn-down ratio 1:3000 ( DDA 7.5-16) or 1:1000 with constant 100% stroke length
DDC: Optimum solution for common applications
- Standard operation modes, e.g. pulse and analog
- Turn down ratio 1:1000
- More than 25 languages
- Graphical LC display backlit in different colours
DDE: A cost effective Digital Dosing solution
- Two control options: manual control 0.1-100%, pulse in % of stroke volume
- Turn down ratio 1:1000
- Always 100% suction stroke
- External stop and empty tank alarm
General-purpose high-performance dosing pumps – DME digital diaphragm dosing pumps up to 940l/h
The Grundfos DME Digital dosing pumps combine perfect precision with user-friendliness, covering large dosing quantities up to 940l/h with few variants.
- Two pump variants: 375l/hr at 10 bar, or 940l/hr at 4 bar.
- Turn-down ratio 1:800 with constant 100% stroke length.
- Adjustable slow mode for dosing high viscosity liquids (up to 3000 mPas)
Application Areas
Chemical treatment and conditioning of water
- Disinfection and pH adjustment
- Drinking water, process water and waste water
- Pulp and paper, boiler feed
- Coagulation, flocculation, precipitation
Mechanical diaphragm dosing pumps- DMX “Standard range” up to 2 x 4000l/hr and “Pre-selected range” up to 765l/hr
The Grundfos DMX range has proven its worth in dosing applications worldwide. With their robust diaphragm-based design and high-quality motors, DMX pumps require minimum maintenance and are the best choice for many dosing applications. The DMX range is highly versatile: it covers a wide flow range and offers a variety of dosing head sizes, materials and accessories.
- Capacity from 0.4 to 2 x 4000 l/hr and up to 10 bar.
- Double –head versions increase flexibility or dosing flow rate.
- Available with ATEX design – certified for EX classified zones
Application Areas
Disinfection, coagulation, flocculation, pH correction, etc in:
- Drinking water treatment
- Cleaning water treatment
- Wastewater treatment
- Cooling Tower water treatment
- Pulp and Paper industry
- Food and Beverage industry
Hydraulic piston diaphragm dosing pumps – DMH dosing pumps up to 2 x 1 00l/hr and up to 200 bar
The Grundfos DMH range is a series of extremely strong, robust pumps for applications requiring reliable dosing and high-pressure capability, such as process engineering. The range is highly versatile: it covers a wide flow range and offers a variety of dosing head sizes, materials and accessories.
- Available in simplex and duplex versions.
- Integrated pressure relief valve and active diaphragm protection system.
- Available with ATEX design – certified for EX classified zones and API 675 certificate
- Double diaphragm design and breakage monitoring for maximum safety.
Application Areas
- Power Plants
- Drinking water treatment
- Treatment of Process Water
- Petrochemical industry, refinery
- High pressure boiler feed water treatment
- EX zones / dosing of flammable liquids
Dosing pump accessories
Grundfos offers a comprehensive range of accessories covering every requirement when dosing with Grundfos pumps. The range includes:
- Dosing tanks
- Pressure relief valves
- Cables & Plugs
- Foot valves & suction lances
- Injection units
- Hand and electric mixers
- Multifunction valves
- Hoses
- Pulsation dampeners
- Pressure loading valves
- Connectors
- Adaptots
Vaccuperm chlorine gas system
Chlorine – the no 1. Disinfectant worldwide
The Grundfos Vaccuperm gas dosing systems work in accordance with the tried-and-tested full-vacuum principle, which regulates the addition of gaseous chlorine reliably and precisely. The systems are available as compact units of up to 4kg/hr for installation on cylinders and as fully automatic high performance systems of up to 200kg/hr.
Optional Conex ® DIA-G gas warning system to monitor ambient air for admissible gas concentration, and DID measurement and control system to measure and control the residual free chlorine in the water.
Vaccuperm: chlorine gas dosing systems
- Systems for direct installation on chlorine gas cylinders or drums or for installation in header lines.
- Fully automated systems – wall or floor mounted.
- Precise regulation and dosing of gaseous chlorine.
- Simple handling and user-friendly design.
- Complete range of accessories on request – injectors, automatic change over units, evaporators, liquid traps and gas warning systems.
Application Areas
- Municipal waterworks
- Independent water suppliers
- Industrial waste water plants
Oxiperm: chlorine dioxide systems
Chlorine dioxide – effective against legionella and biofilm
Chlorine dioxide is an extremely long-lasting and effective disinfectant. Even relatively small quantities of chlorine dioxide display high disinfecting properties against all critical and chlorine-resistant germs, almost regardless of pH value. Chlorine dioxide can be used to successfully reduce the formation of biofilm in water pipes, which removes the life source for harmful germs such as legionella.
Oxiperm: compact, effective and cost-effective disinfection
- Compact system to be installed on confined spaces.
- On-site preparation of chlorine dioxide.
- Complete chemical reaction within a minimum of time.
- Low operating costs and low consumption of chemicals.
Application Areas
- Industrial process water like brewing water, bottle washing and CIP systems
- Cooling Towers
- Municipal waterworks
Measuring and control solutions
Monitoring of typical water quality parameters as well as precise control of disinfectant addition or pH adjustment is essential for many water treatment processes. Grundfos offers two ranges: The DIT hand-held photometer, and the online measuring and control system DIS for full integration with digital communication and data logging.
DID: fully digital pre-assembled compact measuring station
The new Grundfos by S::CAN DID systems are the perfect combination of S::CAN state of the art digital sensor technology and Grundfos experience in PID controlling of dosing and disinfection processes. DID systems are designed to match Grundfos dosing pumps, gas dosing systems and systems for the generation and dosing of chlorine dioxide and hypochlorite.
DID systems are available as compact systems with bypass flow cell or as kits for applications with tank-immersed sensors. The DID is easy to set up due to the pre-assembled and pre-calibrated configurations. Installation is easy due to the Fieldbus-based communication with both system control and sensors. The control unit CU382 included in the DID offers a wide variety of set up options for the freely assignable digital and analog in- and outputs as well as for the controller functions.
DIT hand photometer: professional analysis tool
Total reliability and precision are always needed to control water quality for chemical water treatment. Our portable, optoelectronic DIT measuring device offers very high measuring accuracy and reproducibility for up to 14 parameters including chlorine (free, combined, total), chlorine dioxide and pH. It is perfect for calibration of the disinfectant sensors used in DID.
DID systems features the following:
- Automatic setting of water flow and detection of missing water flow in systems with flow cell.
- Probe carrier included in systems for tank installation.
- Designed for extra-long maintenance intervals.
- Pre-calibrated sensors.
- Temperature compensation included for all sensors.
- One sensor variant per parameter for all applications and measuring ranges )pH, ORP, conductivity sensors).
Application Areas
- Drinking water treatment: pH control for dosing acids and alkalis, monitoring & control of residual chlorine
- Industrial process water and waste water treatment: pH control for dosing acids and alkalis and control of chlorine, chlorine dioxide or ozone
- Food and beverages: disinfection in filling tanks and CIP applications
- Swimming pool water treatment: pH control for doing acids and alkalis, monitoring & control of residual chlorine.
Grundfos Authorised Partner – Dosing & Disinfection
We specialize in dosing systems for water and wastewater treatment, pulp and paper and sugar industries. For Grundfos Dosing and Disinfection product sales and service, please complete the online service request.
