Water and Sewer Vent Valves

Vent Valves

Relief valves (or vents) are hydraulic devices that ensure the regularity of the flow by venting air from pressurised pipelines. Vent valves are usually installed at the highest points of the longitudinal profile where air tends to flow. This is done to prevent the presence of air inside the pipe. The problems that can arise are:

-decrease in the outflow section and thus reduction of the water flow rate;
decommissioning of the pumps in the preemptive pipelines;
corrosion inside metal pipes.

Air valves for water and sewage

There is usually about 2% air in the water used in distribution. As pressure decreases and temperature rises, the percentage of air decreases and consequently there will be a constant production of free air expanding in the pressure ducts. Vent valves have the function of air control and management. 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 leaving. This avoids dangerous depressions;
volumetric filling: air present exits to prevent air pockets forming;

The best choice for good operation are cast iron air release valves, as they are reliable, simple and durable and therefore do not require much maintenance.

Water release valve – Art 7010

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

Double float water release valve – Triple function – Art. 7040 and 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 and other inert fluids.
  • Installation: horizontal or vertical

Download the data sheet

Two-stage vent valve – 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

Sewer vent valve – 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 and other inert fluids.
  • Installation: horizontal or vertical

Download the data sheet

Sewer vent valve kit – Art. 7090

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

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

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