What is the flow characteristic of air actuated valves?

Hey there! As a supplier of air actuated valves, I've been getting a lot of questions lately about the flow characteristics of these valves. So, I thought I'd sit down and write a blog post to explain everything you need to know.

First off, let's talk about what air actuated valves are. These are valves that are controlled by compressed air. They're commonly used in a variety of industries, including chemical processing, food and beverage, and water treatment. The main advantage of air actuated valves is that they can be operated remotely, which makes them ideal for applications where manual operation is difficult or dangerous.

Now, let's get into the flow characteristics of air actuated valves. The flow characteristic of a valve refers to how the flow rate through the valve changes as the valve opens or closes. There are several different types of flow characteristics, but the most common ones are linear, equal percentage, and quick opening.

Linear Flow Characteristic

A valve with a linear flow characteristic has a flow rate that is directly proportional to the valve's opening. In other words, if you open the valve by 50%, the flow rate through the valve will also increase by 50%. This type of flow characteristic is ideal for applications where you need to control the flow rate precisely. For example, in a chemical processing plant, you might need to add a specific amount of a chemical to a reaction vessel at a constant rate. A valve with a linear flow characteristic would be perfect for this application.

Equal Percentage Flow Characteristic

A valve with an equal percentage flow characteristic has a flow rate that increases exponentially as the valve opens. This means that the flow rate increases more rapidly as the valve approaches its fully open position. This type of flow characteristic is ideal for applications where you need to control the flow rate over a wide range. For example, in a water treatment plant, you might need to control the flow rate of water from a few gallons per minute to several hundred gallons per minute. A valve with an equal percentage flow characteristic would be able to handle this wide range of flow rates effectively.

Quick Opening Flow Characteristic

A valve with a quick opening flow characteristic has a flow rate that increases rapidly as the valve opens. This type of flow characteristic is ideal for applications where you need to open the valve quickly to allow a large amount of fluid to flow through it. For example, in a fire protection system, you might need to open a valve quickly to allow water to flow through a sprinkler system. A valve with a quick opening flow characteristic would be able to do this quickly and efficiently.

So, which type of flow characteristic is right for your application? Well, it depends on a few factors, such as the type of fluid you're handling, the flow rate you need to control, and the pressure drop across the valve. If you're not sure which type of flow characteristic is right for your application, I recommend consulting with a valve expert.

At our company, we offer a wide range of air actuated valves with different flow characteristics to meet the needs of our customers. For example, we have Pneumatic PVDF 3 Way Ball Valve that can be used in applications where you need to control the flow of corrosive fluids. These valves are made from PVDF, which is a highly corrosion-resistant material. We also have 1 Inch Air Actuated Three Way Ball Valve that are ideal for applications where you need to control the flow of small amounts of fluid. And our Pneumatic Actuated Ball Valve are available in a variety of sizes and flow characteristics to meet the needs of different applications.

In addition to the flow characteristic, there are a few other factors that you need to consider when choosing an air actuated valve. These include the valve's size, the type of actuator, and the material of construction. The size of the valve is important because it determines the flow capacity of the valve. The type of actuator is important because it determines how the valve is controlled. And the material of construction is important because it determines the valve's resistance to corrosion and wear.

If you're in the market for an air actuated valve, I encourage you to contact us to learn more about our products. We have a team of experts who can help you choose the right valve for your application. We also offer competitive pricing and excellent customer service. So, don't hesitate to reach out to us if you have any questions or if you're ready to place an order.

In conclusion, the flow characteristic of an air actuated valve is an important factor to consider when choosing a valve for your application. By understanding the different types of flow characteristics and how they work, you can choose the right valve to meet your needs. And if you need any help or advice, don't hesitate to contact us. We're here to help you find the perfect valve for your application.

References

• "Valve Handbook", 4th Edition, by J. Paul Tullis
• "Control Valve Application and Sizing", by Emerson Process Management