Connecting a washbasin to the sewer system. Connecting a kitchen sink (sink) and washbasin. Choosing a sink and siphon
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Since you can connect the washbasin to the sewer yourself, there is no need to involve specialists in this work. But if you lack the skills to install plumbing and are unsure of your abilities, you can use the services of professionals. The sink should be installed at the end of the renovation. Installation technology kitchen sink and the washbasin in the bathroom is similar.
Preparing to connect the sink
Determining the installation height of a plumbing fixture (for more details: “Installation height of a sink - at what height to install it correctly”). The sink, not equipped with additional accessories, is located at a height of 850 millimeters. At this level, draw a horizontal line - it will be the guideline for installing the washbasin. Top surface plumbing fixture must correspond to it.If there is a support leg or when the sink is installed in a cabinet, there is no need to determine the height of the plumbing fixtures. This parameter depends on the size of the leg or cabinet.
Marking mounting locations on the wall. Before installing the fastening system, it is necessary to make appropriate markings on the wall. The sink bowl has mounting holes for connecting the sink to the sewer.
The plumbing fixture is applied to the wall, as in the photo, its upper edge is aligned with the drawn line and the places where the holes for fastening will be located are marked. This work is easiest to do with two people. One person should hold the washbasin near the marked line, and the second at this time can mark the places for fasteners from below. If there is a leg or support cabinet, carrying out installation work simplified - the plumbing is placed on a support and mounting points are marked on the wall.
Installation of sink mounts
Execute this work in the following sequence:- holes are drilled in the wall according to the markings;
- dowels are driven into them;
- then special mounting pins are screwed in.
When screwing in the studs, you should pay attention to the depth of their installation, since it should allow you to hang the washbasin bowl and screw the fastening nut. This means that the part of the stud protruding from the wall should be of a length that is slightly longer than the thickness of the sink and has an extra centimeter and a half for tightening the nut.
Connecting the washbasin to the water supply
Mixer installation. When connecting a sink to a sewer in a bathroom or kitchen, you can install the faucet after attaching the plumbing fixture to the wall, but experts recommend doing this work before attaching the washbasin. The fact is that all connections to it and the fastening process are made from below (read: “How to choose a kitchen faucet - types, features, operating principles, selection rules”).Mixer installation work is carried out in the following sequence:
- depending on the type of mixer, one or two pins are screwed in;
- install hoses supplying hot and cold water and tighten them using an open-end wrench. Tightening is carried out with moderate force and very carefully, taking into account that after installing the mixer on the sink, they will no longer be able to be tightened;
- according to the washbasin connection diagram, you need to route water supply hoses through the holes in the sink;
- on reverse side The studs are fitted with rubber seals, a pressure washer and fastening nuts, which are tightened with a wrench.
You should pay attention to how correctly the mixer spout is positioned - the product is installed at a right angle relative to the mounting wall or the side of the sink adjacent to it. Read also: "Which corner sink is better for the kitchen - types, advantages and disadvantages, methods of fastening."
Mounting the washbasin on the wall
The sink is secured after completing the connection to the water supply:- the sink with the mounted mixer is placed on mounting studs that are screwed into the wall;
- insert plastic inserts into place;
- Finally, tighten the nuts.
Connecting hoses to the water supply system. A gasket is placed between the tap and the sealing nut. The nut does not need to be tightened too much, since the rubber gasket usually seals well. It can be tightened after the test (after turning on the water supply). If a leak occurs at the connection, the nut will need to be further tightened. Read also: "".
Connecting the sink to the sewer
There is a procedure that determines how to connect the sink to the sewer. This work begins with the installation of a siphon. There is a nuance here: the presence of a hole in it intended for overflow protection indicates that this product must have a special pipe for overflow. Siphons come in bottle and S-shapes. Read also: "How to choose a siphon for a sink - varieties, differences, how to choose."
For kitchen sinks, you should use an S-shaped product, since the bottle siphon is more susceptible to clogging quickly and will need to be cleaned frequently.
The height of the sewer outlet under the washbasin and kitchen sink are different:
- for a kitchen sink this figure is 300-400 millimeters;
- The height of the sewer system for a bathroom sink is 500-550 millimeters.
- the siphon outlet is inserted into it and secured;
- a pipe (corrugated or rigid at an angle) is connected to it. It is very important to first securely fasten the sewer pipe to the wall;
- the fixed pipe is placed in sewer drain. If diameter sewer pipe for a sink, the pipe from the siphon exceeds this parameter, then the use of a special adapter (rubber sealing collar) will be required;
- check all connections for leaks.
