The water-powered Dosatron D400MZ02 is the first to join the Mega-Flo series. This high flow fertilizer pump has a maximum flow of 400 GPM and a minimum flow of 110 GPM with a 4” flange connection. The Dosatron D400MZ02 injector is water-powered with a ratio range of 1:5,000 to 1:500 (0.02 to 0.2%). It features externally adjustable injection rates and built-in bypass with dimensions of 57” x 31 ½” x 20 ¾”. The D400MZ02 Dosatron injector is great for nutrients, fertilizers, insecticides, fungicides, acids, wetting agents, disinfectants, and cleaners.