The largest of the Dosatron injectors, the 100 gpm is easy to install and can be manifolded for higher flow rates or used on a by-pass system as well as mounted in series. As with all the Dosatron injectors, its non-electric, water-driven design maintains injection accuracy even at variable water flow rates. Durable Dosatron injectors will handle fertilizers, insecticides, fungicides, algicides, acids and wetting agents. Flow rates 5-100 GPM, external adjustment range of 1:500-1:50, operating pressure of 2-120 PSI. 2" PVC hookup. A 200 Mesh filter is required with all Dosatron injectors.