Grundfos Metering Pumps

Flows: .0007 to 2.0 gph at 232 psi | .0031 to 3.1 gph at 150 psi | .0045 to 4.5 gph at 100 psi | .008 to 8.0 gph at 60 psi.

The DDA model is the pump for complex and demanding applications where the focus is on maximum process reliability. In addition to an extended capacity range and a turn-down ratio of up to 1:3000, it boasts Flow Control, pressure monitoring, Auto Flow Adapt and integrated flow measurement. The package for industrial applications is rounded off by additional operating modes such as a week dosing timer and new functions such as auto deaeration.

DDA/DDE Flows: 0.02 to 15.8 gph at 145 psi | 0.04 to 32 gph at 100 psi | 0.066 to 52.8 gph at 58 psi

Accurate dosing of chemicals is a crucial part of production processes in many different businesses. From drinking water and wastewater treatment to industrial processing in the pharmaceutical, chemical, and food & beverage industries, dosing exactly the right amount of chemicals is important in order to reach process targets, and in order to lower operation costs while ensuring process safety and reliability.

Intelligent dosing pumps with high technology drive and adjustment mechanisms represent the ideal solution for increasingly complex dosing. They make life easier for users by keeping processes running precisely, reliably and cost-effectively.

Flows: .0015 to 1.5 gph at 150 psi | .0024 to 2.4 gph at 100 psi | .004 to 4.0 gph at 60 psi

The DDC impresses with features such as simple, intuitive click-wheel operation and a graphic LC display in more than 25 languages. What’s more, all standard modes of operation and inputs/outputs such as analog control or output relay can be integrated into control systems. This pump is suitable for universal use thanks to highlights including the SlowMode (anti-cavitation) function for highly viscous media and the straightforward calibration mode.

Flows: .0015 to 1.5 gph at 150 psi | .004 to 4.0 gph @ 60 psi

Low cost option for stepper motor driven metering pump.
1:1000 turndown for smooth, continuous dosing and minimized pulsation.
Logarithmic scale on control knob that adjusts the feedrate from 0.1-100 %.

DDE B Basic manual control
DDE P B + pulse control
DDE PR P + relay output

Disinfection
pH regulation
CIP
Dosing of chemicals and biocides
Precipitation and flocculation
Filtration
Reverse osmosis

DME 60-10
0.02 to 15.9 GPH @ 145 PSI

DME 150-4
0.05 to 39.6 GPH @ 58 PSI

DME 375-10
0.12 to 99.1 GPH @ 145 PSI

DME 940-4
0.31 to 248.3 GPH @ 58 PSI

1:800 turndown ratio, +/- 1% repeatable accuracy through entire adjustable range
Mircroprocessor controlled variable speed motor (1×100-240V, 50/60Hz)
Back lit display, precise easy setting in GPH (l/hr)
Simple calibration mode
Anti-Cavitation (slow mode) for viscous fluids
Priming button
Overload protection
Optional flow verification and leak detection

Material options:
Pump head – PVDF, Polypropylene, 316SS
Gaskets – FKM, EPDM, PTFE

Control variants:
DME B – Basic manual control
DME AR – Automatic control + alarm relay
DME AP – AR + Profibus

Processes:
Dosing of biocides and chemicals, belt lubricant for conveyor equipment diverse range of acids, lyes, flocculation and coagulation agents, cationic and anionic polymers, precipitating agents and disinfectants, CIP applications

1:800 turndown ratio, +/- 1% repeatable accuracy through entire adjustable range
Mircroprocessor controlled variable speed motor (1×100-240V, 50/60Hz)
Back lit display, precise  easy setting in GPH (l/hr)
Simple calibration mode
Anti-Cavitation (slow mode) for viscous fluids
Priming mode
Double PTFE diaphragm
Optional flow verification and leak detection
Feed rate setting range: (+/-1% repeatable accuracy through entire adjustable range)

DDI 60-10 0.02 to 15.9 GPH @ 145 PSI
DDI 150-4 0.05 to 39.6 GPH @ 58 PSI

Material options:
Pump head PVC, PVDF, Polypropylene, 316SS
Gaskets FKM, EPDM, PTFE
Control variants:
DDI AR Automatic control + alarm relay
DDI AF AR + Flow monitor
DDI AP AR + Profibus
DDI APF AP + Flow monitor

Processes:
Dosing of biocides and chemicals, belt lubricant for conveyor equipment diverse range of acids, lyes, flocculation and coagulation agents, cationic and anionic polymers, precipitating agents and disinfectants, CIP applications

Repeatable accuracy:  +/- 1.5%
Turndown:  1:10 with stroke length adjustments, not including frequency control.

