Combination Air Release Valve

Combination Air Release Valve (Single Chamber) is engineered to provide complete air management in liquid piping systems by integrating the functions of both small orifice automatic air release and large orifice air/vacuum relief into a compact, single-body unit. Designed to safeguard pipelines against air binding, vacuum collapse, and severe pressure surges, it ensures smooth flow and optimal system efficiency throughout all operational phases.

During pipeline filling, the valve exhausts large volumes of air to prevent locks; during line draining or pump shutdown, it draws in atmospheric air to prevent pipe collapse under negative pressure. Under normal operating conditions, it continuously bleeds small, entrained air pockets that accumulate at high points while the system is fully pressurized. Ideal for water transmission, municipal networks, power plant cooling systems, and industrial processing, this single-chamber solution delivers heavy-duty protection in a lightweight, space-saving profile.

Key Features

• Integrated 3-in-1 Functionality: Performs bulk air discharge during filling, rapid vacuum relief during draining, and continuous automatic micro-air venting under pressure.

• Single-Chamber Design: Combines dual-stage float mechanisms into one compact body, saving space and reducing weight compared to twin-chamber units.

• Anti-Slam & Surge Protection: Precision-engineered floats prevent premature valve closure during high-velocity air exhaust and cushion liquid column arrival.

• Zero-Leakage Resilient Sealing: High-integrity soft seats provide dynamic, drop-tight sealing under both low and high operating pressures.

• Corrosion-Resistant Interiors: Fitted with stainless steel internal components and protective epoxy coatings to withstand aggressive fluid environments.

Brands We Provide

• GCC VALVES

• SVR GLOBAL

• ARMSTRONG

• GESTRA

• EMERSON

Applications

• Municipal Water Distribution & Transmission Mains

• Agricultural Irrigation Systems & Pumping Stations

• Industrial Process Liquid & Cooling Water Loops

• Water Treatment Plants & Filtration Systems

• Desalination & High-Pressure Water Networks

• HVAC Chilled Water Circuits

Benefits

• Space & Installation Savings: Offers complete air valve protection in a single valve body, reducing installation costs and vault dimensions.

• Prevents Vacuum Damage: Protects thin-walled and large-diameter pipelines from structural collapse caused by sudden pressure drops.

• Maximizes Flow Efficiency: Keeps cross-sectional pipe area free from air pockets, maintaining full flow rate and lowering pump energy consumption.

• Minimal Maintenance: Simple mechanical float arrangement ensures extended operational life with simple top-entry field serviceability.

Our Combination Air Release Valves at AustraliaValves.com are manufactured to international utility standards, offering custom body materials, protective coatings, and connection configurations to match your project specs across Australia.

For technical datasheets, sizing calculations, or to request a quote, please contact us.