How to disassemble a SI Tech exhaust valve

[emoreira]

Hi, the SI Tech exhaust valve of my Drysuit is leaking. I could remove from the drysuit but I do not know how to disassemble it.
The valve rotates as if it has sand in it (it's a used DS).
I have the SI Tech brochure, but there is no disassemble instructions.
Any help is much appreciated.

 

[Marie13]

Have you looked for a video on YT?

 

[emoreira]

I'll try again, but, you know, SB is my first step, always.

 

[emoreira]

In this video the valve was wrongly assembled and the guy assembled it also wrong.