This series is designed as the portable non-blocking pump. Since the impellor of this pump is designed for pumping out the solid matter under 35mm diameter and erosive liquid smoothly, it is applicable for draining sewer, pumping water from reservoir and pumping wastewater from sewage tank. The house of this pump is made of the SUS304 stainless steel, so it is really erosion preventive.

more info:
http://www.hosheng-cnc.com/products2.html