Page 552 - RACCORDERIEMETALLICHE - LISTINO 2024 - FIDRA

550 APPARECCHIATURE PER IMPIANTI IDROTERMICI
Equipment for hydro-thermal plants • Zuberhör für heizungen • Appareillages pour installations hydrothermiques • Aparatos para instalaciones hidrotermicas

FOCUS ON

HYDRAULIC FEATURES To allow the air evacuation, unscrew the protective cap of at least two
The automatic air vent Besser has a single automatic turns. We recommend that you don’t remove the protective cap to
oat that carries out two main functions: avoid penetration of impurities into the unit.
Check that all pipes connections are watertight.
• the evacuation of a consistent air ow through a pipe-
line (e.g. during loading/pressurization of the plant)
• degassing, which discharges air trapped or formed TECHNICAL FEATURES
during operation in the pipeline. Pressure r
As in European Standard EN 14868, the presence of ox-
ygen in heating systems can provoke anodic corrosion,
noise, air pockets, obstructions, cavitation in the circu- range of operation air evacuation
lation pumps, etc. that may signiƒcantly compromise
the performance and integrity of the systems. Temperature maximum working temperature (TS)
The automatic airvent Besser are installed in the verti-
cal position: Compatible uids heat transfer uids in compliance
• on the air separator;
• in the top of the installation of heating close systems;
• in all the points which it is possible the Threading
accumulation of air.
Requirements and tests

GRAPHIC FOR BESSER AIRVENT FUNCTIONING
Body
Plug
Seat
Internal mechanisms acetal resin (POM)
Air ow (Nl/min) Float NBR rubber

highly resistant polypropilene PP
Spring
Pressure (bar)

HYDRAULIC FEATURES TECHNICAL FEATURES / DESIGN
Pressure
The shut-o“ valve is useful for tasks of substitution Temperature maximum working temperature (TS)
or inspection of air vents, blocking the ow to the
disconnected valve. When used in conjunction with an Compatible uids Heat transfer uids in compliance
air vent in distribution systems for drinkable water, this
product meets the standards stipulated in EN 1074-2.
Threading
Requirements and tests
Body
Separating valve acetal resin (POM)
Spring

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