Anti-Siphon Vaccum Breaker

The anti-siphon vacuum breaker is an inlet air-logged pressurized valve which opens when there is a pressure drop. The internal obturator disc is normally closed when the water in the valve is at a pressure equal or greater than the atmospheric pressure. The valve opens to permit air to enter, in case the water inlet pressure is lower than the atmospheric pressure and closes completely when the water flow returns to normal pressure. This device is used to avoid siphoning during draining phases in hydraulic plants. In systems that are not permanently connected to the water main, such as water distribution plants, this device keeps contaminated water from returning to the drinking water supply system. The CR brass body renders this device inert to the dezincification phenomenon. This device can be used in conditioning plants, sanitary installations for water supply outside buildings, according to EN 805, sanitary installations for water distribution inside buildings following EN 806-1, and irrigation systems. This product adheres to the standards set forth by the European health authorities for the transport of alimentary fluids and potable water.