Inside Drops from RELINER/Duran extend pump life in lift stations by preventing aerated influent from being directly drawn into the pumps and causing cavitation. The drop pipe should always be extended below the low-limit level and cut to follow the slope of the base fillet. If there is no fillet, users cut the pipe at 45 degrees and maintain a distance from the floor or fillet of one pipe diameter. This creates a diffuser by directing the flow back against the structure, de-aerating the influent. 800/508-6001; www.reliner.com.