1. Water pump unit casing is suitable for ductile iron;
2. The impeller is suitable for bronze or stainless steel.
Material of diesel engine fire pump set:
1. Diesel engine fire pump unit should adopt compression ignition diesel engine;
2. The fixed power of diesel engine should check the influence of altitude and ambient temperature on diesel engine power;
3. Diesel engine fire pump unit should have the performance of continuous work, the test run time should not be less than 24h;
4. Diesel engine fire pump unit of the battery should ensure that the fire pump unit at any time to automatically start the pump requirements;
5. Diesel fire pump supply tank should be based on the fire duration is determined, and tank for the minimum effective volume should be allocated according to the 1.5L/KW, diesel fire pump in the oil tank storage of fuel should not be less than 50% of the reserves.
