System separator used as a safety fitting in a drinking water pipe comprises an inlet-side reflux preventor with a reflux-preventing section of a membrane, and a drain valve with a drain section of the same membrane

摘要

System separator comprises a flow housing provided with an input-side reflux preventor, an outlet-side reflux preventor (60) and a central chamber (9) that is emptied via a drain valve according to the pressure difference between the inlet side (6) and the central chamber. The inlet-side reflux preventor has a reflux-preventing section (52) of a membrane, which releases a flow path to the outlet-side reflux preventor according to the inlet-side pressure. The drain valve has a drain section (50) of the same membrane, which releases a flow path from the central chamber to a drain channel (10) according to the pressure difference between the inlet side and the central chamber.