1. The pump is a 300BYXZXW1000-12-55 type vacuum-assisted self-priming centrifugal pump produced by Jiangsu Boyu Pump Industry; inlet diameter 300mm, outlet diameter 250mm.

2. The pump is equipped with a dry-run protection system for no-liquid operation, ensuring that the impeller does not cause damage to the mechanical seal, impeller, or pump chamber when rotating at high speed without liquid inside; (Certification of intellectual property rights for the base of the impeller that can be operated without liquid provided)