All the reviews on this product say they love it, but how do they know it works? I decided to do a simple test to find out. I have three 7 gallon jugs that I use to store RODI water in my brine tank. I chose to put the white hose (RODI water with a TDS of 0) in 1 jug and the black hose (effluent from the reverse osmosis membrane in the other jug). I then set a timer and turned the unit on for 1 hour and noted the water level in the jugs. Here are the results: First lesson. Well, there are no instructions. When this thing arrived I figured you would just stick it in the end of the sewer line, which I did. I made several gallons of water (40+) this way and it worked so that was test 1. If you look at the jugs you can see the line on the left jug is RODI water. Spoiler alert: All three tests produced almost the same amount of RODI water, so the numbers 1, 2, and 3 are next to each other. As for the sewage, you can see that it's about halfway down the pitcher. This left me with about 1:3. During this test I read about the choke and realized that it should be right after the diaphragm, not at the end of the black tube. I wish it was in the non-existence instructions. Test 2 - I removed the restrictor to see how much water was being produced and wasted. Again the timer was set to 1 hour and the results are shown. Опять же, количество произведенной воды RODI было таким же, как в тесте 1, но количество сточных вод было НАМНОГО больше - почти вдвое больше, чем в тесте 1. Очевидно, что ограничитель помогает уменьшить количество сточных вод, но, судя по этому тесту, it's not like this. helps you produce more RODI in the same period of time. The production was about 1:6. Test 3 - I chose to place the restrictor right after the diaphragm as others have mentioned. In my installation, the effluent from the membrane enters the Y-piece. After the "Y" one hose goes to the diaphragm flush valve and the other hose goes to the other "Y" connector on the other end where the two hoses meet. I opened the Y-piece to my surprise to see that the manufacturer had already installed a choke. shit, now what? I decided to put the limiter I bought on the other end of the Y-connector so the manufacturer would have their own limiter on one end of the Y-connector and this limiter on the other end. This put the limiters in series. This also brings it closer to the membrane as has been suggested. I then ran a test for 1 hour and the results were very similar to Test 1. Both readings were slightly lower, but that could be due to the fluctuating water pressure in my well. In short, the restrictor does not perform reverse osmosis. The membrane produces more water, it simply reduces waste. Is it worth? Yes I think so, about 50% less waste and only cost about $8. It doesn't matter where you place the limiter as long as it's somewhere on the waste line.
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