A few important notes
Before you start connecting the sink, you need to take into account some of the nuances of the work:- to connect the kitchen sink to the sewer, you do not need to tightly tighten all the connections, since in this case the rubber sealing gaskets can be damaged;
- in the case when, when checking the quality of connections between the pipe and the cuff, there is a leak, then it is necessary to remove the cuff and thoroughly dry the surfaces that are to be reconnected. Then the dry cuff is lubricated with sealant and the connection is made again;
- To connect a double kitchen sink, you should purchase a special siphon that has an outlet to two pipes.
Every home craftsman provided that the installation rules are followed, he can connect a sink or kitchen sink with his own hands.
It is impossible to imagine the interior of a bathroom or kitchen without a sink. Installation of this product is quite simple and can be done independently, without the involvement of professionals. However, there are several nuances that must be taken into account when self-installation this type of plumbing. In this article we will talk in detail about the features of installing sinks of different types.
How to connect a sink in a bathroom? Installation largely depends on the type of washbasin. Today the following options are available:
- Tulip sink (on a pedestal);
- Wall-mounted (fixed to the wall using brackets);
- Overlay (installed on the countertop);
- A mortise sink is built into the furniture.
List of required tools
For installation you will need:
- Hammer, drill;
- Set of drills (for concrete and ceramic tiles);
- Measuring tools: tape measure, level, marker;
- Fumlenta;
- Set of open-end wrenches.
It is worth noting that according to SNIPs, the sink is installed at a height of 80-85 cm from the floor level. The exact height is determined by the height and personal preferences of the residents.
Connection to water supply
The planning of the washbasin installation site is carried out at the design stage. Water supply and sewerage pipes are brought to the installation site of the washbasin in advance. Connection for water is made using flexible hoses, for sewerage - through a corrugated siphon pipe. Initially, you need to turn off the water supply, after which you can remove the plugs from the water outlets intended for the washbasin. The instrument taps must be screwed to the sockets using fume tape (or other sealant). It is to these taps that the liner will be connected through the nuts.
Installation of mixer and siphon assembly
First you need to install the mixer and assemble the siphon. The mixer set usually includes a stud with nuts (one or more depending on the design of the mixer), washers, a gasket and connections for hot and cold water(they must be marked accordingly). We attach the connection to the mixer (don’t forget to tighten the nut with an open-end wrench). We fasten the studs, put on the rubber sealing gasket and install the mixer in the mounting hole on the side of the sink. On the other side, the gasket is also put on, and the entire structure is secured with nuts. Pay attention to the tightening force of the nuts - it should be strong enough, but without overly compressing the gasket.
How to connect a sink to the sewer? This is done using a siphon. Initially, the top cover is attached to the drain and secured with a screw; the inlet pipe is installed below (do not forget to use a gasket). The “bottle” and corrugation are usually attached at the end of the installation, after which the siphon is connected to the drain.
Note. Plastic parts Do not clamp with too much force, the material may burst.
Installing a tulip sink
How to install a tulip washbasin correctly? First you need to try on the sink and mark the fasteners. Attention! Be sure to check the horizontal installation using bubble level in two planes. Mark the mounting holes with a marker, after which you can proceed to drilling. It should be done to the depth of the dowel. We insert anchors into the dowel and hang the bowl on them. Afterwards, you should connect the sink to the water supply using nuts, and the siphon is connected to the sewer. You can install a pedestal on which the bowl will rest. In addition, it performs a decorative function, covering the water connection and drainage system.
Models on a semi-pedestal are quite common. In this case, the latter, like the bowl, is attached to the wall and serves more of a decorative function.
Installation of a suspended model
The installation principle is exactly the same. It is worth noting that main drawback Such options are that the connection system remains visible. In this case, it is worth purchasing a decorative siphon; most often, such models are made of polished steel and look quite aesthetically pleasing. First, we determine the height at which the bowl will be fixed (remember, this is approximately 80-85 cm), try it on and make markings. Check that the installation is horizontal. IN drilled holes special brackets are mounted (already included in the kit), on which the bowl is hung. After this, water and sewer connections are made.
If your bathroom is very modest in size, pay attention to compact wall-mounted washbasins that can be installed above washing machine. In this case, you will need a miniature siphon of a special design (usually just a corrugation).
Installing a sink on a cabinet
First, check whether the cabinet is interfering with communications. Please note that it must be on adjustable legs so that it can be leveled horizontally. In the inner shelves of the cabinet, you may have to cut holes for the siphon; this is done using special crowns. Place the cabinet in place, then connect the water supply and siphon. You can try on the sink, check its horizontal position, after which you can mark the mounting holes on the wall. We install plastic dowels into the holes made, after which we screw the threaded pins into them; it is on them that the bowl will be held. We install a siphon grate into a special hole in the washbasin, install the mixer, after which the washbasin is finally installed in place. We complete the installation of the siphon and screw the liner to the mixer.
