https://youtu.be/TQ5w1Q79BXA Pilot Operated Safety Relief Valve The main idea in pilot operating valves is that a little valve which is called pilot is used for ordering and starting a bigger valve. Indeed this valve operates as a starting key for starting a bigger valve. This video is a part of safety and relief valves video…
https://youtu.be/7HmXZe8oPqI There are two type of plug valve: 1- Lubricated plug valve 2- Non-lubricated plug valve This video is a part of plug valve video clip which describes this type of valves.
https://youtu.be/NrRDY1fe_Rs This video is a part of industrial valve video clip which describes ball valve.
https://youtu.be/EUANR3-EyTg This video is a part of industrial valve video clip which describes butterfly valve.
https://youtu.be/IYyBRnShVyc This video is a part of industrial valve video clip which describes these phenomena.