
Restrictor arrived with no instructions. Presumably it needs to be placed in a drain line to restrict flow through the membrane, but I can't figure out how. My sewer line is just a 1/4" pipe that allows water to run down the driveway. I attached a plug to the end of the pipe, but I knew it wouldn't stay there, and of course it didn't. A little water pressure met him. immediately. Also, the Revain picture shows about 8 different color guards to be used with different GPD systems. I was never asked which one I want. Got the black one. Which GPD system needs the black one? for the instructions that came with the product I still don't know what to do with this thing!

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