- DN50 to DN250
Usage
The STC series backflow preventers are used in accordance with DIN EN 1717 to protect the drinking water network when connecting devices and systems that pose a risk to drinking water, in accordance with classes 1-4 of DIN 1988, Part 4.
Functionality
The system separators operate hydraulically, controlled by their own medium. Two built-in non-return valves divide the system separator into chambers: inlet, middle, and outlet chambers. Each of the three chambers is equipped with test connections.
The two independent backflow preventers, which separate the middle zone (reduced pressure zone) from the other zones, are closed without pressure.
The relief valve in the middle chamber, which is used to drain contaminants, is closed without pressure.
Advantages
Compact design
High flow capacity
DVGW tested
International certification marks
Downloads
Catalog sheet
Download