VAG Spring-Loaded Air Valve Anti-Surge

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.

  • Spring-loaded air valve
  • Venting function:
    • Large cross-section to vent high quantities of air for pipe collapsing protection with adjustable opening pressure
    • Anti-Surge orifice to release when filling the pipeline
    • Small orifice to release low quantities of air during operation under pressure
  • Very high venting capacity for large quantities of air with attached triple function air valve (VAG DUOJET® Anti-Surge Automatic Air Valve)
  • With flange end acc. to EN 1092-2
  • Minimum operation pressure: 0.3 bar
  • 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® Anti-Surge 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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Technical datasheet
VAG Spring-Loaded Air Valve Anti-Surge
Assembly and operating instruction
Spring-Loaded Air Valve
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Product information
Air Valves
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Tender text
Spring-Loaded Air Valve
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Spring-Loaded Air Valve

Carl-Reuther-Str. 1
68305 Mannheim
Phone: +49 (621) 749 0
Fax: +49 (621) 749 2156

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