Ductile Iron PN16 Double Acting Double Orifice Air Relief Valve, AVK


AVK double orifice, triple acting air valves are designed for automatic rapid pipe filling and pipe draining as well as for automatic discharge of accumulated air during normal working conditions. The unique ‘Aerokinetic’ design, where air rushing out of the system cannot force the float upwards and close it prematurely, makes sure that the valve closes only after all air has left the system and water has entered the chamber. All ductile iron components are coated with GSK approved fusion bonded epoxy to ensure high durability. All other components are made by either a WRAS approved polymer material or stainless steel to minimize corrosion risk. All seals are made of WRAS approved EPDM rubber featuring an excellent compression set and ability to regain its original shape.

Catalogue: AVK Double Acting Air Valve 851 41-001

SKU DI-851/41-AV-AVK Categories , , ,

Product Description:

Air relief valve for drinking water (not wastewater) and neutral liquids to max 70°C


  • Designed according to EN 1074-4
  • Standard flange drilling to EN1092-2 (ISO 7005-2), PN 10/16


  • Hydraulic test according to EN 1074-1 and 2/EN 12266
  • Approved according to WRAS


  • A clever float design prevents air rushing out of the system from prematurely closing the valve
  • Large air flow capacity
  • All Iron parts with contact to the water are coated with drinking water approved, fusion bonded epoxy
  • The resilient seals are made of EPDM rubber and the seat is ABS, all drinking water approved
  • All other internal parts are highly corrosion resistant AISI 316 stainless steel or ABS
  • No moving parts are touching the internal coating
  • The complete product is approved for drinking water


Tool for orifice cover

Weight N/A
Valve Sizes:

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