Rectangular septic tanks self-supporting
Rectangular septic tanks are sealed tanks made of polypropylene plastic with a wall thickness of 8 mm. They are manufactured as single welded pieces, and designed to be installed in the ground.
Embedding is carried out on a flat concrete foundation. Rectangular septic tanks are self-supporting and designed to be covered with soil. If the septic tank is to be driven on or in case of groundwater, the septic tank must be set into concrete.
Why Rectangular septic tanks self-supporting from Kellner?
We have many years of experience in the manufacture of plastic sumps and other products. We have manufactured tens of thousands of products over the lifetime of our company.
We are a manufacturing company operating in the field of creation and environmental protection.
We have earned the trust of customers literally from all over the world. For all our customers, we are a responsible and serious partner who never leaves them in the lurch.
We respect innovation and therefore use the most modern technologies. Thanks to this, our products are reliable, of high quality and fully meet the needs of the modern market.
We are a flexible partner that supplies products to both individuals and companies from the B2B sector. Our product spectrum and rich know-how enable us to meet the needs of all our customers.
Our certification according to the ISO 9001:2009 quality system is also a guarantee of high standards.
Dimension table
| Catalog designation | Net volume [m3] | Dimensions | Height | Weight [kg] | |||
| Diameter D1 [mm] |
Diameter D2 [mm] | Height H [mm] | Inflow [mm] | Outflow [mm] | |||
| PP SEPTIK ER 3 | 3 | 2000 | 1160 | 2080 | 1750 | 1700 | 400 |
| PP SEPTIK ER 5 | 4,6 | 3000 | 1160 | 2080 | 1750 | 1700 | 560 |
| PP SEPTIK ER 10 | 6,8 | 4000 | 1160 | 2080 | 1750 | 1700 | 690 |
| PP SEPTIK ER 12 | 8,6 | 4160 | 1500 | 2080 | 1750 | 1700 | 870 |
| PP SEPTIK ER 15 | 10,8 | 3500 | 2160 | 2080 | 1750 | 1700 | 910 |
| PP SEPTIK ER 20 | 14,1 | 4500 | 2160 | 2080 | 1750 | 1700 | 1080 |
Detail information
Advantages of square septic tanks:
- Low weight of the square septic tank
- Long service life of the square septic tank
- Dimensional variability according to needs
- Easy installation of the square septic tank
- 100% sealing of the square septic tank
- Multiple septic tanks can be connected
Why choose self-supporting square plastic septic tanks from us?
KELLNER has been operating in the Czech Republic for more than 25 years. We have many years of experience in the production of plastic self-supporting square septic tanks, which has always made our customers satisfied.
As far as the range of plastic septic tanks is concerned, you can choose from several types of septic tanks with different volumes, dimensions and in different price categories. At the same time, we offer the possibility of producing a square self-supporting plastic septic tank tailored to your requirements.
People search for these products on the internet through the terms: square septic tanks, self-supporting septic tanks, plastic square septic tanks, plastic self-supporting septic tanks.
Files for download
Frequently asked questions
This is just another name for a technical water tank, including rainwater tank, which is used to hold water and then use it. Retention tanks are distinguished between self-supporting and non-self-supporting tanks, and according to the material, most often concrete and plastic retention tanks.
The size of the rainwater tank depends on several factors that you should consider when determining the appropriate size of the rainwater tank:
- Roof size: the area of the roof from which rainwater will subsequently be discharged into the retention tank is the determining factor. The size of the area and the average rainfall in the area are calculated as part of the calculation of the expert opinion for the "Rainwater harvesting" grant.
- Climatic conditions: the amount of rainfall in the area where the rainwater harvesting areas are located.
- Water consumption: you need to think about how you want to use rainwater? Will it be used only for watering the garden, flushing the toilet, washing the car or for other purposes? According to this, it is advisable to determine how big a rainwater tank you need.
- Length of the dry season: if you live in an area with long periods without rainfall, you will need a larger rainwater tank to be able to "store" more water for the dry season.
- Available space: how much space do you have available to install a rainwater tank
How much space do you have available for rainwater harvesting? This is also a consideration when deciding how large a rainwater tank to install
to choose.
It is important to make a detailed calculation based on your specific situation and needs. You should also consult with a water or ecology expert to help you decide on the appropriate size of the rainwater tank.
Standard plastic tanks and sumps have several main advantages over concrete ones.
Plastic tanks and sumps have less weight than concrete structures. This makes them easier to transport, handle and install.
Plastic tanks and sumps are resistant to corrosion and erosive processes, making them suitable for storing or processing aggressive chemicals or other corrosive substances. Concrete may be sensitive to certain chemicals and may require protective coatings or other treatments.
If the focus is on durability, then plastic tanks and sumps typically have an equal or longer service life. They are resistant to weather effects such as temperature and humidity changes and are not prone to cracking and material destruction, which affects their strength and functionality.
Plastic tanks and sumps do not require as much maintenance as concrete structures. The plastic material is smooth and does not absorb substances, making it easier to clean and remove debris.
Plastic tanks and sumps are usually cheaper to manufacture, transport and install than concrete tanks.
The method of payment always depends on our mutual agreement. In the case of legal entities it is usually a form of invoicing, for individuals we prefer payment in cash. For all orders we charge a partial advance payment for materials.
For each product you will find links to datasheets, wiring diagrams and a range of additional information.
Yes, all our products are tested and approved by the state testing laboratory TZÚS Prague.
Check out our references
Each order is a new challenge for us, in which we connect the functionality of the products and their aesthetic side. Any project, big or small, gives us the opportunity to use our skills to create a unique product.