It "floats" the sediment out. It doesn't "blast" it out. With the density of the Tri-x filters, you'd most likely damage the filter material if you put something in there that would actually blast it out like going through a screen door. I'd hate to turn a really high pressure spray on my $350.00 worth of filters. It will sting when you put your hand in the stream (if that gives you an idea of the amount of pressure. It will definitely clean your filters better than using a garden hose at an angle from one end of the filter.
I would recommend constructing yours somewhat the way I did.
I got a 10' piece of 1" PVC and the fittings you see in the picture (about $15.00 worth of supplies). Before I glued everything in place, I experimented with the size of the slot that I cut into the end of the pipe. I used a hack saw and a carpenter's handsaw to see the action of the two different widths of cut. If it didn't feel right, I'd cut off the 2" and make another slit, either wider or shorter. When I got the pressure and pattern I liked, then I cut the pipe to the length I wanted, glued everything in place and put it to use after allowing the PVC glue to cure for about 30 minutes.
