Grundfos DMH Pumps
Grundfos DMH hydraulically actuated piston dosing pumps have a dosing range of 0.15l/hour to 2 x 1500 l/hour.
And a maximum pressure range from 200 bar to 40 bar.
DMH pumps can offer accuracy of <+/- 1.5% within its 10 - 100% control range.
Pumps offer smooth low pulsing dosing.
Motors can be supplied 50hz 60hz and 100hz via frequency converter.
EX and ATEX versions are also available.
System over pressurisation risk is reduced due to the pumps pressure releif valve and active diaphragm protection system. A degasssing valve can also be used.
Applications include: -
Dosing of various chemicals in all stages in a power plant:
For boiler feed water, treatment of cooling water and process water (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).
Petrochemical/oil & gas industry, refinery
Dosing of chemicals in process areas around the production of oil and gas (apart from drilling hole, platform):
Dosing of chemicals for treatment of cleaning water and process water
Dosing of wax as lubricant in oil-pipelines
Dosing of inhibitors and anticorrosion chemicals to protect oil pipelines
Dosing of additives and catalysts
Odorisation of gas because of safety aspects in case of leakages
Treatment of process water and drinking water
Rough environments (hot climate, desert, outdoor installations)
Higher flow and pressure ratings
ATEX Directive (94/9/EC), Group II, category 2 (zone 1/21) and
ATEX Directive (94/9/EC), Group II, category 3 (zone 2/22)
Dosing of flammable liquids
Dosing of alcohol or methanol in wastewater treatment
Cleaning of kerosene and petrol in mechanical engineering and airport areas
Dosing of ethanol and methanol
Dosing of food-grade alcohol for disinfection in meat and bread packaging
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