In order to exclude the possibility of sewage gases entering the premises, various devices are used that differ in configuration. The easiest option is to install a sewer drain with a water trap. However, its use is not justified in all cases, therefore, there is another option - a ladder with a dry shutter.
The design features of a shower or hydrobox in most cases allow you to install only a special type of siphon - a dry gangway
Content
Scope and features
A gangway is a device that performs a number of important functions. Consider the main ones:
- connection of plumbing equipment to sewer communication;
- fluid filtration before disposal;
- water removal to the drainage system;
- creating a shutter that prevents sewer gases from entering the room.
In order to bring the plumbing fixture to the sewer network, siphons of various designs are used. A trap with a water trap cannot be used if it is necessary to remove water into the sewer system from the floor surface of showers or baths. Installation of a siphon with a water seal is not possible in this case for a number of reasons, however, the main one is the lack of space.
In such situations, it is customary to use a sewer ladder, which is an equally effective device. It provides effective removal of water from a horizontal surface.
Important! Gangways, as well as siphons, can have sewer water locks, but in conditions of periodic use, gangways with water locks are not relevant.
The shower ladder performs the same functions as the siphon - it receives, filters and discharges drains into the sewage system, prevents the penetration of gases from the drain pipes into the house
This is due to the fact that water that is located in the gate prevents the sewer gases from entering the room. With constant use, the water level remains unchanged, as it is replenished from time to time. Accordingly, with periodic use, the water located in the drain ladder with a water seal will simply dry out, as a result of which the way for sewer gases will open and they will begin to penetrate into the room. For these cases, a dry type sewer shutter is needed.
In addition, the drying out or breakdown of the hydraulic lock can cause the following circumstances:
- warm floor;
- high temperature in the room;
- improper arrangement of sewer communication.
It is worth noting that even the fan ventilation installed in accordance with all the rules will not always help when the water plug is dry. Therefore, the only right solution in such circumstances is a dry water seal.
Varieties of dry gangways
To date, the ladder for the shower is represented by several types that differ in design and working principle:
Membrane This variety is quite common and functions due to water pressure. Under the pressure of the liquid, the gate of the ladder opens, and then returns. Returning to the starting position occurs using the spring element.The membrane shutter is reliable and effectively prevents the penetration of sewer odors into the room.
Ladders differ in design and shape, the most common is the membrane type
Float. They function due to a structural element - a float, which, when water passes through the drainage valve, is always located at the top, and when water leaves, it sinks to the very bottom, thereby blocking the passage. From a structural point of view, such a device is considered to be very simple and, if necessary, can be made with your own hands, using a plastic ball as a float.
Pendulum. Pendulum dry gangway is the most complex device. Its principle of action is based on the molecular memory of the material. Such a mechanical device constantly strives to occupy a certain position in which access to the sewer pipe will be blocked.
Dry type shower drain is made from fairly durable materials. The case, as a rule, is made of plastic, and the decorative grille is made of stainless steel. If necessary, you can purchase a device with a built-in check valve. It is used instead of fan ventilation and performs a protective function, preventing unpleasant odor from entering the sewage system.
In addition, there are devices that can be used at low temperatures in rooms without heating devices. You can also pick up a heavy-duty sewer shutter, resistant to high mechanical loads.
Key Specifications
Before you purchase a dry sewer, you need to study its technical characteristics. First of all, pay attention to such points:
- branch location;
- tap section indicators;
- height;
- bandwidth coefficient.
To get a suitable ladder, you need to know exactly its size and diameter of the drain hole
The outlet for shower drains with a dry shutter can have two location options:
- vertically;
- horizontally.
The next factor that you should pay attention to is the indicator of the cross section of the tap. To date, on sale you can find devices that have a diameter of 50 and 100 mm.
Helpful information! For economic purposes, products are used that have a branch of 50 mm, and ladders with a cross section of 100 mm are used in public showers and bathhouses. The second version of the device is capable of providing waste disposal at a speed of more than 2.1 l / s.
