Where high strength, hardness and wear resistance matter, MAAG-Zahnrader A.G. of Zurich produce the gears for their stainless steel gear pumps from rolled Ferralium® 255 super duplex stainless steel bar (UNS S32550, Alloy 255, DIN 1.4507, ASTM F61). Its outstanding corrosion resistance extends the field of application further, so the pumps can run for longer periods in critical corrosive environments where conventional stainless steels would be unsuitable.
MAAG manufacture these gear pumps for the chemical industry under the trade names "Therminox" and "Cinox". They are designed for fluid displacement to and from vacuums, and their uniform discharge rates allow use as pure displacement pumps, pressure generating pumps or dosing pumps.
The range covers capacities at 0 bar of 1.28 to 1342 cm3/rpm, at operating temperatures from -30°C to 320°C.
