The construction of any building involves the arrangement of utilities; most often, special wells are used in their design. Such designs make it possible to easily and quickly maintain systems as needed, ensuring operational safety and reducing the risk of emergency situations. The design of such systems involves the use of polymer hatches that are installed on manholes .
general description
Until recently, the most commonly used products made of cast iron. Polymer hatches are elements made from a number of components, including composite ingredients. In the manufacturing process, hot pressing technology is used. Polymer-sand sewer manhole is one of the varieties of the mentioned products. Among other things, classification is carried out according to the intensity of the load on the surface of the product. According to this principle, some groups of goods should be distinguished, namely heavy and light.
Hatches marking
Sewer hatches polymer-composite are produced with an indication of the appropriate marking, which determines the direction of application. When buying, you need to pay attention to the abbreviation located on the front surface of the structure. The letters G and PG indicate that the product is intended for ground and underground protection of a fire hydrant. “B” indicates the possibility of using hatches in water mains, while the letter “D” indicates that the sewer manhole is used as a stormwater.
Key positive features
Square and round polymer sewer hatches have significant advantages if compared with analogues made from other materials, such as wood, steel or cast iron. The positive features include a long service life, which lasts more than 50 years. Among other things, the products are quite resistant to corrosion and destruction, which could occur when exposed to any kind of aggressive environment. Installing products is quite simple, since they have a small weight, the mass of one unit of production can vary from 10 to 35 kilograms. This fact facilitates the transportation process. The duration of life is also due to its high resistance to solar radiation. On sale you can find a wide range of models that have various decorative features, as well as shades. The structures perfectly undergo high temperature, they can be operated at a wide temperature range from -10 to +50 degrees. Due to the fact that there are no toxic substances in the composition, the described products can be called environmentally friendly. Polymer sewer manhole, the technical characteristics of which are presented in the article, can be used instead of cast iron products, which indicates interchangeability. Consumers note a high level of protection, this indicates that the products are equipped with special locks that exclude the possibility of theft.
Varieties in form
Sewer manholes made of cast iron, plastic, polymer, plastic are produced in a factory taking into account different shapes. Thus, round structures are required for private or repair work in sewer wells. This form is used most often in comparison with others due to the fact that the viewing shaft suggests the need to install just such products. Choosing a specific model, it is necessary to be guided not only by operational qualities, but also by dimensions. If we talk about the general purpose hatch, then we should consider the main qualitative characteristics of the structure, among them the inner and outer diameters of the shell. It should be mounted on the upper end of the well, while its parameters should correspond to the neck dimensions as much as possible. If you are interested in the dimensions of polymer sewer manholes, then you need to know that on sale you can find designs with an inner opening diameter ranging from 315 millimeters to one meter. If there is a need, then square items can also be preferred; there are no restrictions on the typical dimensions of such hatches. Manufacturers make them with a certain step, which is equal to 50 millimeters. The smallest size is 300 millimeters, while the maximum is 800 millimeters. When choosing the sizes of polymer sewers, it is necessary to pay attention to the fact that the cover can be airtight or have special slots. The latter option is used to equip storm sewers in both private and industrial construction.
Hatch Recommendations
Not only the dimensions of polymer sewer manholes are important, but also the adherence to the technology during their installation. The master will have to lay the gasket, install the hatch itself, after leveling the surface. A number of professionals recommend additionally mounting hinges on which the lock is hung on the hatch and rim of the well. If there is a shutter hatch, check for gaps and cracks every year. They can affect the efficiency of the system. If any damage has been noticed, it is recommended to replace the product. If the hatch was installed in a northern region or in an area with a high level of rainfall, then additional protection of the hatch should be made using a special panel. It can be made of various membrane materials, but traditional foam can be used as an alternative. Thermal panels, as well as other similar coatings, are also suitable. This will protect the product from the negative effects of the environment and extend its life. Regardless of condition, it is recommended that the cover be replaced every seven years.
Installation of a polymer hatch
Whatever sizes of polymer sewer manholes you choose, installation works are carried out using the same technology, the process will not be difficult. Initially, a ring is installed on the ceiling, which is made of reinforced concrete. Next, the ring is poured with concrete of a suitable brand. At the next stage, the master must install the manhole cover in the ring. However, these manipulations should only be performed after the concrete has hardened. The product must be placed strictly horizontally in relation to the surface of the earth. Raise it above the soil should be 5 cm.
It is important to equip the blind area, which is located around the polymer hatch. It should have a slope to remove excess moisture. It should be given a width ranging from 1 to 1.5 meters. If you want to simplify the work, you need to choose models that have special mounting grooves.
Cost
If you decide to use a polymer sewer hatch, the price of this product should certainly interest you. Having visited the store of relevant goods, you can purchase a hatch by paying 800 rubles per unit.
Conclusion
Recently, when equipping engineering systems, the most commonly used polymer sewer hatch is the price of such a product is affordable, which is why designs of this kind have become widespread both in industry and among private consumers. Perhaps you should pay attention to such a solution.