Have you ever wondered what makes a ball valve work? In this article, we will dive deep into the world of ball valve technology, exploring its design variations and the impact they have on the flow of fluids. Get ready to embark on a journey of discovery!

The Basics of Ball Valve Technology

Before we delve into the different design variations, let’s start with the basics. A ball valve is a type of valve that uses a hollow sphere (the ball) to control the flow of fluids. The ball has a hole or port in the middle, which allows the fluid to pass through when the valve is open. When the valve is closed, the ball rotates to block the flow, creating a tight seal.

Trunnion-mounted Ball Valves

One of the most common design variations is the trunnion-mounted ball valve. In this design, the ball is supported by a shaft or trunnion at the top and bottom, which reduces the load on the seats and prevents excessive wear. This design is often used in high-pressure and high-temperature applications, providing enhanced durability and reliability.

Floating Ball Valves

Another design variation is the floating ball valve. In this design, the ball is not fixed to any shaft or trunnion, allowing it to move freely within the valve body. The seats are spring-loaded to provide a tight seal when the valve is closed. Floating ball valves are commonly used in low-pressure applications and offer a cost-effective solution.

V-port Ball Valves

V-port Ball valves are designed with a V-shaped ball, which provides precise control over the flow of fluids. The V-shaped ball creates a flow path that can be adjusted to achieve different flow characteristics, such as linear or equal percentage. These valves are often used in applications that require accurate flow control, such as in the chemical and pharmaceutical industries.


Ball valve technology offers a wide range of design variations, each with its own advantages and applications. Whether it’s the trunnion-mounted design for high-pressure environments or the floating design for low-pressure applications, ball valves play a crucial role in controlling the flow of fluids. So the next time you turn on a faucet or open a valve, take a moment to appreciate the intricate design behind it.

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