Air Valves Waste/Sewage Water 900 Series - Double Air Valve Waste Water 3” and 4” 80 - 100mm PN16

- Ductile iron construction
- All Stainless steel internal parts
- Venting of air/gas during charging of the main
- Inlet of air during vacuum conditions
- Release of entrained air under operating pressure
- Inlet option 80mm and 100mm PN16
- Outlet option 3” or 4” BSP
Section 5.6