Air valves for water and sewage

Air valves are hydraulic devices that guarantee the regularity of the flow by releasing the air from the pipes under pressure. Vent valves are usually installed at the highest points of the longitudinal profile where the air tends to flow. This is done to avoid the presence of air inside the pipe. The problems that may arise are:

– reduction of the flow section and therefore reduction of the water flow rate;
– deactivation of the pumps in the pressure lines;
– corrosion inside the metal pipes.

Air valves for water and sewage

Usually in the water used in the distribution there is a percentage of air of about 2%. In case of pressure decrease and temperature increase, the percentage of air decreases and consequently there will be a constant production of free air that expands in the pressure pipes. The vent valves have the function of controlling and managing the air. The vent valves can perform the following functions:

degassing: the function of removing air;
volumetric emptying: a large volume of air enters and compensates for the volume of liquid that exits. This avoids dangerous depressions;
volumetric filling: present air exits to prevent the formation of air pockets;

The best choice for a good operation are the cast iron vent valves, because they are reliable, simple and durable and therefore do not require much maintenance.

Air release valve for water – Art 7010

  • In ductile iron;
  • Dimensions according to PN-EN 1092-2:1999;
  • Maximum temperature 70°C;
  • Applications: water, drinkable water, other inert fluids
  • Installation: vertical;
Download the data sheet
Air release valve for water - Art 7010

Air release valve single and double orifice – Triple function – Art 7040 e 7050

Air release valve for water double orifice - Triple function - Art 7040 e 7050
  • In ductile iron;
  • Dimensions according to PN-EN 1092-2:1999;
  • Maximum temperature 70°C;
  • Applications: water, drinkable water, other inert fluids
  • Installation: horizontal or vertical

Download the data sheet

Air release valve single orifice – Art 7080

  • In ductile iron;
  • Dimensions according to PN-EN 1092-2:1999;
  • Maximum temperature 70°C;
  • Application: water distribution systems, ventilation piping
  • Installation: vertical;
Download the data sheet
Air release valve single orifice -  Art 7080

Air release valve for sewage – Art 7025

Air release valve for water double orifice - Triple function - Art 7040 e 7050
  • In stainless steel;

  • Dimensions according to PN-EN 1092-2:1999;
  • Maximum temperature 70°C;
  • Applications: water, drinkable water, other inert fluids
  • Installation: horizontal or vertical

Download the data sheet

Air release valve kit for sewage – Art 7090

  • In stainless steel;
  • Dimensions according to PN-EN 1092-2:1999;

  • Maximum temperature 70°C;
  • Applications: water, drinkable water, other inert fluids
  • Installation: vertical;
Download the data sheet
Air release valve kit for sewage - Art 7090

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