Description: Relationship between the pump efficiency and the rate of flow at given operating conditions of speed and liquid; Name: characteristics of pump efficiency
Description: relationship between the total head of the pump and the rate of flow at given operating conditions /rated conditions of speed and liquid; Name: Pump efficiency curve
Description: Classification of electrical and not electrical operating supplies according to the explosion capable atmosphere in which they are provided for use; Name: Explosion protection-device group of the complete device