SI-TECH inlet valve o-ring size?

[Jens Bölte]

Hi,

I have a Si-Tech inlet valve that inflates the suit unintentionally, so it leaks a little bit. I would like to disensemble it and to replace the o-rings. Does anyone know the size of these o-rings?

Best wishes Jens

 

[lexvil]

Don’t know the o ring size but have you tried taking it off and soaking it? I’ve also found a small squirt of spray silicone in the inlet works for freeing up a sticky valve.

 

[jmark18]

sorry to hijack your thread but I am looking for a replacement male inlet nipple. 25207 part no. Does anyone know where I can purchase one?

 

[Zef]

sorry to hijack your thread but I am looking for a replacement male inlet nipple. 25207 part no. Does anyone know where I can purchase one?

6 euros:

Sitech Male nipple

Sitech Male nipple

jonasdive.com

-Z

 

[Jens Bölte]

Don’t know the o ring size but have you tried taking it off and soaking it? I’ve also found a small squirt of spray silicone in the inlet works for freeing up a sticky valve.

Hi,

I try to „clean“ it an ultrasonic bath but no avail. So I assume that at least one of the two o-rings is damaged.

Best wishes Jens

 

[lexvil]

Hi,

I try to „clean“ it an ultrasonic bath but no avail. So I assume that at least one of the two o-rings is damaged.

Best wishes Jens

I’ve freed up sticky inlets with this stuff

after that I would replace it, I think I have a spare valve so if I get time later I’ll see if I can open it up and get an idea of the o ring size.

 

[lexvil]

this is the closest I have, installed and being tested no, it is holding pressure fine and the button moves freely (008)

this is the internals

it takes two hex keys to unscrew the unit (2.5mm) you have to remove the sticker to access the screw

Overall a 10 minute job.

 

[blatter]

008 orings seem to work for me as well. Great post lexvil!

 

[Snusmumrik]

008 orings seem to work for me as well. Great post lexvil!

For those people that are living not in damn imperial measure units world :
AS568-008 o-ring has
Outer diameter 8,04mm
Inner diameter 4,47mm
Cross-section 1,78mm

 

[Jens Bölte]

Hi,
Thanks for the all the help. I cleaned the valve. It is working again. I did not need to change the o-rings. Now I have to figure out how to glue the sticker to the metallic plate?

Best wishes Jens