What they do

Solenoid-driven diaphragm metering pumps are available in capacities ranging from 0.74 to 75 l/h at a back pressure of 25 to 2 bar. To be able to meter almost any liquid chemicals, ProMinent uses a very extensive range of materials.

How they work

A magnet moves the solenoid shaft forwards and backwards by switching on and off. This stroke movement is transferred to the diaphragm in the dosing head. Two non-return valves prevent the feed chemical from flowing back during pumping. But that’s not all. The stroke length and stroke rate can be adjusted to alter the capacity of a ProMinent solenoid-driven metering pump.

Where they are used

  • General: Chemical metering up to 75 l/h
  • Potable water treatment: Metering of disinfectants
  • Cooling circuits: Metering of corrosion inhibitors and biocides
  • Waste water treatment: Metering of flocculants
  • Paper industry: Metering of additives
  • Plastics production: Metering of additives

What are the advantages?

Because there is only one moving part, the drive is virtually wear-free. The pump requires no lubricated bearings or shafts; the maintenance and repair costs are therefore very low. The continuous running characteristics are excellent.

Find the right pump type in four steps

  • Specify pump capacity in litres per hour [l/h]
  • Specify back pressure in bar
  • Find the intersection of these two values and select the pump type that lies nearest to it