Installing an Under-sink Water Purifier
An under-sink water purifier mounts onto the cabinet under your sink and is easy to hook up—
as long as you get parts that fit your supply pipes and tubes. Simply hook it up to the cold-water line and enjoy filtered water every time you turn on the tap.
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Step One
Position the water purifier. Set the bracket so the bottom of the purifier hangs at least 3 inches above the cabinet floor. This will allow you to remove the cartridge easily. Pre-drill the holes and then attach the bracket to the wall with wood screws.
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Step Two
Tap into the supply tube. First, turn off the shutoff valve for the line. Then, use a tubing cutter to cut into the supply line at least 3 inches above the shutoff. Place a bucket under the water line and drain the line into the bucket. If you have a braided supply tube, you may need to consult with a plumbing associate to find the parts you need.
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Step Three
Install a compression fitting on each end of the cut line. Insert the lines to and from the water purifier into the compression fitting and then tighten the compression nuts from the fittings using two adjustable wrenches.
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Step Four
Connect the inlet and outlet lines to the water purifier. Slide the compression nuts over each line and then place the compression rings (ferrules) over each end. Insert the lines into the water purifier and tighten the nuts using an adjustable wrench.
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Step Five
Flush the system. Install the cartridge and turn the water back on. While you’re checking for leaks, flush the system until the water runs clear.