Drinking water separation stations
Standardised safety for domestic, commercial and industrial applications
Our drinking water separation stations ensure safe, standard-compliant separation of drinking and non-drinking water - reliable, efficient and designed in accordance with DIN EN 1717.
Learn more nowSIGURA 9 separating station
35 l/min at 30 m delivery head
to the product
SIGURA 350 separating station
Delivery rate up to 120 l/min
to the product
Drinking water protection
through standardised separation
Drinking water installations must be reliably protected against non-drinking water flowing back into the supply network. A standard-compliant separation station ensures this protection by providing the necessary free outlet and thus creating a physical, safe separation between the two water systems.
Thanks to this safeguarding design, modern systems fulfil the requirements for a safe drinking water station and ensure that the water quality is maintained at all times - regardless of the intended use or changing operating conditions.
Protection of the public drinking water supply
DIN EN 1717 and DIN 1988-100
The public drinking water supply is subject to strict legal and standardisation requirements. DIN EN 1717 and DIN 1988-100 define how drinking water must be protected against backflow, backpressure or backsiphonage from non-drinking water systems. The free outlet for drinking water plays a central role here, ensuring that there is always an open, non-bridgeable separation between the drinking water installation and the downstream system.
Drinking water separation stations are designed as safety separation stations, which are specially designed for category 5 liquids. They therefore exceed the requirements placed on simple pipe separators in accordance with the Drinking Water Ordinance. They prevent potentially contaminated water from entering the supply network and thus permanently safeguard the quality of the drinking water.
Liquid categories
according to DIN EN 1717
- Category 1: Water for human consumption, taken directly from a drinking water installation
- Category 2: Liquids that may be altered in terms of taste, odour, colour or temperature
- Category 3: Liquids that may contain toxic substances
- Category 4: Liquids that may contain toxic, radioactive, mutagenic or carcinogenic substances
- Category 5: Liquids that may contain microbial or viral pathogens
SIGURA 9 and SIGURA 350 in comparison
Selecting the right separating station
The SIGURA series offers solutions for applications of different sizes - from domestic installations to industrial consumers. Both separating stations work according to the same safety principle, but differ in terms of capacity, tank size and the pump technology used. This means that both compact systems and larger installations can be operated reliably and in compliance with standards.
While the SIGURA 9 separation station is primarily designed for smaller supply units, the SIGURA 350 separation station, with its significantly larger storage volume and more powerful pumps, offers the necessary capacity for commercial, agricultural or washing systems. This means that drinking water installations can be equipped with a suitable separation station to suit requirements without compromising on safety or efficiency.
Technical features
Models from compact to commercial
The SIGURA 9 and SIGURA 350 differ primarily in their tank volume, the built-in pump technology and the maximum delivery rate. The compact SIGURA 9 has a 9-litre storage tank and a multistage centrifugal pump, which is designed for typical applications in households or smaller buildings. The SIGURA 350, on the other hand, works with a 350-litre tank and powerful submersible pumps, which means that significantly larger supply areas can be reliably served.
With these features, both models cover a wide range of applications - from garden and domestic supply to commercial or industrial systems. Depending on the amount of water required, the space available and the type of application, a suitable solution can be selected to ensure consistently high operational reliability.
| SIGURA 9 | SIGURA 350 | |
|---|---|---|
| Tank capacity | 9 litres | 350 litres |
| Pump type | 4-stage centrifugal pump |
Multigo 205 Multigo 407 |
| Max. Delivery capacity | 35 l/min at 3 bar |
80 l/min (205) 120 l/min (407) |
| Max. Max. pressure | 4.4-4.5 bar | up to 4.8 bar |
| Emergency overflow | DN 70 | DN 100 |
| Dimensions | W 500 × H 510 × D 315 mm | Ø 700 mm × H 1,350 mm |
| Standby consumption | < 0.2 watts | < 0.2 watts |
| Pump control | Zeta 02 | Zeta 02 |
Difference between
industrial water and drinking water
The distinction between service water and drinking water is crucial for the planning and safe operation of water supply systems. Drinking water is a strictly monitored foodstuff that is intended for human consumption, personal hygiene and the preparation of food. It is subject to clearly defined limits and requirements for hygiene and quality.
