They are suitable for transferring clean liquids containing impurities up to 0.03 mm in size. Their hydraulic components: impeller in brass, feed screw and pump body in cast-iron allow them to be used with emulsions and oily substances, glycol and liquids in general provded they are not oxidative for the construction materials. Viscosity must not exceed 21 cST (3° Engel). The temperature of the liquid must not exceed 90°C. They are commonly used on: - drilling centres - cooling units They are normally installed on a tank with a capacity which is proportional to their flow rate, about 3-4 cm from the bottom. It is important to make sure that the maximum liquid level in the tank is always 3-4 cm lower than the support flange (see figure). For different uses, please consult our Technical Office.