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Learn about the different control valve types used in Engineering! This 3D animated video explains how the ball, butterfly, diaphragm, gate, globe, needle, pinch, plug, relief and safety valves work. We discuss rotary and linear motion valve designs, how valves get their names and the advantages and disadvantages of each valve type.
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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▶️Rotary motion valves are fast acting valves that only require 90 degrees (1/4 turn) of rotation to move from the fully open to fully closed position. Examples of quarter turn valves include the ball, butterfly and plug type valves.
Linear motion valves act more slowly than rotary motion valves. The disc is moved in a linear direction with relation to the seat. Examples of linear motion valves include the gate and globe type valves.
What follows is a short summary of characteristics of each valve type.
How Ball Valve Works
¼ turn. Fast acting. Open and close only. Low pressure drop across the valve.
How Butterfly Valve Works
¼ turn. Fast acting. Open, close and throttling. Low pressure drop across the valve.
How Diaphragm Valve Works
Linear motion. Open, close and throttling. Low pressure drop across the valve.
How Gate Valve Works
Linear motion. Open and close only. Low pressure drop across the valve.
How Globe Valve Works
Linear motion. Open, close and throttling. Medium pressure drop across the valve.
How Needle Valve Works
Linear motion. Open, close and throttling. Very fine flow control.
How Pinch Valve Works
Linear motion. Open, close and throttling (between 10 and 95% of flow capacity). Very low pressure drop across the valve.
How Plug Valve Works
¼ turn. Fast acting. Open and close only. Low pressure drop across the valve.
How Relief Valve Works
Linear motion. Opens proportionally to the amount of over-pressure applied.
How Safety Valve Works
Linear motion. Opens fully in the event of over-pressure, or is closed fully.
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