|
|
|
| |
|
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: |
| |
|
|
| |
|
 |
|
|
