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Air Valve

Air Valve

African Valve is a trusted Air Valve Supplier in Nigeria, offering premium-grade valves designed to automatically release or admit air in pressurized pipeline systems. These valves are critical for preventing air accumulation, vacuum conditions, and pressure surges that can disrupt system performance or cause structural damage.

Function & Working

Air valves are typically installed at high points in a pipeline where air pockets naturally accumulate. They serve three functions:

  • Air Release: Discharge small amounts of air during pressurized flow

  • Air/Vacuum: Allow large volumes of air to escape during filling

  • Combination: Admit air during pipe draining to prevent vacuum collapse

This ensures consistent flow, prevents cavitation, and maintains pipeline integrity.

Advantages

  • Eliminates trapped air and improves flow efficiency

  • Prevents pipeline damage from vacuum or surge

  • Reduces energy consumption by maintaining optimal pressure

  • Increases pump and pipeline lifespan

  • Compact and easy to install

Types Offered

  • Single Orifice Air Valve

  • Double Orifice Air Valve

  • Double Orifice Kinetic Air Valve

Industries Served

  • Municipal Water Supply

  • Wastewater Management

  • Irrigation and Agriculture

  • Desalination Plants

  • Hydropower Stations

  • HVAC and District Cooling Systems

Key Components

  • Body and Cover – Corrosion-resistant cast iron or stainless steel

  • Float Mechanism – Controls air intake and release during operation

  • Orifice Assembly – Vents air precisely under varying pressure conditions

  • Sealing System – Rubber seats or O-rings for leak-free performance

  • Anti-Slam Mechanism – Prevents water hammer during rapid valve closure

  • Protective Screen – Prevents debris ingress

Technical Specifications

  • Design Standards: AWWA C512, EN 1074-4

  • Body Materials: Ductile Iron (GJS-500), Cast Steel (WCB), Stainless Steel (CF8M, CF3M), Bronze

  • Float Materials: SS304, SS316, Polypropylene

  • Pressure Ratings: PN10 to PN25 / Class 150

  • Size Range: DN25 to DN300

  • End Connections:

    • Flanged (ANSI/DIN)

    • Threaded (NPT – for small pipelines)

  • Special Features:

    • Kinetic and combination air release design

    • UV and corrosion-resistant coatings

    • Maintenance-friendly design

    • Field-proven reliability from a certified Air Valve Supplier in Nigeria

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