Before purchasing this device, great attention should be paid to such an indicator as the height of the ladder. Today, there are models whose height ranges from 7 to 18 cm.
Tips for choosing a device
When choosing a dry sewer ladder, experts recommend paying attention to the following points:
- First you need to determine the number of risers. As mentioned above, for private purposes, a sewer shutter with a nominal diameter of 50 mm is perfect;
- a device with a horizontal outlet can be mounted in a limited space and has a height of 6 to 10 cm, and a device with a vertically located outlet requires at least 15–18 cm of space. Before installation, it is necessary to take measurements and determine which sewer shutter is suitable for your case.
- It is recommended to check the condition of all structural elements of a dry sewer ladder before purchase. It is also advisable to check how it functions. To do this, you can pour water from a bottle into it.
A device with a horizontal outlet can be placed in a space with a height of 6 cm
After you decide on the technical indicators, you can begin to choose the appearance of the device. The grate of the ladder can be made of different materials and have different perforations.A variety of design solutions allows you to choose a device that easily fits into the interior of the bathroom.
A variety of design solutions
Today on sale you can find many dry gangways, which have their own, unique configuration. There are three main types of gangways, depending on the shape:
- angular;
- round;
- rectangular.
Corner ladders are mounted in the corner (hence the name) and are almost invisible. Rectangular and round fixtures may be installed in any part of the bathroom. Of great popularity in the plumbing market are plastic, steel and combined models.
The gratings for the ladder differ in the pattern of slots, perforations, etc. The assortment of gratings is incredibly wide. And also there are products that have LED backlight. Equipped with a backlight, the drain is able to create a unique atmosphere in the bathroom. However, the cost of such a device is higher.
Depending on the design, the ladder is installed in the center of the floor or in any corner, and the grille can play a decorative role, complementing the interior
There are also quite a lot of budget options, so choosing the right option for a particular case will not be difficult. It is worth remembering that the appearance of the device is secondary. The main thing that you need to pay attention to when choosing such a device is the technical specifications. This will allow you to purchase an effective product that will last for many years.
Installation of a dry sewer
The installation of such a device as a dry sewer is a fairly responsible measure. From the correct installation depends on how high quality and how long this device will last.
Installation of the dry type does not differ from the installation of a ladder with a water shutter. When installing, a necessary condition is the rise of the floor in the shower or bath room. Therefore, it is necessary to take care in advance to ensure that the floor is made at a certain slope to the sewer ladder with a dry gate. This will ensure the removal of water from a horizontal surface.
Installation of such a floor involves the arrangement of a system, which includes such layers:
- Thermal insulation material, which also creates sound insulation. Sound insulation is a rather important parameter, providing a quiet drainage of water from the plumbing fixture to the sewer system. Expanded polystyrene is actively used as such a material.
- Cement mortar screed.
- Material that allows for waterproofing. As a rule, such material is produced in rolls and has a membrane structure. However, there are more modern options. For example, coating waterproofing, which is applied as a paint.
The base should have a bias towards the ladder, only in this case the water will leave completely
Note! There is one important rule: the fixture grid should go on the same level with the floor and should not be higher than the tiles that are located around its perimeter.
- Cement screed, which forms the desired slope towards the drain device.
- Floor tiles, which are placed on a special adhesive solution. It is desirable that the tile has a low coefficient of water absorption and a rough surface. The organization of such a floor will ensure effective drainage of water into the sewer system.
Consider several recommendations for laying tiles on the floor in the shower:
- laying ceramic tiles on the floor must be done from the ladder;
- seams between tiles should have a thickness of not more than 2 mm;
- when finishing joints, special grouts are used, which should be resistant to the aquatic environment;
After the installation work, the drain device will be reliably concreted in the floor.It is not recommended to carry out the installation of a dry sewer shutter, having no special knowledge in the construction field. This is due to the fact that a beginner can make a lot of mistakes. If necessary, the best choice will be to contact specialists who will help you determine the materials, the type of ladder, and also conduct quick and high-quality installation.
