KeenSen BW and FR Series: Brackish Water and Fouling Resistant RO Membrane Element Model No.:BW-8040/4040, BW-8040FR/4040FR(Fouling Resistant) Usage:It is applicable to the desalination of surface water, groundwater and water treatment with salt concentration between 2000 and 8000ppm. It can be widely used in the medicine, chemical industry, beverage, electricity and other various industries etc. Operating Limits and Conditions of Membrane Element Max. Working Pressure 600 psi(4.14MPa) Max. Feed Water Temperature 45 Max. Feed Water Flow 17.0m3/h(8040),3.6m3/h(4040) Max. Feed Water SDI15 5.0 Free Chlorine Concentration of Feed Water 0.1mg/L pH Range of Feed Water during Continuous Operation 3-10 pH Range of Feed Water during Chemical Cleaning 2-12 Max. Pressure Drop of Single Membrane Element 10psi(0.07Mpa)