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Old 06-08-2004, 01:38 PM   #11
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I have a "mop sink" in the laundry room that mine is hooked to. I used a piercing valve to connect it to the cold water side of the supply line going to the faucet. The RO unit and 55 gal container sits in a closet. You can get several different kinds of connectors and you don't have to use the faucet. I recently installed a unit for a lady and tapped into her supply line for the washing machine using a 3 way valve from Home Depot and the garden hose connector from Aqua FX. This is working out quite well so far. You can even install it under your kitchen sink. One thing I would recommend is to install the connector on the supply side of a pre-existing valve so you can cut it off if there is ever a leak.
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Old 06-09-2004, 01:45 PM   #12
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Thanks all.

Is the waste water produced by making RO/DI water useable? 3 gallons per 1 gallon RO water seems like a lot of waste.
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Old 06-09-2004, 03:46 PM   #13
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The RO membrane filters at a molecular level. Most contaminants are larger than H20 and will not go through the membrane. This is called rejection. Only the pure water is allowed to get through the membrane...the rest is rejected and goes out the waste line. The efficiency of the RO membrane is heavily dependent on the temperature and pressure of the supply water. If I remember correctly, the optimum operating parameters are about 70*F and 80-100psi. Colder water at lower pressure will result in a higher percentage of waste water. Needless to say, a lot of water goes out the waste line with the rejected matter. HTH.
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Old 06-09-2004, 07:37 PM   #14
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Is it possible to collect the water from the waste line and use it for watering plants and stuff like that?
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Old 06-09-2004, 07:51 PM   #15
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My wife uses the waste for watering her garden and so far she has not seen any damages to her plants.
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Old 06-09-2004, 08:17 PM   #16
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I know some people plumb it so that their waste water fills the washing machine. I'd probably use it to wash the car.
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Old 06-09-2004, 10:06 PM   #17
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Hmm, has anyone measured it with a TDS meter?
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