The AVK Series 701 DN80 underground air valve for waste water services is a fully chambered device for quick and easy installation, keeping the air valve safe and secure. The valve can be pre-assembled, which helps reduce the installation time by 30%. A small orifice has helped enhanced performance of the valve by discharging 10 times greater than conventional units. There is an integral isolator – quick shut off to the valve, which helps release connection for the ease of maintenance. The valves are available in 4 options – 10 bar/16 bar/low pressure sealing 16 bar/ and high discharge 16 bar. There are 2 height options available as per variation. The valve requires no chamber entry, this helps remove issues relating to confined spaces.