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VAG DUOJET® Automatic Air Valve

High-capacity, single-chamber air valve with triple function for venting and releasing air in pipelines as well as for releasing air during operation. Corrosion-proof due to stainless steel inner parts (in size DN 50, inner parts made of plastic). Safe and reliable operation even at high air-release velocities of up to sonic speed. Suitable for use in water treatment, water distribution, in dams, power plants and in industry. Send offer request

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General information

Product features and benefits

  • Resilient seated
  • With flange end acc. to EN 1092-2
  • Single chamber air valve in compact design
  • Very high discharge capacity up to sonic velocity due to stabilised floater
  • Triple function air valve
  • Venting function: 
    - Large orifice to vent high quantities of air during draining the pipeline
    - Large orifice to release high quantities of air during filling the pipeline
    - Small orifice to release low quantities of air during operation under pressure
  • Minimum operation pressure: 0.3 bar
  • With sidewise drainage plug

Material

  • Body: Ductile cast iron EN-JS 1030 (GGG-40)
  • Bonnet: Stainless steel 1.4308
  • Bonnet bolts: Stainless steel A4 (DIN EN ISO 3506)
  • Inner parts: Stainless steel 1.4571
  • Float: Stainless steel 1.4571 (exception: DN 50 synthetic)
  • Sealing: EPDM

Corrosion protection

  • Inside and outside epoxy coating acc. to GSK guidelines

Product versions

Anti Surge

Product features and benefits
  • Customized discharge capacity due to individually calculated orifice
  • With mounted VAG Butterfly Valve Lug-type with handlever
  • Prevents vacuum and reduces pressure surges after power failure at pump stations
  • Controls the filling quantity of the pipeline when unregulated pumps start up
Material
  • Body: Ductile cast iron EN-JS 1030 (GGG-40)
  • Disk of butterfly valve: Ductile cast iron EN-JS 1030 (GGG-40)
  • Orifice plate: Stainless steel 1.4021

S - Single-chamber type incl. shut-off valve

Product features and benefits
  • With mounted VAG Butterfly Valve Lug-type with handlever
  • Outlet female threaded acc. to DIN ISO 228
Material
  • Body: Ductile cast iron EN-JS 1030 (GGG-40)
  • Disk of butterfly valve: Ductile cast iron EN-JS 1030 (GGG-40)

Single-chamber type

Product features and benefits
  • Outlet female threaded acc. to DIN ISO 228
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Address

VAG-Armaturen GmbH
Carl-Reuther-Str. 1
68305 Mannheim
Germany
+49 621 7490 +49 621 749291000 Write e-mail