Kitchen Sink Installation
Kitchen sinks also differ from each other by type:
- Overhead, that is, mounted on top of the cabinet;
- Mortise, embedded in the tabletop;
- Recessed, built into or directly placed under the countertop.
The installation of sinks of the latter type should be entrusted to professionals, since they are often one piece with the countertop.
Installation of an overhead sink
Installation of an overhead sink is carried out directly on a kitchen cabinet of a suitable size. The ends of the sink are located along the perimeter of the cabinet. First, you should try on the sink and mark the mounting holes, screw the screws into the end of the cabinet, onto which the kitchen sink will be attached. It is worth pre-fixing the mixer and siphon, which after installation will only need to be connected. When installing, do not forget about the sealing gaskets located between the countertop and the sink body. They act as a sealing material to prevent leakage under the sink.
Installation of a mortise sink
Today there are kitchen sinks with two bowls. Their installation is carried out in exactly the same way as conventional ones. However, you will need a special siphon with two terminals. For undermount sink you need to cut a hole of the appropriate size. Please note from leading edge The tabletop should be retreated at least 6 cm, from the back at least 4 cm. We apply a sink to the tabletop and make a marking, to do this we outline the sink, we retreat 12 mm from the resulting contour, it is along the second line that the cut will be made. We use a jigsaw. The end of the cut is coated with sealant, this will protect the tabletop from moisture and further swelling. A siphon is attached to the sink, a mixer and a water supply are connected. Special fixing tabs are attached to the bottom. After this, the entire structure is installed in place, the pipes are connected to the liner, and the siphon is connected. That's it, you can check the quality of work.
After choosing and purchasing a sink or washbasin, the most important stages– installation, connection to water supply and sewerage. In many ways, the nuances of installation depend on the type of plumbing fixture. The shells can be different types– overhead, cantilever (suspended), mortise. This determines the choice of siphon, specifics, and ease of connecting the washbasin and sink to the sewer.
Installation of a sink in the kitchen and a washbasin in the bathroom is carried out approximately the same way, because the purpose of the devices is similar. Most often, the home owner can do all the work himself. Eat general rules, which must be followed when installing plumbing, you should definitely know them. However, if you do not have the skills to handle tools or plan complex installation plumbers, it’s better to call a professional.
Installing a sink in the bathroom
General scheme of work for installing a sink
- Preparatory work. At this stage, the places where the sink is fixed to the wall are marked, the fasteners are screwed in and the specifics of mounting the support, if provided, are determined.
- Connection to water supply. This work can be done when the sink is already firmly attached to the wall, but it is better to install the faucet in advance.
- Securing a plumbing fixture. At this stage, you need to securely fix the sink on fasteners and supports, and finish connecting to the water supply.
- Connecting the sink to the sewer. This is the final stage of work. Need to be installed correctly plumbing equipment, achieve tightness of connections. The ease of use and the presence/absence of blockages in the future depend on the correct connection of the washbasin to the sewer.
Sink or sink installation diagram
Stage #1: preparing fastenings for the sink
If selected simple model without additional accessories, and a washing machine or other device will not be installed below, then optimal height sinks – 850 mm. The plumbing fixture will be convenient to use, and you can do the installation of the siphon and connect the sink to the sewer yourself, because there will be enough space, and access to all elements of the system will remain free.
For a model with a support, the height is determined depending on the height of the leg or furniture in which it will be mounted. When it is decided where the sink will be installed, draw a straight horizontal line on the wall. The device is applied to the line, the attachment points are marked. This is difficult to do alone, so you need an assistant to hold the sink. If the plumbing is installed on a leg or piece of furniture, the task is simplified.
Using the finished markings, holes are made in the walls, dowels are driven in and studs are installed for fastening. The depth of screwing in the studs should be such that the device is securely fixed, but at the same time freely placed on the mounts. As a rule, everything necessary details included with the sink. When installing, you need to use all of them so that there are no unnecessary parts left.
Diagram: installation height of a washbasin in a bathroom
Height of sink above washing machine
If you plan to place a washing machine under the sink, then a “water lily” type model is best suited. Its drain is equipped so that there is enough space under the sink. There are two types of drain: the first is directed backwards, and the second is directed downward.
Constructions of the first type are left more space for the machine, however, due to the bends, frequent blockages are possible. The downward drain is designed so that water flows normally through the pipes, but the sink will have to be placed higher above the machine. The height of the plumbing fixture is calculated individually.
