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.

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.