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An Air Release Valve Manufacturer in Canada supplies automatic air release valves for water transmission and distribution pipelines where air can accumulate during normal operation. Installed at high points in the pipeline, these valves automatically discharge accumulated air while the pipeline remains under pressure.
The valve uses a float-operated mechanism. When air collects inside the valve, the float moves down and opens the air outlet. As the accumulated air is released and water enters the valve chamber, the float rises and closes the outlet. This allows air to be continuously removed during normal pipeline operation without interrupting water flow.
Features
- Automatic release of accumulated air under pressure
- Float-operated automatic mechanism
- Continuous removal of accumulated air during pipeline operation
- Designed for installation at pipeline high points
- Automatic operation without external power
- Metallic body and cover construction
- Suitable for water and wastewater service
- Available with different body and internal material options
- Water and wastewater transmission systems
Air Release Valves for Canadian Water Systems
Air can accumulate at high points in water transmission and distribution pipelines, particularly where the pipeline profile changes. Ontario\'s drinking-water design guidance specifically calls for air release and vacuum-relief valves at high points where air can accumulate and references AWWA C512 for these valves.
For Canadian water infrastructure, air release valves are therefore an important part of pipeline air management. Automatic air release valves continuously discharge accumulated air while the pipeline is operating under pressure, helping maintain the intended flow passage through the pipeline.
Technical Specifications
| Parameter | Specification |
| Valve Type | Single Orifice / Double Orifice / Kinetic / Combination Air Release Valve |
| Operating Principle | Float-operated |
| Function | Automatic release of accumulated air under pressure |
| Service | Water and wastewater |
| Body & Cover | Metallic construction |
| Body Materials | Gray Cast Iron, Ductile Iron, Carbon Steel or Stainless Steel |
| Nominal Size | 1/2 in. to 6 in. (DN15 to DN150) |
| Maximum Design Pressure | Up to 300 psi (2,070 kPa) |
| Liquid Temperature | Above freezing to 125°F (52°C) |
| Operation | Automatic |
| Installation | At pipeline high points |
| Flow Direction | Air discharge from the pressurized pipeline |
The size, pressure, temperature and material ranges above come from the scope of AWWA C512 for air-release valves. The standard covers ½-in. through 6-in. air-release valves with metallic bodies and covers, maximum design pressure of 300 psi, and liquid temperatures from above freezing to 125°F (52°C).
Standards and Testing
AWWA C512 is the principal North American standard for air-release, air/vacuum and combination air valves used in water and wastewater service. It establishes requirements covering valve materials, design, testing, inspection, marking and other product requirements.
For water-supply applications using the European standard framework, EN 1074-4 specifies fitness-for-purpose requirements and verification tests for air valves.
Industries Served
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