VAG Spring-Loaded Air Valve

PN: 10/16/25 - DN: 300...800

Productgroup: Air Valves

Medium: Water

Spring-loaded air valve with very high venting capacity for rapid discharge of the medium present in the pipeline, for air release when filling the pipeline and during operation. Large cross-section for venting large amounts of air during fast switch-off procedures, rapid discharge or pipe bursts. Used in bottom outlets, barrages or dams, long-distance pipelines or downstream of large butterfly valves. The integrated friction damper reduces the speed of the closing movement and thus pressure surges.

  • Sealing system/standard: Resilient seated
  • Spring-loaded air valve
  • Venting function:
    • Large cross-section to vent high quantities of air for pipe collapsing protection
    • Small orifice to release low quantities of air during operation under pressure
    • Medium orifice to release when filling the pipeline
  • Very high venting capacity for large quantities of air with attached triple function air valve (VAG DUOJET® Automatic Air Valve)
  • With flange end acc. to EN 1092-2
  • Minimum operation pressure: 0.3 bar
  • With friction damper for soft closing of the disk
  • With VAG DUOJET® Automatic Air Valve including shut-off valve (VAG CEREX® 300 Butterfly Valve for inspection)
  • Triple function air valve
  • Body: Welded steel S235JRG2
  • Bonnet: Welded steel S235JRG2
  • Inner parts: Stainless steel 1.4301
  • Stem: Stainless steel 1.4301
  • Bonnet bolts: Stainless steel A4 (DIN EN ISO 3506)
  • Body VAG DUOJET® Automatic Air Valve: Ductile iron EN-GJS-400-15 (GGG-40)
  • Body of shut-off valve: Ductile iron EN-GJS 400-15 (GGG-40)

Internally and externally epoxy coated

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Gene Darin
Phone: +1-603-490-1784


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