The self-priming pump is a low-pressure pump, designed for a wide range of uses, applicable for pumping polluted sewage water with self-priming ability of a depth up to 6 meters. The application of this pump is mainly fo service work in fields, construction and agriculture, drainage, pumping and irrigation. The density of the pumping liquid up to 1 050 kg/m3, containing up to a 3% weight hard mechanical mixtures (sand, grit), max. granulation 4 mm. Max temperature 60 °C and acidity 6 – 7.5 pH at 20°C (LC, AL execution). For the ZC execution is pH range is 1 – 14.