DN80 Airvac Vacuum Interface Valve AV3

DN80 Airvac Vacuum Interface Valve with AC controller
DN80 Airvac Vacuum Interface Valve AV3
RC HP IMG_7222
RC HP IMG_7221
DN80 Airvac Vacuum Interface Valve AV3
DN80 Installed Airvac Vacuum Valve
DN80 Airvac Vacuum Interface Valve
External Valve Chamber Post Tune 31-01


DN80 Airvac Vacuum Interface Valve AV3


DN80 Airvac Vacuum Interface Valve AV3. The valve complies fully with AS4310:2004 and the WSAA code. The valve is supplied complete with HP controller & No-hub couplings.

Airvac offers a full-port 3” vacuum interface valve which is pneumatically controlled and designed for handling 80mm (3”)  solids. The valve is made of glass filled polypropylene. All parts are made of corrosion resistant materials. A high flow coefficient (Cv) keeps friction losses to an absolute minimum.


Unique Selling Point


  • The Airvac vacuum valve has a full-port 3-inch opening
  • All components of the vacuum valve are corrosion resistant
  • Updates to Airvac vacuum valves are designed so that the latest models are interchangeable with previous models
  • The Airvac valve is pneumatically operated and no electricity is required at the valve pit or the house
  • The Airvac vacuum valve requires minimal maintenance, is inexpensive to rebuild and has a long life. The geometry of the Airvac valve results in a high Cv factor which keeps friction losses through the valve to a minimum.

Better Sealing and Cold Weather resistant valve seat assembly


• Rounded seat shape provides better sealing
• Set screw retainer that allows easy replacement of valve seat without full disassembly
• Buna Rubber that resists shrinkage due to chemical attack



Stronger wye body at adaptor ring mounting


• Wye body has thicker material over push pins that lock in the threaded adaptor ring
• Black push pins hold adaptor ring into body


Improved Cv for higher liquid flow rate with less friction loss.


• Larger valve seat opening.

New Buna Rubber Plunger Rebuild Kit Info Coming Soon.



The Airvac 3” vacuum valve is vacuum operated on opening and spring assisted on closing. System vacuum ensures positive valve seating. The valve has a  80mm  3-inch full-port opening, is made of glass filled polypropylene, and has a stainless steel shaft, delrin bearing and elastomer seals.

The 3” vacuum valve is equipped with a rolling diaphragm-type vacuum operator and is capable of overcoming all sealing forces; and of opening using vacuum from the downstream side of the valve. All materials of the valve are chemically resistant to normal domestic sewage constituents and gases.

The driving force in a vacuum system is the pressure differential that exists between atmosphere and vacuum in the system which occurs when the valve opens. As a result, the only place to impart energy in a vacuum system is at the valve itself. Any loss through the valve further depletes this energy resulting in less energy available for transport within the pipeline. This is especially critical considering that this loss occurs at every valve and during each valve cycle. The flow coefficient (Cv factor) is that flow rate in gpm which would yield a head loss of 1 psi. The Airvac valve is produced with an internal geometry that results in a high Cv factor which keeps friction loss to an absolute minimum. The Airvac valve has the highest Cv factor of any vacuum valve on the market.