Air Vacuum Valve Manufacturer
Air vacuum valve is a valve used in piping systems to automatically release air and allow air to enter the system when negative pressure occurs. The main purpose of the valve is to prevent air from building up in the pipes, which helps to maintain steady pressure and prevent problems like water hammer. These valves are used in water, oil, and gas pipelines.
Drawing
Material
| No. | Part Name | Material |
|---|---|---|
| 1 | Body | Ductile Iron |
| 2 | Float Guide | ABS |
| 3 | Float | ABS |
| 4 | Support | ABS |
| 5 | Seat Ring | EPDM |
| 6 | Seat Support | ABS |
| 7 | Cover | Ductile Iron |
| 8 | Washer | Carbon Steel |
| 9 | Nut | Carbon Steel |
| 10 | Hexagon Bolt | Carbon Steel |
| 11 | Cowl | Ductile Iron |
Dimension
| DN | H | D | K | D1 | D2 | n-d | b | f | W | Weight/kg |
|---|---|---|---|---|---|---|---|---|---|---|
| 40 | 329 | 150 | 110 | 84 | 40 | 4-19 | 19 | 3 | 206 | 14.8 |
| 50 | 329 | 165 | 125 | 99 | 50 | 4-19 | 19 | 3 | 206 | 14.8 |
| 65 | 329 | 185 | 145 | 118 | 65 | 4-19 | 19 | 3 | 206 | 16.3 |
| 80 | 329 | 200 | 160 | 132 | 80 | 8-19 | 19 | 3 | 206 | 16.8 |
| 100 | 413 | 220 | 180 | 156 | 100 | 8-19 | 19 | 3 | 280 | 27 |
| 150 | 413 | 285 | 240 | 211 | 150 | 8-23 | 19 | 3 | 280 | 29 |
| 200 | 413 | 340 | 295 | 266 | 150 | 12-23 | 20 | 3 | 280 | 32.8 |
| 250 | 413 | 405 | 355 | 319 | 150 | 12-28 | 22 | 3 | 280 | 38.7 |
| 300 | 413 | 460 | 410 | 370 | 150 | 12-28 | 24.5 | 4 | 280 | 48.7 |
How It Works
Air Release:When you fill a pipeline with fluid, especially for the first time, air gets trapped inside. The air release valve lets this air out so it doesn’t build up and cause pressure fluctuations or inefficiencies in the system.
Once the fluid starts flowing through the pipeline, the valve lets the air out so you don’t have air pockets in the pipeline. The valve typically works with a float mechanism or a spring-loaded system.
Air Intake (Vacuum Breaker):If a pipeline experiences negative pressure (for example, if you suddenly stop the flow of fluid or if the flow rate changes), the valve automatically opens to let air into the system. This prevents the pipeline from collapsing or being damaged by the negative pressure.
In these situations, the float in the valve drops, opening the valve and letting air in, which helps keep the system stable and prevents damage to the pipeline structure.
Automatic Operation:Most air release valves are designed to work automatically based on changes in the pipeline pressure. You don’t have to do anything to make them work, which makes the system safer and more reliable.
Applications
Water Distribution Systems: Keeps air from building up in water pipes, which prevents water hammer and keeps the water flowing steadily.
Wastewater Systems: Keeps gas from getting trapped and keeps wastewater pipes from getting damaged.
Oil and Gas Pipelines: Keeps fluid moving smoothly and keeps air pockets from messing up the flow.
In short, an air release valve is a critical part of a piping system because it lets air out when it needs to and lets air in when the pressure goes negative, which keeps the pipe safe and keeps the fluid moving.
Types of Air Release Valves
There are different types of air release valves, each designed for specific applications and types of fluid. Here’s a rundown of the most common types and where they’re used:
1,Automatic Air Release Valve:Automatically opens and closes based on changes in pressure or air in the pipe. These valves are designed to let air out and let air in (vacuum protection) without you doing anything.it is used for below medium.
Water: Automatically lets air out when you fill the pipe with water and lets air in when the pressure goes negative, keeping the water flowing and keeping the pipe safe.
Sewage: Keeps air from getting trapped, which could cause blockages, and lets wastewater systems run smoothly.
Oil and gas: Keeps air from building up in the pipe and keeps the pipe safe from negative pressure, reducing the risk of damage to the pipe.
It Handles Water, sewage, oil, and gas.
2,Manual Air Release Valve:You have to open and close it yourself. These valves are typically used where you don’t need automatic operation or where you want more control over letting air out or letting air in.
It’s Used for below systems:
Small systems: Where you need control, like in maintenance areas, small industrial systems, or specific points in large systems.
Water treatment plants: Where operators need to control when air comes out at different stages of the treatment process.
It Handles Clean water, non-corrosive liquids, or low-pressure systems where you have a person who can watch it.
3,Float Air Release Valve:Uses a float to open and close based on the level of liquid or air in the valve. It works by sensing when air builds up when the liquid level is low or when the system is under pressure.
It’s Used for below systems:
Water and sewage: Often used in systems where the pressure changes a lot and you need to control when air comes out or goes in.
Long pipe systems: Especially in long-distance water distribution or wastewater pipes where air can build up over long distances.
Pump stations: To keep air from getting trapped when you’re pumping, making sure the water or fluid moves smoothly.
It Handles Water and sewage, but it can also handle thin liquids.
4,Combination Air Release Valve:Combines both air release and vacuum protection in one valve. These valves can let air out when the pipe fills with liquid and keep the pipe from getting damaged when the pressure goes negative.
It’s Used for below systems:
Water and wastewater: Great for systems where you need to let air out and keep the pipe safe from negative pressure to keep the pressure up and keep the pipe from getting damaged.
Oil and gas: Used in pipes where you need to keep air from building up and keep the pipe safe from negative pressure.
It Handles Water, sewage, and oil.
5,Pinch or Diaphragm Air Release Valve:Uses a diaphragm or pinch valve to control when air comes out. These valves are often used for fluids that need to be handled carefully or are sensitive to air.
It’s Used for below systems:
Chemicals: Good for corrosive chemicals where you need to control the air and keep air bubbles out.
Food and beverage: Used for thin fluids where you need to keep things clean.
It Handles Chemicals, food-grade liquids, and other sensitive fluids.
How to Choose the Right Valve for Different Fluids
Water: Automatic or Float valves are the most common, keeping things running smoothly and keeping air from getting trapped.
Sewage: Usually Automatic or Float valves because sewage systems have a lot of pressure changes.
Oil and Gas: Automatic or Combination valves are key to keeping air from building up and keeping the pressure steady in long pipes.
Chemicals: Pinch or Diaphragm valves are used for more delicate handling, keeping things clean.
Food & Beverage: Like chemicals, Pinch or Diaphragm valves are good for keeping things clean and controlling when air comes out.
Each type of valve has a specific job based on how the pipe system works, making sure it’s safe, efficient, and lasts a long time.
