Overflow for the sink - the main purpose and features of

15-07-2018

Sewage

The system that prevents flooding is widely used in bathrooms, but it began to be used on sinks much later. Meanwhile, the drain for the sink with overflow allows you to eliminate the leakage of water from the tank when it is clogged, this is a very important function, which prevents a lot of trouble. But, in order for the system to work properly and reliably, one should take a responsible attitude to the choice of products and carry out the installation in accordance with the technology.

In the photo: all elite models of plumbing must be equipped with overflow

What to look for when choosing a product

First of all, you need to purchase a siphon with all the required elements. As a rule, all nodes go in a set, as long as the kit is complete (the instructions on the package must indicate the completeness of the products). A few simple recommendations should be considered:

system configuration	You should know the specifics of your communications, this is important due to the fact that the siphons provide connections for draining water from equipment. This factor is the most important, since in the absence of special findings, you will have to buy another set
Manufacturing material	The price largely depends on this factor, below we will take a closer look at the most common options. It is worth noting that not always expensive options are much better, sometimes it makes sense to choose a simpler system, especially if it will be placed in the country or in other places that are used infrequently
Completeness	Above, we touched on this moment, be sure to check the actual number of items with information on the package. Remember that you will have to do the work yourself, and the lack of even the smallest element will make the assembly impossible, and you will also have to spend time going to the store and replacing the kit.
Quality	One of the most important factors, since it is he who most influences the durability of the structure and its resistance to adverse effects. All elements must be without any damage and cracks, a smooth surface with uniform color is an indicator of excellent quality.

Note! Pay close attention to the sealing elements of the system, since according to statistics, they most often fail. Seals are made of rubber or silicone, they should be quite elastic, there should be no cracks on the surface.

In essence, the kit of parts for the overflow for the sink consists of a branch adjacent to the siphon of the drain element with seals, which is strengthened by a slot under the faucet

Design features and installation of siphons with overflow

First of all, we will consider the main types of systems offered by retail chains. They can differ in a variety of parameters, but we consider only the most important ones.

Overflow allows water to go down the drain, which is why its presence is desirable in any sink.

Design differences

A sink outlet with overflow can be made from a wide variety of materials:

Cast iron - is used less and less often due to the unattractive appearance and susceptibility to corrosion. Such options can be found in old systems and most often they are simply replaced with more advanced and modern designs, which is the most rational and rational solution that allows to get rid of many problems.
Polypropylene and polyethylene - the most popular materials for the manufacture of drainage systems in plumbing. Their main advantages can be considered low cost, excellent resistance to moisture and the occurrence of fungi. Plastic is not susceptible to corrosion, has an excellent appearance and, subject to the basic rules of operation, serves for at least a decade.

Plastic products are very easy to assemble and install.

Bronze and Brass - These options are excellent for the manufacture of drain systems, despite the high cost, they are widely popular among buyers due to their attractive appearance and reliability. Bronze products are much more difficult to damage and deform, unlike plastic, and they do not corrode, unlike cast iron.

Brass constructions belong to the premium segment of the market.

According to the type of drainage system, there are three main options, each of them has its own characteristics and advantages:

Corrugated siphons are the most popular option, the main advantages include simplicity of design, simple and fairly quick installation process, as well as fairly compact dimensions. Such a system without problems can be placed even under small sinks. Of the minuses, it should be noted that the cleaning process is complex, as it is necessary to remove the entire system.

Tip! The best solution would be to purchase a combined version in which the corrugated nozzles are combined with a small sump-trap. It is much easier to clean: just unscrew the bottom cover and remove all contamination without removing the structure.

Combined options - a great solution for your sink

Bottle siphons are one of the most popular options and can be made of both plastic and metal. Their advantages include a quality water seal that reliably retains odors, such a design is very easy and quick to clean. In addition, such a system, according to experts, is the most durable and practical.

It looks like a metal sump bottle siphon

Pipe structures are very easy to clean, which is an undoubted advantage, but they have a big drawback - a small water trap, therefore, with infrequent use, odor can penetrate from the sewage system of the house. The rest of the system is very attractive: simple and fairly reliable.

On such systems, overflow is usually connected through a corrugated hose.

Installation

The assembly of the whole structure should be done in a specific order, consider it in the form of a guide to the assembly:

First of all, we carefully study the instructions for the work. All elements are arranged so that they were at hand, and did not have long to search for any fragment.
First, the exhaust grille is fastened, a rubber gasket is put, a net is put on it and a long fixing screw is inserted. After the bottom side of the fastener is put, and the system is tightened until it stops. A plastic hollow screw can be used as a fastener, it is easy to deal with its tightening.
After the overflow is attached, which can be a tube (then you have to adjust it in height) or a corrugation (then no additional adjustments will be required). The inlet part is fixed through a rubber gasket to the sink, everything should be as tight and secure as possible.

This is how the system looks at this stage of the assembly, when the outlet and overflow are attached

Further, according to the scheme, the hydraulic sewer is assembled, it is important not to forget about the seals - they must stand exactly and take root evenly around the entire circumference. Then the system joins the sink outlet and is fixed with a cap nut; it is usually sufficient to clamp it manually.
The last is put the exhaust pipe, which is connected to the sewer outlet. This can be either a rigid structure or a corrugation (in cases where there is interference that needs to be circumvented).

This is how most systems look like when assembled.

Important notes

It is worth noting several important nuances:

The cap for the sink overflow is installed on all the equipment on a regular basis; this allows it to be operated even if your siphon is not equipped with such a structure.
If you decide to install a bottom valve for a sink with overflow, the installation of a specially equipped siphon is obligatory, it will always keep the water level no higher than is permissible.
Usually siphons are universal and suitable for all sinks, however, if you have a model with an unusual layout or with non-standard openings, it is better to purchase the system from the seller, as it may have differences.

Bottom valve saves water and is very popular in the West

Conclusion

As you can see, the presence of overflow significantly increases the reliability of the system, while there are no difficulties with its connection and installation. The video in this article will clearly show some important points and help you better understand the specifics of the work.