How Ball Valves Work

This 3D animated video explains how a ball valve works, its main components, advantages, disadvantages and its applications. We use animation to show the valve moving from the open to close position and vice versa.

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Ultimate Valve Playlist with detailed video tutorials of each valve type!

https://www.youtube.com/playlist?list=PLjoH8XiKuSWlZA8IMStMGEbtMHx7WrU5s

Or watch each video separately!

Valve Construction and Components Explained
https://www.youtube.com/watch?v=naXxsXJzLvg

How Globe Valves Work
https://www.youtube.com/watch?v=GSEIpwf5FBI

How Ball Valves Work
https://www.youtube.com/watch?v=RvD1R8Tlr9M

How Gate Valves Work
https://www.youtube.com/watch?v=C5ZMLWujKGs

How Butterfly Valves Work
https://www.youtube.com/watch?v=jZgOb55J8Eg

How Diaphragm Valves Work
https://www.youtube.com/watch?v=dxelSWY6bhg

How Plug Valves Work
https://www.youtube.com/watch?v=WwrWKBydxeM

How Pinch Valves Work
https://www.youtube.com/watch?v=v1BE4wtUOfw

How Pneumatic Valves Work
https://www.youtube.com/watch?v=fwCmcD8p2Kw

How Swing Check Valves Work
https://www.youtube.com/watch?v=d9e9rQmyR0s

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Introduction
Ball valves obtain their name from the type of valve disc used. Ball valves are ¼ turn valves and are suitable for stopping and starting flow. Ball valves are not suitable for throttling/regulating flow.

Operation
The ball of the valve has a hole drilled through the middle. When the hole is in line with the valve body and connected piping, the valve is in the open position. When the hole is perpendicular with the valve body, the valve is in the closed position. The handle (actuator) indicates the position of the valve (in-line = open, perpendicular = closed).

Advantages
The pressure drop through the ball valve is vey low.
The ball valve is fast acting.
The seat to disc fit is tight and thus the chances of leakage/passing are reduced.
The valve is cheap to manufacture and maintain.
Ball valves require no lubrication.
Only a small amount of torque is required to actuate the valve and gearboxes can be used to make actuation of larger valves easier (lower torque on the primary side required).

Disadvantages
The ball valve is poorly suited to throttling applications.
The ball valve seat is often constructed from plastic or polymer materials, this makes the valve ill suited to high temperature applications.

This video lesson is part of our Introduction to Valves course:

https://savree.com/en/list-of-savree-courses/

You can read more about ball valves in our technical encyclopaedia:

https://savree.com/en/product/ball-valve/

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Видео How Ball Valves Work канала saVRee