• -5%
Rainwater storage tank set Roma BK 750 with hose
  • Rainwater storage tank set Roma BK 750 with hose
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Roma BK rainwater tank set with hose 750l
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1,809.00 PLN 5%
1,718.55 PLN tax incl
1,397.20 PLN tax excl
The price has not changed
ZBBK0750
Capacity:
Delivery from 227.55 PLN
On request approx. 14 working days
Ask about the product
  • Gray tank
  • The set includes a drain hose and a tap
  • Available capacity: 750 l and 1000 l

 

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Product compliance details: Manufacturer responsible for the product

Responsibility for the Product

MPI

Manufacturer MPI Group Sp. z o.o. Magazynowa 5 62-070 Zakrzewo Poland biuro@mpi.com.pl

MPI Group Limited Liability Company is a company that has been in business for more than 15 years, offering comprehensive solutions in the selection, sales, commissioning and service of environmental equipment, including rainwater management systems, tanks, water systems and filtration. The company combines manufacturing, integration and distribution activities, providing equipment for both individual and institutional customers - hospitals, schools, health centres, hotels. MPI's products are individually designed, tailored to the specific application.

MPI ensures that the products offered are certified to European standards and CE marked. The company has positive opinions of the Institute of Environmental Protection, NIZP (formerly PZH), has a technical approval of the Building Research Institute and a National Technical Assessment, which confirms that the equipment meets building and technical standards in force in Poland.

Roma BK rainwater tank set with hose



The Roma set consists of a tank for rainwater and BK food liquids, a drain hose and a decorative tap. The tank is available in gray with a capacity of 750 l and 1000 l. The great advantage of the rainwater tank is its dimensions - it is narrow but relatively high. This makes it ideal for gardens that have limited space.


The BK rainwater tank is made of high-quality polyethylene. Polyethylene is resistant to changes in ambient temperature between - 40 °C and +60 °C. However, remember to empty the tank for the winter. Water changes its volume under the influence of temperature and may burst the tank. Polyethylene does not corrode and does not fade under the influence of UV radiation. Rainwater tanks are rotationally molded, so they have no welds or joints. This minimizes the risk of leakage. The tank is certified by the National Institute of Hygiene.

BK tank dimensions


Set name
Capacity [l]
Height [mm]
Width [mm]
Lenght [mm]
Diameter of the inspection hole [mm]
Roma BK 750
750
1620
730
730
350
Roma BK 1000
1000
1870
780
780
350

DIAGRAM OF A COMPLETE RAINWATER STORAGE TANK SET

Schemat podłączenia zbiornika dekoracyjnego na deszczówkę

To complete a complete garden rainwater harvesting tank set you need to :

1. select a DECORATIVE TANK, which matches the colour scheme of your surroundings and has a capacity suitable for you.

2. measure the diameter of the downpipe and select a suitable RAINWATER COLLECTOR .

3. match the diameter of theconnecting hose between the collector and the tank (most collectors have an outlet of 32 mm)

4. match the TANK with the colour of the rainwater tank.

If you wish, you can equip the set with a DRAIN HOSE to empty the tank during winter.

INSTALLATION DIAGRAM OF THE COLLECTOR

Jak podłączyć zbieracz wody deszczowej- schemat montazu

This short guide will help you choose the right capacity for your underground rainwater storage tank - without difficult formulas. We will show you how to estimate your needs, count the amount of water from your roof, select the capacity and plan a simple garden installation.

Step 1: Determine what you will use the rainwater for.

List the uses: watering the garden, flushing toilets, laundry, washing the car, housework. This will allow you to estimate the real need for water in a typical week.

  • Garden watering - take a guideline of 20-25 l/m² per month per season.
  • Toilet flushing - approximately 35-50 l/person/day.
  • Laundry - approx. 15-20 l/person/day.
It is advisable to select a tank for 2-3 weeks of typical use - in practice there is no point in storing 'for the whole year'.

Step 2: How much water you collect from the roof (no complicated formulas)



In simple terms, assume: annual rainfall × roof area × runoff coefficient. For most roofs, you can assume a coefficient of around 0.9 (depending on the roofing and the layout of the gutters).


Brief example: calculation of possible rainwater yield

Roof 120 m², annual rainfall ~600mm (approx. 600 l/m²). Estimate: 120 × 600 × 0.8 ≈ 57,600 l/year. This figure helps to select the capacity for a period without rain. And a period without rain can last for 3 weeks. Therefore, you must divide the result by 21 days. That is: (57600 l /365 days)*21 days = 3314 l, the result according to the estimation should be taken as a minimum. Therefore then we choose 4000l , 5000l, 6000l tanks - because of how we will use the rainwater.

Step 3: Selecting the tank capacity

It is most practical to select a tank that will store a supply of water for 2-3 weeks of your needs.

Schemat obliczania pojemności zbiornika na deszczówkę – opad roczny × powierzchnia dachu × współczynnik spływu
How to calculate capacity: annual rainfall × roof area × runoff coefficient ≈ annual amount of rainwater to be collected.

  • 2000-3000 l - small garden, 1-2 people.
  • 4000-6000 l - family of 3-4 people + garden 200-300 m².
  • 8000-10 000 l - larger garden, intensive watering. 300 m² - more , and with automatic watering.
But you will do this more precisely using the selection calculator below:

If you prefer, open the calculator in a new tab: Tank selection calculator. If you have any problems, please contact our customer service.

Step 4: Tank selection - material

In detached houses, underground rainwater tanks are the best choice - they do not take up space in the garden, provide stable temperatures, no water freezing and allow larger capacities without affecting aesthetics.

The best material is PE, HDPE, MDPE plastic - it is lightweight, corrosion resistant, easier to install and above all airtight for many years .
It is worth paying attention to water and ground conditions. If the ground water level is high or the soil is clayey, flat tanks such as the F line, Bolt, Eco line Slim, etc., are the best choice.
On the other hand, if the conditions are normal, any solution can be used. If you have any problems, please contact our customer service.

Step 5: Simple installation in the garden

The simplest arrangement: gully filter in front of the tank or basket filter, underground tank, floating intake, automatic pump and point of use (tap). This makes watering convenient and economical.


Podlewanie ogrodu deszczówką ze zbiornika podziemnego – przykład zastosowania w domu jednorodzinnym

Summary:

  • Estimate the weekly consumption (garden + house).
  • Calculate the roof potential (rainfall × area × ~0.9) and divide by 365 days and multiply by 21 days ( 2-3 weeks of drought).
  • Select an underground storage tank taking into account the yield (calculated from the roof area) and contrast it with the consumption e.g.: water in the garden. Select capacity
  • Add a filter, pump and collection point, or choose an off-the-shelf solution: Rainwater systems for the garden

FAQ: How to choose a rainwater storage tank

What capacity to start with?

For example: family of 3-4 people + garden of 80-150 m² → 4000-6000 l usually works well. Larger garden / intensive watering → 8000-10 000 l. Verify with the calculator above.

Is it possible to supply toilets with rainwater?

Yes - using a suitable system (rainwater control unit/automatic switchover) and filtration.

What about excess water?

Plan an overflow to an infiltration or rainwater drain in accordance with local regulations.

Related tips and tools

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Nazwa Capacity Image Unit price

Roma BK rainwater tank set with hose

 750l
Roma BK rainwater tank set with hose
1,809.00 PLN – 5%
1,718.55 PLN Brutto
1,397.20 PLN Netto

Roma BK rainwater tank set with hose

 1000l
Roma BK rainwater tank set with hose
2,190.00 PLN – 5%
2,080.50 PLN Brutto
1,691.46 PLN Netto

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