What are the flow characteristics of ball valves?- Ningbo Hongge Hydraulic Co., Ltd.

Ball valves are a commonly used valve type in fluid control systems, and their flow characteristics are critical to fluid control and regulation. The flow characteristics of a ball valve describe the relationship between the flow rate of a ball valve at different openings and the valve opening. Understanding the flow characteristics of a ball valve is critical to proper ball valve selection and application as it directly affects the performance and responsiveness of the fluid system.

1. Equal Percentage Flow Characteristics:

The flow rate of a ball valve with equal percentage flow characteristics increases in proportion to the valve opening, which means that within a small valve opening range, the flow rate changes slightly, but as the valve opens, the flow rate will increase rapidly. This flow characteristic is useful in applications requiring precise flow regulation and control.

For example, consider a heating system that needs to maintain a specific temperature. When the system is started, lower heating power is required, so the valve only needs to be slightly opened. Ball valves with equal percentage flow characteristics can provide precise flow control to ensure that the system temperature remains stable within a predetermined range.

In addition, equal-percent flow characteristic ball valves are suitable for systems that require periodic calibration because they provide predictable flow response.

2. Linear Flow Characteristics:

A ball valve with linear flow characteristics means that the flow rate is linearly related to the valve opening. This means that when the valve opening changes from 0% to 100%, the flow rate increases evenly. Linear flow characteristics are suitable for applications requiring simple, direct flow control.

As an example, consider a system that needs to maintain a constant pressure difference. In this case, a ball valve with linear flow characteristics can provide an intuitive flow response, allowing the system to maintain a constant pressure difference under different operating conditions. Linear flow characteristics are also suitable for applications requiring simplified control because the relationship between valve opening and flow is direct.

Ball valves with linear flow characteristics are often used in applications where smooth transitions are required, such as heating and cooling systems, to ensure precise control of flow.

3. Quick Opening Flow Characteristics:

Ball valves with fast switching flow characteristics have a large flow rate near the initial valve opening, but as the valve is further opened, the rate of increase in flow rate slows down. This type of flow characteristic is suitable for applications where rapid startup or shutdown of fluid is required.

For example, consider an emergency drain system that needs to be shut down quickly. In this case, a ball valve with fast switching flow characteristics ensures that fluid flow can be stopped quickly without delay when the valve initially closes. This is very important to ensure the security and flexibility of the system.

Ball valves with fast switching flow characteristics are also commonly used in applications that require rapid introduction or removal of fluid, such as systems that emergency shut off the flow of gas or liquid.

KHB-1/2 3/4 1NPT standard stainless steel flange ball valve ball valve pressure

Features

(1)Product code:

KHB-Valve block Ball-Shaped DN04-25/40

KHB-Sleeves Ball-Shaped DN32/50

(2)Thread Size or the pipe diameter and connection type

G1/2

(3)Valve and joints material/Ball and spindle material control

1-Carbon steel 、4-Stainless Steel

Custom according to your drawing or samples

(4）The seal material

1-POM、4-Polytetrafluoroethylene 5-PEEK

(5)Joint seal and Control spindle seal