System separation for drinking-water protection according to DIN EN 1717
The INTEWA system-separator "SEPAMAT" isolates the drinking water system from the consumer. It protects drinking water against contamination caused by backflow of pollutants from the consumer point of use. System separation is installed between the municipal drinking water supply and one or more fixtures. These must be separated in accordance with Category 5 of the current drinking water regulations contained in DIN EN1717.
SEPAMAT Applications
Type | max. Flow Rate l/h | h max. Pressure bar | Note |
SMT E10 | 600 | 3,2 | |
SMT F20 | 5,400 | 5,0 | |
SMT F40 | 7,800 | 6,5 | |
SMT F20-SC | 5,400 | 2,5 - 5,0 | adjustable pressure level |
SMT F40-SC | 7,800 | 2,5 - 6,5 | adjustable pressure level |
2 x SMT F20-SC | 10,800 | 2,5 - 5,0 | parallel redundant operation |
2 x SMT F40-SC | 15,600 | 2,5 - 6,5 | parallel redundant operation |
3 x SMT F20-SC | 16,200 | 2,5 - 5,0 | parallel redundant operation |
3 x SMT F40-SC | 23,400 | 2,5 - 6,5 | parallel redundant operation |
Certified security - SEPAMAT Eco / Favorit
Liquids of category 5 may constitute a health hazard for humans due to the presence of microbial pathogens or virulent communicable diseases. The european standard DIN EN 1717 requires the so-called "air gap" for separation between drinking-water and the consumer.
In the DVGW-certified SEPAMAT E and F system separators, this "air gap" is already integrated. According to the standard, only the "air gap AA and AB" is permitted for the replenishment of drinking-water during water shortages.
SEPAMAT Profi

The INTEWA system-separators SEPAMAT Profi include an integrated storage tank, a double-pump pressure boosting system with self-priming, multi-stage, horizontal centrifugal pump and reciprocal start-up and electronic controllers - all mounted in a powder-coated steel container. They are additionally equipped with frequency converters. This frequency control makes the use of an additional membrane pressure tank superfluous. The controller includes: a 4-line LCD display, an operating hours counter for each pump, pressure display for the double-pump system, potential-free fault transmitters, and RS 232 interface for all current building control systems.
Thanks to the built-in frequency control, the SEPAMAT P can also be used where long operation, constant pressure is needed. This is the case for e.g. irrigation systems with fixed water coverage or cooling of buildings, where water is sprayed in the air-conditioning system.
Technical data SEPAMAT Profi
Model | SMT-P12-70-SC | SMT-P12-80-SC | SMT-P12-90-SC |
Max. flow rate *) | 12,0 m³/h | 12,0 m³/h | 12,0 m³/h |
Max. pressure | 7,0 bar | 8,1 bar | 9,2 bar |
Max. pressure head | 70 m | 81 m | 92 m |
Max. current (supply voltage) | 2x 2,9 A (3x ~400 V) | 2x 3,2 A (3x ~400 V) | 2x 4,4 A (3x ~400 V) |
Rated capacity P2 | 2x 1,3 kW | 2x 1,5 kW | 2x 1,85 kW |
Free outlet | EN1717 | EN1717 | EN1717 |
Protection class | IP44 | IP44 | IP44 |
Width | 570 mm | 570 mm | 570 mm |
Height | 1335 mm | 1335 mm | 1335 mm |
Depth | 630 mm | 630 mm | 630 mm |
Net weight | 100 kg | 102 kg | 112 kg |
Pressure pipe connection | 1 ½ " AG | 1 ½ " AG | 1 ½ " AG |
Mains water connection | 1 ½ " AG | 1 ½ " AG | 1 ½ " AG |
Storage tank volume | 80 L | 80 L | 80 L |
Emergency overflow | DN100 | DN100 | DN100 |
*) with 4 bar flow pressure at the drinking water connection of the system-separator
1: Drinking-water | 3: Maximum water level |
2: Overflow opening | 4: Air gap |
The integrated pump delivers water to consumers, as required, from a separation and feed tank. The water level in the separation and feed tank is regulated by a float valve. The drinking-water network and emergency overflow are connected to the separation tank.
Contact between the consumer water and drinking-water supply is prevented. The SEPAMAT system separator thus meets the world's highest safety standards.