ACO backflow stop for light shafts
If you have light wells too, you know the problem. We are talking about entering water, which should be avoided at all costs. An ACO backflow stop can do a good job here.
It happens again and again that sewers no longer have the amount of water due to very heavy rain can absorb and this then seeks its way up to somewhere through drains to the outside reach. If this happens, for example in a light shaft, it is inevitable that water will penetrate the cellar. This can cause enormous damage. To avoid this, ACO has developed a backflow stop which is an ideal solution to this problem.
ACO backflow stop - how it works
- The function of the ACO backflow stop is simple but ingenious.
- In the existing drain there is a small cage with a plastic ball.
- When the drain is open, this ball is at the bottom of the cage. Then the way is free for water to run off.
- However, if there is a previously mentioned back pressure, the ball floats up and against the sealing seat. This closes the path for backflowing water.
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Maintenance of the backflow stop
- Regular maintenance should be carried out wherever there are seals. This is also the case with the ACO backflow stop. You should do this once a month.
- To do this, remove the backflow unit and rinse it off thoroughly.
- Then coat the seals with a special lubricant.
- Then you have to clean the thread in the base body.
- You can now reinstall the backflow unit. Make sure that the unit is seated exactly.
So if you have ACO light shafts and there is no backflow stop, you should retrofit it as soon as possible.
