Combination Air Valve

Combination Air Valve

Technical data:

  • 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
  • Outlet female threaded acc. to DIN ISO 228
  • Minimum operation pressure: 0.3 bar

Function: Municipal and industrial water conveyance systems, Water pipelines vulnerable to vandalism and/or water theft, Water systems found in remote areas


  • Body: Ductile iron EN-GJS-400-15 (GGG-40)
  • Bonnet: Stainless steel 1.4308
  • Bonnet bolts: Stainless steel A2 (DIN EN ISO 3506)
  • Inner parts: Stainless steel 1.4541
  • Float: Plastic polypropylene
  • Sealing: EPDM