This Neoperl water savers are an absolute hit! My roommate turn principally on the shower to stop and let the water even while you run to lather. Since go depending on water pressure by up to 35 liters / min. Due to this water saver, you can reduce the flow, without running the risk that one gets no more water on the top floor when all the showers in the house. I have placed the parts other purpose and without the white seal directly in the connecting cables of the shower faucet. The fit exactly into the pure poetry. Thus, the ceiling outlet is throttled. One must note only in the calculation that one. At 7 liter flow, 14 liters fuel consumption has, as a hot and in a sitting in the cold pipe