GANGFA motor design different pumps for different fluids: clean water, dirty water, water with fine sand, hot water, diesel oil or hot oil .Make sure that your pump would be suitable for the transmitted fluid. Avoid using the clean water pump to deliver sewage because it will cause impeller blocked and the electric motor burn down. Do not use a dirty water pump to deliver clean fluid to avoid wasting power. Usually the ambient temperature is higher than the temperature showed in this catalogue. If you need pumps for higher temperature fluid, please advise us. We will find a solution for you.