Valve Float.

[Edu.T]

That's really a great video, take a look: YouTube - Valve Float

 

[Dino-Spumoni]

That is a good video.

 

[Gav-EK9]

yeah cool vid that 1st bit is a bit hypnotising lol probz just me though

 

[Lord Cambodian]

**** can you say seizure ??