SYR System Separator STBA Type 100, DN15 R 1/2

The system disconnector BA STBA 100 is a compact safety valve according to DIN EN 1717, Group B, with controlled separation (three-chamber system). It corresponds to the installation type BA defined there and can therefore be used for protection up to and including fluid category 4. Its task is to prevent back-siphonage or backflow of non-potable water into the public drinking water network. The BA system disconnector covers a variety of applications (e.g., printing companies, chemical and food processing plants, laboratory and medical technology).
The BA system disconnector complies with DIN EN 1717 and its specified components and is designed as a 3-chamber system with controllable upstream, intermediate, and downstream pressure zones. Additionally, it is equipped with an integrated dirt trap. Each pressure zone can be fitted with test valves (accessory 6625.15.902), thus allowing control of the safety devices by pressure measurement. The system disconnector consists of 2 backflow preventers (RV) connected in series, which are equipped with a ventilatable intermediate zone. If no water is drawn, the inlet and outlet RVs, as well as the drain valve, are closed. In case of back-siphonage, the inlet pressure drops. The drain valve opens at the latest when the differential pressure between the upstream and intermediate pressure chamber has dropped to 0.14 bar.
Technical data:
Operating pressure: max. 10 bar
Operating temperature: max. 30 °C (inlet), max. 65 °C (outlet)
Ambient temperature: 5 °C - 40 °C
Installation position: any, if drain funnel is downwards
Medium: Drinking water
Flow rate: 1.8 m³/h at ?p 1.5 bar.
Connection size: DN 15