Electric pumps of the 4 COA range are used to pump cutting and cooling emulsions in machine tools. The viscosity of the pumped liquid must not exceed 150 mm2.s-1, temperature 0-60 °C, and the size of impurities 0.1 mm. The pumps must not be used for the pumping of flammable liquids. The pumps feature a special flanged shape adapted for installation directly onto the cooling liquid tank.
The maximum and minimum level of the liquid is specified in the dimensional sketch. Fixing dimensions comply with the DIN 5440 standard. If requested, the suction opening of the pump may be provided with a screen. All pumps are manufactured in the stainless AV2 version and most types are also manufactured in the acid-proof AV version (max. acidity 3pH).
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