RK2 washdown closeup
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1. Sprayer for inside of riser tube. This sprayer uses system water (to avoid changing salinity). On this model, the riser tube washdown is manual using the blue ball valve on the upper left.
2. Sprayer for outside of tube. Three nozzles spaced around the collection chamber use house water line to provide high pressure spray. Fresh water is okay here because all of the water and skimmate goes directly to the sewage drain line. This washdown is controlled by a solenoid timer.