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Photo 6: I personally recommend DOW Filmtec membranes. As the originator of the technology, Dow provides the most efficient and effective membranes on the market today.
Photo 7: There are two sets of seals on the membrane that are lubricated with silicone lubricant prior to being installed in the membrane housing or vessel. A double set of O rings, on the product water end, keep the product and waste water from mixing.
Photo 8: A larger flanged O ring keeps the element centered in the housing. Note the hole in the plastic stem. Once the membrane is in the housing, these holes are used to remove it for replacement using a piece of string or wire.
Photo 9: The product end of the membrane (two O rings) is inserted first in the housing.
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