Hydraulic Diaphragm Metering Pumps – DMH

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