"We Can Solve Your Water Problems"

The HYDROFLOW™ Black Walnut Shell media filter has evolved through five generations from the original nut shell filter which has proven it's self with units in operation for the past 30 years. The HYDROFLOW™ filter performs the filtration and backwash cycles just as the original down flow, high rate nutshell media filter did. However, by relocating the pump and eliminating several of the valves we were able to solve all of its short comings, such as screen plugging and failure to restart if shut down during backwash.

If you are filtrating out contaminates from water, such as, hydrocarbons, wax, paraffin, tallow, blood, Etc., then the HYDROFLOW™ black walnut shell filter is the product that will solve your problem.

Test Filters

Test filters and leasing/rental page

If you would like to run your water through a Hydroflow to see how it will perform on your application, then please contact us to set-up one of our rental pilot units. These units are one foot in diameter and about nine feet tall. They are fully automatic and have a thru-put of 9 gpm or 300 bwpd and run on 220 volts 1Ph.
For more information about our pilot units or to schedule one for a test at your location; please contact us at jerry@walnutshellfilter.com