自吸排污泵的扬程按照提升高度，计算管道损失后确定。 如需要输送的介质是一些含有一定固体介质(如泥沙)的混合液体，这个问题使得排污泵在电机承载能力、轴承布置、泵体密封等方面的要求比一般的水泵要高，一般来说要选择自吸排污泵或自吸排污泵。在选型和订货时，一定要了解清楚你所选择排污泵的密封性和承载能力是否合适。
The head of the self-priming sewage pump is determined after calculating the loss of the pipeline according to the lifting height. If the medium to be transported is a mixture of liquid containing certain solid medium (such as sediment), this problem makes the requirement of sewage pump in motor carrying capacity, bearing arrangement, pump body sealing higher than that of ordinary pump, generally speaking, Self-priming sewage pump or Self-priming sewage pump should be chosen. When choosing and ordering, be sure to know whether the sealing and carrying capacity of the sewage pump you choose are appropriate.