Automatic Air Valve VAG DUOJET®-T (Tamper resistant)

Product features and benefits

• Resilient seated
• With flange end acc. to EN 1092-2
• Single chamber air valve in compact design
• Tamper resistant due to special strainer and bonnet design
• High discharge capacity up to sonic velocity due to stabilised floater
• Triple function air valve
• Venting function:
  • Large orifice to admission of 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

Material

• Body: Ductile Cast Iron EN-GJS 400-15 (GGG-40)
• Lower bonnet: Ductile Cast Iron EN-GJS 400-15 (GGG-40)
• Upper bonnet: Ductile Cast Iron EN-GJS 400-15 (GGG-40)
• Bonnet bolts: Stainless steel A4 (DIN EN ISO 3506)
• Strainer with lead bolt: Stainless steel 1.4301
• Float: Stainless steel 1.4571 (exception: DN 50 - PN 10/16 synthetic, from PN 25 of 1.4571)
• Other inner parts are made of stainless steel grade 1.4541
• Sealing: EPDM

Corrosion protection

• Internally and externally epoxy coated

Version

• Standard version as described
• For pressures of 0.1...1 bar with special sealing.
  Note: Please specify operating pressure when inquiring/ordering
• For flange dimensions acc. to ANSI class150