To make the sink more convenient to use, it can be moved slightly forward from the wall. Then, when washing, a person will not rest his feet on the machine. This simple trick will help you save as much as possible. usable area without compromising operating comfort.
Diagram: installing a washbasin above a washing machine
Stage #2: connecting to the water supply
To install the faucet, insert a mounting pin into it, then connect the water hoses and carefully tighten them so that they are secured tightly, but not excessively. Next install sealing gum, washer, nuts (they are tightened with a wrench).
The main thing is that after installation the mixer is positioned correctly: its spout should be placed at right angles to the wall on which the sink is mounted. You should also pay attention to the tightening of the nuts. Once the mixer is already secured, it will no longer be possible to tighten them more tightly, so you need to immediately do everything efficiently and check it.
Kitchen sink mixer
Master class on installing a mixer
Step #3: attaching the washbasin to the wall
When the mixer is already installed on the sink, you need to attach it to the wall and complete the connection to the water supply. To do this, place the device on the prepared mounting studs, install the plastic inserts that are supplied in the kit, and tighten the nuts. If there is a support under the sink, then place it on it.
There should be a rubber seal under the tap. It is placed above the nut. The seal will not prevent you from tightening the nut in the future, so do not tighten it too tightly. If the tap leaks when checking the connection, simply tighten the connection tighter.
Stage #4: connecting the sink to the sewer
How to connect a washbasin to the sewer? This stage is final. A siphon is connected to the plumbing fixture, to which a pipe is attached - corrugated or rigid with a bend. Then the pipe is connected to the sewer. If its diameter does not coincide with the sewer outlet, use a special rubber adapter.
When the work is finished, all that remains is to check the tightness of the connections. To do this, open the taps and run them through the pipes with a dry hand or a white napkin. If everything is normal and there are no leaks, the plumbing is ready for use.
Connecting the sink siphon to the sewer
Choosing a siphon - important nuances
Normal operation of plumbing fixtures is only possible if the siphons are correctly matched to sinks and sinks. Otherwise, you may face the problem of constant blockages. There are several types of devices:
- Pipe. These siphons resemble the letters S or U in appearance and can be collapsible or non-removable. There is a special plug at the bottom, which you can remove to easily clean the siphon. When installing a pipe siphon, it is important that the sink drain and the inlet into the sewer line coincide.
- Bottled. The siphon gets its name from the part in which the water seal is located. It is shaped like a bottle. The siphon is connected to the sewer using a straight line or flexible pipe. The device is compact, easy to maintain: it is easy to disassemble and clean. The disadvantage is that you have to clean it often, because due to complex shape The siphon often gets clogged.
- Hidden. This is a type of bottle siphon. During installation, only part of the structure (pipe) is visible, and the second part (bottle) is installed in the wall. Such siphons are quite expensive and difficult to install.
- Corrugated. The siphon is made in the form flexible tube, which is suitable for all types of sinks. Such devices are cheap and easy to install, but they internal walls quickly become overgrown with grease and soap residue, and the pipe cannot be disassembled.
Pipe S-shaped and bottle siphons
Which option is better to choose?
For installation under a kitchen sink, it is better to choose a pipe siphon in the shape of the letter S, because... Sewerage elements are often clogged with grease and kitchen waste, and such a device is easier to clean. For a bathroom sink, you can choose either a pipe or a bottle siphon, since here sink clogs are less common. If access to the device is free, then even if it becomes clogged, the problem can be easily solved.
As for materials, siphons can be made of polyethylene, polypropylene, brass or bronze. The most reliable models are metal, but polypropylene models successfully compete with them due to their lower price and acceptable quality. In addition to the shape and material, when choosing, you should take into account the diameter of the neck, the presence of an overflow and the design, if the model will not be covered by a cabinet or sink leg.
Video: how to connect a sink to a sewer
When connecting the washbasin and sink to the sewer, do not tighten the nuts too much. This can negatively affect the condition of the rubber gaskets and cause them to fail prematurely. If the connections leak, the gasket can be removed, dried, treated with sealant and reinstalled, and the connection can be tightened.
The sink drain, like any other plumbing equipment, is vulnerable to breakdowns and often the home handyman is faced with the question of replacing the device. Its installation is a simple procedure, for which there is no point in inviting a professional plumber.
Let’s take a closer look at how a sink drain works and what nuances to consider when choosing a device. We will also describe step-by-step technology assembly and installation of the drainage device.
A sink drain in a bathroom or kitchen with an overflow is a curved structure, the key purpose of which is to redirect excess water into the drain, thereby preventing the sink bowl from overflowing.
