3-Function Air Relief Valve
Product
Product
3-Function Air Relief Valve

3-Function Air Relief Valve
3-Function Air Relief Valve

3-Function Air Relief Valve

Highly efficient air release solution designed to discharge accumulated air during pipeline filling, operation, and draining. It combines the functions of a large orifice air valve (for rapid air intake/discharge during filling and draining) and a small orifice valve (for continuous air release under pressure). This dual-action design ensures stable flow, prevents pipeline vibration, and protects against water hammer or vacuum damage.

    Benefits

    • Dual-function design: Efficiently handles both high-volume and pressurized air release


    • Protects pipeline integrity: Prevents air blockages, water hammer, and vacuum collapse


    • Automatic operation: No manual intervention required


    • Corrosion-resistant materials: Ensures long-term service in water and wastewater environments


    • Compact and easy to maintain: Simplifies installation and servicing


    Technical Data

    ParameterValue / Options
    FunctionAutomatic large/small orifice air release & intake
    Connection TypeFlanged (PN10/PN16/ANSI), Threaded (optional)
    MaterialBody: Ductile Iron / Stainless Steel; Float: SS304 / SS316
    Max. Nominal PressurePN10 ~ PN25 / Class 150
    Max. Nominal SizeDN25 ~ DN300 (1” ~ 12”)
    Allowable Fluid Temperature0°C ~ +80°C (optional high-temp versions up to 120°C)


    Sectional Drawings

    Exhaust valve.jpg

    Applications


    • Potable water supply pipelines


    • Sewage and wastewater systems


    • Irrigation networks


    • Long-distance and high-altitude water transmission lines


    • Industrial process water pipelines