Grundfos Metering

DDA

SMART Digital dosing pumps are the next generation of variable speed micro-processor controlled metering pumps.

  • 1:3000 or 1:1000 turndown ratio
  • PVC, PVDF, Polypropylene & 316 SS materials
  • Modular construction with removable wall mounting bracket, and side or front control positions
  • Stepper motor driven with universal power supply (1×100-240VAC, 50/60 Hz)
  • Reliable dosing of fluids that off-gas (sodium hypochlorite, etc.)
  • NSF approved

Feed rate setting range: (+/-1% repeatable accuracy through entire adjustable range)

DDA 7.5-16 0.0006 to 2 GPH @ 232 PSI
DDA 12-10 0.0031 to 3.1 GPH @ 150 PSI
DDA 17-7 0.0045 to 4.5 GPH @ 100 PSI
DDA 30-4 0.008 to 8 GPH @ 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 patented sensor technology to measure and verify flow, in addition to pressure monitoring. The AutoFlowAdapt feature on the FCM version can will correct the actual feed rate to match the pump’s set point. 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.

  • Scalable control input signals (up to 1:3000 turndown ration) to meet the widest flow rates in one model.
  • Slow mode to improve the max viscosity up to 2500 CPS
  • Profibus ready (field retrofittable)
  • Three variants allow for different degrees of monitoring & control:
    1. DDA AR : Automatic or manual control with a relay outputs
    2. DDA FC : AR + Flow Control for flow verification
    3. DDA FCM : FC + measurement to verify and measure flow. Pump will auto-adapt so actual feed rate matches target feed rate.


DMH

  • 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

Applications:

  • Power generation
  • Oil & Gas
  • Refineries
  • Pulp and paper industry
  • Textile industry
  • Food and beverage industry
  • Industrial process water and waste water treatment
  • Drinking water treatment

DMX

  • 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

Applications:

  • Power generation
  • Oil & Gas
  • Refineries
  • Pulp and paper industry
  • Textile industry
  • Food and beverage industry
  • Industrial process water and waste water treatment
  • Drinking water treatment