Page 552 - RACCORDERIEMETALLICHE - LISTINO 2024
P. 552

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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