Scubapro S620TI allowing water in

[Jga37]

You've now heard about three of the six possible sources of a leak on inhalation:
In order of likelihood:
- hole/tear in mouthpiece
View attachment 621983
- flaw or debris in exhalation valve
View attachment 621981
View attachment 621982
- wrinkle, hole or dislodged main diaphragm
View attachment 621989
View attachment 621988
View attachment 621985
The last three possibilities are
- sheared, dislodged or wrong-sized oring(s) sealing the barrel or adjuster to the case
View attachment 621986
View attachment 621987
- a crack or flaw in the case itself
View attachment 621980
- sealing issue where the Venturi vane penetrates the case.
View attachment 621984

You didn't mention whether they changed the exhalation valve after finding debris. The debris may have been a red herring, with the more likely problem being a flaw in the skirt of the valve leaflet.

 

[Jga37]

This is very helpful I will pass on to my tech at the shop.

 

[rsingler]

This is very helpful I will pass on to my tech at the shop.

Hate to say it, but it's not encouraging if any of this is news to him/her.

 

[rsingler]

And by the way... welcome to ScubaBoard!
Hope to see you back!

 

[Bob DBF]

You've now heard about three of the six possible sources of a leak on inhalation:
In order of likelihood:
- hole/tear in mouthpiece
View attachment 621983
- flaw or debris in exhalation valve
View attachment 621981
View attachment 621982
- wrinkle, hole or dislodged main diaphragm
View attachment 621989
View attachment 621988
View attachment 621985
The last three possibilities are
- sheared, dislodged or wrong-sized oring(s) sealing the barrel or adjuster to the case
View attachment 621986
View attachment 621987
- a crack or flaw in the case itself
View attachment 621980
- a sealing issue where the Venturi vane penetrates the case.
View attachment 621984

You didn't mention whether they changed the exhalation valve after finding debris. The debris may have been a red herring, with the more likely problem being a flaw in the skirt of the valve leaflet.

I love pictures. Thanks!

 

[halocline]

Does this 2nd stage have a seat saver that separates the seat from the orifice when the reg is not pressurized?

 

[rsingler]

Scubapro doesn't have that feature. They're stuck in the 20th century.

 

[buddhasummer]

I've had issues before using SP reusable mouth piece clips.

***causing wet breathing.

 

[buddhasummer]

A folded exhaust valve a couple of times, but my fault.

 

[Geo7]

I'll give the tech in question the benefit of the doubt, and suspect the intermittent nature of the leak makes it harder to diagnose than the usual suspect causes. I would take that stage completely apart and inspect every last part.

Would be interesting to hear how this turns out!