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ZW Series self priming sewage pump is for self priming pump with waste water discharge. It means the pumps can not only self suck as the same as ZX Series self priming pump for clean water without foot valve and pouring guide water but also suck and discharge waste water with large grain and long fiber and sediment and impurity . The performance is very stead. The pump is very convenient to operate and move and install and maintain.
1. Environment temperature is no higher than 45 degree Celsius. Liquids temperature is not higher than 120 degree Celsius.
2. Liquids PH value: cast iron pump (6 to 9) and stainless steel pump: (1 to 14)
3. Impurity weight into liquid cannot be more than 15 percent of liquid weight. And liquid density is no higher than 1240kg per cm3.