Service water, on the other hand, is used for technical, commercial or agricultural purposes - for example, for watering gardens, cleaning, in processes or as extinguishing water. In these applications, the water can come into contact with dirt, chemicals, microorganisms or other substances. For this reason , process water must not come into contact with the drinking water installation again , but must be permanently separated from the public drinking water supply using a suitable separation system.
Versatile application possibilities
in household, trade and industry
Drinking water separation stations are used wherever drinking water is provided for an application, but the extracted water must not come into contact with the public network again. In private areas, this mainly applies to irrigation systems where a system separator is required for garden irrigation.
In commercial and industrial environments, separator stations reliably protect the drinking water network from backflows of potentially contaminated process water, which can occur due to variable pressure situations or large withdrawal volumes.
Modern system separators for drinking water and garden irrigation ensure safe and standard-compliant operation in a wide range of industries.
Typical areas of application
for drinking water separation stations:
- market gardens
- animal husbandry
- Cleaning and washing systems
- Irrigation systems
- Extinguishing water
- Process water
- Cooling water supply
- Agriculture
Installation of the separating station
Correct installation for reliable operation
Proper installation is crucial for the safe operation of a drinking water separation station. Both systems - SIGURA 9 and SIGURA 350 - must be installed in a dry, frost-free technical room above the backflow level. In addition, a suitable connection for the emergency overflow is required (SIGURA 9: DN 70, SIGURA 350: DN 100) in order to be able to drain water safely in the event of a fault.
To ensure that the systems work reliably, certain general conditions must be observed: All cables must be connected in a stress-free and flat-sealing manner, and installation may only be carried out by authorised specialist personnel. With the SIGURA 9, the wall-mounted unit is attached to a bracket, while the SIGURA 350 requires a footprint of around one square metre. Both models require an adequate supply of drinking water corresponding to the respective pump capacity.
Before commissioning, the pipes are flushed, the pump is vented and the function of the float valves is checked. These steps ensure that the separation system starts reliably and that protective functions work correctly. In this way, the separation station can be safely integrated and operated hygienically in the long term.
Reliable solutions
for small and large water systems
In small and medium-sized water systems, the SIGURA 9 ensures reliable protection against backflow risks in the public supply network, for example as separation stations for garden irrigation.
For larger commercial or industrial supply systems, powerful models such as the SIGURA 350 provide the required flow rates and pressure levels. This makes them suitable for demanding applications where robust pump technology, constant supply and a sufficient intermediate volume are required - for example in agriculture, cooling and process water systems or technical systems with high peak demand.
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When is a drinking water separation station mandatory?
A separation station is always required when drinking water is fed into a system which may not be connected directly to the drinking water installation. This includes certain Irrigation systems, washing systems, process water and cooling water systems and all systems in which category 5 liquids (DIN EN 1717) are used.
What does "free outlet" according to DIN EN 1717 mean?
The free outlet is a safety device that prevents non-drinking water from from flowing back into the public drinking water network. It physically separates the two systems and thus ensures that back siphoning or back pressure is excluded. Separation stations implement precisely this principle.
What are the differences between SIGURA 9 and SIGURA 350?
The SIGURA 9 is designed for applications such as smaller irrigation areas or private areas, while the SIGURA 350 with its large storage tank and powerful pumps was and powerful pumps was developed for commercial and industrial systems. It offers higher flow rates, more intermediate volume and robust pump technology.
Can a separation station also be used for drip irrigation?
In principle, yes, but minimum flow rates must be observed. The SIGURA 9 requires at least 5 l/min, the SIGURA 350 at least 5-10 l/min, depending on the pump type. at least 5-10 litres/min. If the withdrawal quantities are too low, a suitable diaphragm expansion vessel diaphragm expansion vessel (MAG) must be installed to reduce the switch-on frequency.
How often do separation stations need to be serviced?
A visual and functional check should be carried out every six months. This includes checking for leaks, the line pressure the float valves and the switch-on and switch-off points of the switching points. Some mechanical components also have recommended replacement intervals of around ten years.
Can a separation station be installed below the backflow level?
No, an installation below the backflow level is only possible with additional protection measures and must be checked individually. As standard separation stations must be installed above the backflow level so that emergency emergency overflows function properly.