![]() However, it will still not be able to completely replace a complete drain due to the small hole and the corresponding diameter of the overflow pipe. If there is a blockage in the pipe, the overflow will provide water drainage for some time. That is why do not turn on the taps in the bathroom to the maximum, even if you have an overflow: the chances that you will have time to respond in an emergency situation are much higher. However, if its force is too strong, the overflow will no longer be able to resist it, and some volume of water will still be on the floor. The overflow does indeed drain excess water from the tub or sink you have collected. That is why it is not worth saving on it, and when choosing a sink or bathtub with or without overflow, it is better to give preference to the first one. The key advantage of the overflow is that, unlike the drain hole, it is always open, which allows you to avoid any embarrassment associated with a blockage or forgetting to turn off the tap. However, there is a significant risk that the overflow channel will not withstand the intense water pressure. In this case, an additional pipe cut-in and the installation of a siphon are not required. The overflow system at the sink can be done in the same way. This is the name of the tub overflow system, in which the overflow channel is built into the inner wall of the bath through a specially cut hole in it and leads directly to the drain. However, in this case, it is necessary to be especially careful not to clog the siphon. This option is considered the most practical in terms of high protection against moisture and one hundred percent water drainage into the sewer system. Further, the water moves through the pipes to the siphon, to which water also leaves the drain hole. In this case, the overflow hole removes excess water outside the tub through a pipe mounted in the outer part of the plumbing. If everything is more or less clear with the overflow device in the sink, then in the bathtub case, it is worth considering that two options for water drainage can be used for it. Thus, the drain hole at the bottom of the bathtub or sink will draw in the water much faster and more intensively than in equipment without overflow systems. As long as the overflow is not occupied by water, it allows additional air to enter the pipeline. Rescued floors and the safety of renovations for neighbors below is not a reason to take care of equipping your plumbing with such a system?Īnother undoubtedly essential purpose of this hole is to increase the rate of water drainage. So, first of all, the overflow will help you out if you opened the water to get a bath or washed something in the sink and completely forgot about it. Excess water goes back to the sewer through the overflow if its level in the bath or sink has increased more than necessary. The purpose and types a bathtub and sink overflowĪn overflow is an additional hole connected to a drainpipe, usually located at the top of a sink or bathtub.
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