Mar 8, 2016 #1 jlippe Chemical Joined Mar 2, 2006 Messages 3 Location US Has anyone successfully converted an upflow sand filter to down flow?
Mar 8, 2016 #2 bimr Civil/Environmental Joined Feb 25, 2003 Messages 9,381 Location US Have done many renovations. What is the application? Upvote 0 Downvote