The applications of a dosing pump
The leak-free variants, i.e. hermetically sealed diaphragm pumps, enormously expand the range of application of the oscillating positive displacement pumps so that the fluids can have the following properties:
– abrasive (suspensions with SiO2, Al2O3, catalysts, abrasive pastes)
– explosive (hydrogen, silanes)
– extreme purity (antibiotics)
– high vapor pressure (liquefied gases)
– corrosive (HCl, HF, HNO3)
– radioactive (plutonium / uranium salt solutions)
– reactive (water glass, sodium, aluminum alkyl)
– bad lubricating (liquid gases)
– sterile (lecithin, vegetable oils, dairy products)
– toxic (chlorine, bromine)
– valuable (spice extracts, volatile oils)
Benefits of a dosing pump
– Extremely rigid pressure characteristic curve
– Hermetically tight
– Very precise metering
– Dry-run safe
– Self-priming under certain conditions