Do you want to install a more durable device that is less prone to clogging? In this case, it is better to purchase a design in the form of an overflow drain for the sink. It differs from traditional models in that it is equipped with an additional tube.
This device connects a hole made in the upper side of the side of the bowl with the elements of the drainage system located in front of the siphon. Thanks to this, the overflow drains liquid from the sink, thereby preventing the bowl from overflowing.
Conclusions and useful video on the topic
Video review on how to properly assemble a siphon:
Sink installation and drain connection:
Modern sink drain models are not that difficult to install. The main thing is to correctly select the model that is optimally suited for specific conditions, and strictly adhere to the installation instructions.
We invite everyone interested in installing a sink drain to leave comments and ask questions. Please share personal experience plumbing connections. The contact form is located in the lower block.
If you are thinking about how to connect a washbasin to the sewer and water supply system, you should initially determine who will be entrusted with the work.
It does not involve performing complex actions, therefore, if you have basic skills and the necessary tool You can cope with the task yourself.
Connecting the washbasin to the sewer
Having decided to install a sink or washbasin with your own hands, you first need to choose the installation location.
It should be as close as possible to the water supply and sewage system.
The mounting height of the sink is on average 850 mm.
If there is a leg, then the issue is resolved by itself.
Correctly connecting the washbasin to the sewer
Before you begin, you should prepare the following tools and materials:
- tape measure and building level;
- pencil for marking;
- drill or hammer drill;
- dowels, fastening studs, nuts and plastic inserts;
- wrench and open-end wrench;
- hoses;
- siphon;
- rubber sealing gaskets.
Tools you'll need
Now all that remains is to install the sink and connect.
The first step is to apply markings to the wall, noting where the sink will be attached.
After this, you need to screw in the mounting pins on which the sink or washbasin will be mounted.
It must be remembered that the part of the stud protruding from the wall should exceed the thickness of the sink itself by 1.5 cm.
This will allow you to easily secure the sink with special nuts after installing it on the fasteners.
Once the fastenings are prepared, you can begin installing and connecting the sink.
Sink installation
Connection to water supply
To connect a sink or washbasin to the water supply, you will need to follow these steps:
This is how the sink is installed
- install the faucet on the sink. To do this, you need to screw one or two mounting pins into it, depending on the design, and install hoses for supplying hot and cold water. They need to be tightened with moderate force, because after installing the faucet on the sink, it will no longer be possible to tighten them;
- pass the hoses through the corresponding hole in the sink;
- put the sealing rubber on the mounting studs on the reverse side;
- put on the pressure washer and attach the fastening nuts;
- tighten the fastening nuts with an open-end wrench, controlling their tension;
- fix the sink on the mounts previously installed in the wall or on the leg;
- bring the hoses for hot and cold water from the mixer to the corresponding outlets of the water supply system, fix them with wrench. First, it is recommended to install an intermediate rubber gasket, which will increase the tightness of the connection;
- check the quality of work by turning on the water. If necessary, tighten connections.
After the connection to the water supply has been completed, all that remains is to connect the washbasin to the sewer.
The work is not difficult, but you should still read the step-by-step instructions first.
Connecting the drain to the sewer
To solve the problem, you need to follow this sequence of actions:
Connecting the sink to the sewer
- connect a siphon to the sink. For the kitchen it is better to use an S-shaped product, and for the bathroom - a bottle one. Last option more prone to blockages, so not suitable for the kitchen;
- connect to siphon drain pipe. For the kitchen you should use corrugated, for the bathroom – hard;
- insert the free end of the pipe into the sewer outlet. If the pipe is narrow, then you should use a special rubber adapter - a cuff;
- Check connections for leaks by running a certain amount of water into the sink.
Connecting a plastic siphon and sink corrugation
So P The connection of the sink to the sewer can be considered complete.
Before you get started, you should also know that it is not recommended to over-tighten pipe connections.
In this case, there is a risk of damage to the rubber sealing gasket.
A connected sink to the sewer looks like this
If a leak is detected when checking the connections, remove the cuff and dry it well.
It is resistant to moisture, hardens in just a few hours, which allows you to start using the sink after this time.
This is what a double siphon looks like
When you need to connect two sinks to the sewer, you should purchase a double siphon. It has two pipe outlets.
This will allow you to cope with the task much faster and easier.
Connecting a sink by professionals
In fact, the work does not involve performing complex actions.
But, if you doubt that you can cope with it yourself, it is better to seek help from professionals.
Our technicians will install and connect the sink in a matter of minutes, eliminating any installation errors.
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