D-090 | Underground Air Valve


  • Product Catalog:
  • Product Drawings:
  • Install & Maintenance:
PN 10/16 - DN 50/80/100


Save manhole costs with the new A.R.I. UNDERGROUND AIR VALVE, designed to provide reliable solutions for special needs such as:

  • Better frost protection.
  • Savings in installation costs.
  • Installations under important crossings: roads, pavements, buildings.

Product Features

  • Underground air valve system replaces need for manholes and reduces installation costs.
  • Integral shut-off valve: shuts off automatically when removing the air valve for maintenance purposes.
  • Air valve is a single chamber double orifice, directly operated by the flow medium.
  • Dynamic design allows for high velocity air discharge while preventing premature closure.
  • Innovative rolling seal mechanism.
  • Available in 2" male threaded connections, NPT/BSP and flanged 2", 3", 4".

Materials and Corrosion Protection

  • Air valve box made of P.V.C. – according to high-quality standards.
  • Installation lengths: 500 mm, 755 mm, 1055 mm, 1355 mm, 1555mm, 1830mm, 2135mm, and 2440mm.
  • Air valve body is made of high-strength composite materials.
  • All operating parts are made of corrosion- resistant materials.

Application Range

  • Working pressure range:
    • D-040LP: 0.1 – 10 BAR.
    • D-040: 0.2 – 16 BAR.
  • Maximum operating temperature: 60°C.
  • Maximum intermittent temperature: 90° C.
  • For long constant-sloped pipeline segments, at peaks along the pipeline and at peaks relative to hydraulic gradient.


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Last Updated on: Thursday, 24 August 2023