Performance range: 1.3 to 2 x 166.4 GPH (up to 630 l/hr)
Max pressure:  36 to 232 PSI  (see technical data)

• Manual or 4-20mA stroke length control
• Duplex option for doubled capacity on DMX 226
• Standard diaphragm protection system on all pumps
• Integrated frequency controller (4-20mA input/output, pluse, remote start/stop – DMX AR)
• Diaphragm leak sensor
• Internal relief valve
• Stroke sensor
• Optional explosion proof motors on DMX 226

Material options:
Liquid end  –  PVC, PVDF, Polypropylene, 316SS
Gaskets  –  FKM, EPDM, PTFE

Control variants:
DMX B  – Basic manual control
(Or remote control with a variable frequency drive)

DMX AR  –  Automatic frequency control + alarm relay

DMX AT5  –  Electric actuator with servomotor – Automatic (4-20mA) stroke length control

Processes:
Disinfection, coagulation, flocculation, Boiler feed water, cooling and process water treatment, raw water purification, chemicals for ion-exchangers, supplementary water treatment, effluent water neutralization.  Dosing of ammonia, hydrazine, phosphates in high-pressure areas (boiler feed water), lubricant dosing, corrosion inhibition, antiscalants, additives & catalysts, odor control, dosing of flammable liquids.

Robust design
Repeatable accuracy: +/- 1%
Turndown: 1:10 with stroke length adjustments, not including frequency control.

Performance range:
0.07 to 2 x 278 GPH (up to 1052 l/hr)

Max pressure:
145 to 2900 PSI (see technical data)

Manual or 4-20mA stroke length control
Duplex option for doubled capacity
Standard diaphragm protection system on all pumps
Integrated frequency controller on select sizes (4-20mA input/output, pluse, remote start/stop – DMH AR)
Double diaphragm leak detection
Internal relief valve
Optional explosion proof motors
API 675 option (contact Grundfos for details)

Material options:
Liquid end
PVC
PVDF
Polypropylene, 316SS,
Hastelloy C

Gaskets:
FKM,
EPDM
PTFE

Control variants:
DMH-B
Basic manual control (Or remote control with a variable frequency drive)
DMH-AR
Automatic frequency control + alarm relay
DMH-AT5
Electric actuator with servomotor – Automatic (4-20mA) stroke length control

Processes:
Boiler feed water
cooling and process water treatment
raw water purification
chemicals for ion-exchangers
supplementary water treatment
effluent water neutralization
dosing of ammonia
hydrazine
phosphates in high-pressure areas (boiler feed water)
lubricant dosing
corrosion inhibition
antiscalants
additives & catalysts
odor control
dosing of flammable liquids

Monitoring of typical water quality parameters as well as precise control of disinfectant addition or pH adjustment is essential for many water treatment processes. Bus interface as well as data logging functionalities and intuitive user interface are a must for M&C today.

The new Grundfos by s::can DID systems are the perfect combination of s::can’s state-of-the-art digital sensor technology and Grundfos’ experience in PID controlling of dosing and disinfection processes. DID systems are designed to match perfectly with Grundfos dosing pumps, gas dosing systems as well as systems for the generation and dosing of chlorine dioxide and hypochlorite.

Characteristics and main features
DID systems are available as pre-assembled systems with bypass flow cell or as kits for applications with tank-immersed sensors.
Variants with bypass flow cell are intended for monitoring and control of disinfectants, pH, ORP, conductivity and temperature. The water flow through the cell is kept at an appropriate level by a flow restrictor. Lack of water is detected by a flow switch and leads to an alarm. A shut-off ball valve and a sampling cock complete the hydraulic installation, which is compatible with Grundfos standard hoses.
System configurations for tank immersion are available with up to 2 sensors for pH, ORP and conductivity, and always include temperature measurement. These variants allow measurement of water parameters directly in the tank or basin without the need for a bypass line and flow cell. The control unit can either be fixed directly at a wall or back plate, or mounted on a DIN rail in a cabinet.

CU 382 control unit

• Intuitive plain-text operation
• Data logger functionality
• Up to 3 controller outputs, freely assignable
• Modbus included
• Modbus sensor interface
• Data interchange with USB stick
• Wide-range power supply

Sensors

• Modbus interface to CU 382 control unit
• Onboard storage of calibration data
• Temperature compensation included for all sensors
• Long service intervals
• Pre-calibrated (pH, ORP, conductivity sensor)
• 1-2 sensor variants per parameter for all applications and measuring ranges
• Diaphragm-covered amperometric sensor principle for disinfectant sensors
• Low pH dependency for free-chlorine sensors
• Pre-assembled measuring system
• Automatic setting of the water flow and detection of missing water flow in systems with flow cell
• Sensor holder included in systems for tank installation
• 7.5 m of cable included in systems for tank installation (extension cables are available in lengths up to 20 m)
• Sensor guard included in systems for tank installation