Grundfos DMH - Hydraulic Diaphragm Metering Pumps

Overview

Overview

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

 

> CONTACT A LOCAL DISTRIBUTOR


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Literature

Literature

 

DMH Product Flyer

Product Flyer

DMH Product Flyer


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Service

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For service questions, warrantee information, energy audits or to schedule repair, please contact us.

Contact
Contact a Distributor

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Ask a Product Question

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