... Outlet pipe (C): stainless steel material, 6 - 8 flange;Drain (D): 3 flange Backwash valve (E): plastic material, 3 victaulic ... application(Irrigation Water Filter)Filtration grade selectionDrinking water pretreatment, various production process water, nozzle protection50Recycled water filtration, water supply pre treatment100Reclaimed water treatment, waste water treatment200Raw water quality, ...