Self-priming pump CBH-80 and its units (hereinafter referred to as pumps or units) are designed to pump liquids without mechanical impurities. Pump CBH-80 is designed to pump the following liquids: water, gasoline, kerosene, diesel fuel and other liquids with a viscosity of not more than 2 10-6m2/s at a temperature from -40 to +50 and a density of not more than 1000 kg/m3. Symbol of a pump or electric pump unit: C self-priming H-pump 80- DN inlet and outlet pipe, mm Specifications of Pump CBH-80 The main technical characteristics of the pump are shown in Fig . 1 and in Table 1 at testing it on water at a temperature of 20 C and a rotational speed of 1450 rpm.