Anti-Siphon Vaccum Breaker

About Anti-Siphon Vaccum Breaker

Anti-Siphon Vaccum Breaker

HYDRAULIC FEATURES

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.

TECHNICAL FEATURES

Pressure :   Maximum allowable working pressure (PN)   16 bar Preset nominal pressure (Pnr)   0.2 bar (Grade A according to EN 12266-1) Temperature :   Working temperature (TS)   from 0 C (excluding ice) to 110 C Compatible fluids :   Heat transfer fluids in compliance with Italian national standards (UNI 8065 6) Glycolate solutions (glycol)   50% Threading :   Pipeline connection Threads according to ISO 228/1 Requirements and tests as per :   Air vents, air return function   EN 1074-4 Body pressure tightness   EN 1982 B7 Seat tightness   EN 1074-4 5.2.2 Pressure resistance   EN 1074-4 5.1.1 Protection against pollution   EN 1717 Protection unit   family L type A Categories of fluids   EN1717 list 2 DESIGN Design Cast bronze body   EN 1982 - CB491K Plug and valve in brass   EN 12164 - CW614N Seat gaskets   SILICONE 40 Sh O-ring   NBR RUBBER fig-1:

 

Superior Durability and Finish

Crafted with a robust brass body and finished in polished chrome, the anti-siphon vacuum breaker delivers both outstanding durability and aesthetic appeal. The nickel/chrome plating enhances its resistance to corrosion, making it ideal for long-term use in plumbing and irrigation applications.


Simple Vertical Installation

Designed for straightforward, vertical mounting, this vacuum breaker fits standard 1/2 Inch BSPT threaded lines. The structure is optimized for easy connection, ensuring compatibility with most plumbing systems and minimising installation effort for professionals and DIY users alike.


Reliable Manual Operation

Featuring a mechanical valve operated manually, this vacuum breaker offers dependable performance without the need for electrical power. With a straight body and standard fittings, it efficiently prevents backflow and siphoning, safeguarding water quality and system integrity.