Wastewater Air Valve
A double Wastewater Air Valve is used to prevent excess pressure of gases and liquids, stop vacuums in the pipe system that can damage pipework in pumping system by allowing air into the system, then bleeds of gases as the system is pressured when the pumping restarts, maintaining stability.
Please see below our Working with Air Valves document and our Wastewater Air Valves datasheets under the Option Comparison tab.
Product Information
Wastewater Air Valve
Double orifice air valve having three functions:
- Efficient release of gas to prevent pressure build-up
- Ingress of gas to prevent vacuum, as media leaves valve
- Controlled bleed of gas to maintain system stability
Our sewage air release valve is suitable for wastewater and sewage applications
Technical Specification
- Range: DN50-DN200
- Flanges and Drillings: BS EN 1092-2 1987 Table 9 (PN16)
- Maximum working pressure: 16 Bar
- Hydrostatic Pressure Tests:
Seal: 1.1 x PN (17.6 Bar)
Body: 1.5 x PN (24.0 Bar) - Temperature range: -10°C to 70°C, insulate at 0°C and below
- Coating: Blue fusion bonded epoxy (WRAS listed)
- Available in stainless steel (price on request)
Features
- Unique lightweight ductile iron design
- Durable fusion bonded epoxy coated
- Directly acting float mechanism
- Corrosion resistant construction
- Drain valve as standard
- Robust low maintenance design
- Large sloped float chamber
Options
- Isolating gate valves (recommended)
- Engineered surge alleviation protection mechanism
- Rapid fill protection
* Please note models DN150 and DN200 are not available to buy online. Please contact our sales team for further information.
* We can also supply accessories, such as, isolating gate valve, inflow/outflow check valve and tapped cowl for piped outlet.
Applications
Sewage Treatment Works 
