Nothing creates more return on your irrigation investment, then adding a fertilizer injection pump to your machine. We carry complete pumps and every replacement part, but the base. We keep these in stock at all times to insure maximum uptime during the season. Use the parts list below to identify which part you need. Pumps motors are available in 3 phase or 1 phase, with 3 phase being the most popular. The CDS John Blue design is time tested and accurate.