Do water free urinals work by gravity?



  1. 0 Votes

    Yes, they drain by way of gravity.

  2. 0 Votes

    Gravity is what makes the urine go down, but it’s an oil-based fluid in the pipe that keeps the odor away! Because the urine is more dense than this sealing liquid (which settles in a layer in the drain or in its own cartridge), it slips through, while the oil remains on top, effectively preventing the smell from rising back up as well.

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