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Scubapro Reg MK-20 Problem


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#1 outback

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Posted 04 March 2005 - 02:43 PM

This came up on another forum - thought I'd replicate it here just in case. I think the original message was intended for NOAA divers, so there doesn't appear to be a recall out there. Yet...

See link for a picture. Scary if this happened underwater.

http://www.chumclub....hread.php?t=150

This is an important Diver Alert issued by the NOAA Dive Center, Seattle, WA.

Effective immediately, all NOAA divers must discontinue diving with the Scubapro MK-20 first stage regulators. Another catastrophic failure (reference photo below) of a MK-20 was recently reported to the NOAA Diving Center, that could have produced serious injury.

We are currently working with Scubapro to replace all MK-20 regulators with MK-25 regulators as soon as possible. In the interim, the NDC has a limited number of MK-25 regulators available for immediate issue on a case-by-case basis. If you have a MK20 regulator and have an urgent need to dive, please contact Lisa Glover at the NOAA Dive Center to arrange for a replacement regulator. She can be reached at Lisa.Glover@noaa.gov or 206-526-6446.

We understand that this may pose significant hardship on a number of our divers, but feel that the potential risk involved with continued use of these regulators necessitates this action.

Edited by outback, 04 March 2005 - 02:44 PM.


#2 Genesis

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Posted 04 March 2005 - 04:03 PM

I don't see how replacing the 20s with 25s changes anything. 25s are just 20s with a different HP seat plug (that allows adjustment of the IP without taking the reg apart)

If this is a design flaw, it will apply to the 25 as well as the 20. If its a maintenance problem (e.g. radical overtorquing of the yoke or din attachment) then its not a problem with the Mk20, but rather with how it has been treated.

#3 intotheblue

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Posted 04 March 2005 - 04:50 PM

another source has informed me they have had a problem like this from over (not) torquing the yoke nut... but it would not surprise me if this was coupled with being attached to a cylinder when the tank fell over on the reg. SP reportedly has not taken a position on this yet...
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#4 Genesis

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Posted 04 March 2005 - 09:18 PM

another source has informed me they have had a problem like this from over (not) torquing the yoke nut... but it would not surprise me if this was coupled with being attached to a cylinder when the tank fell over on the reg. SP reportedly has not taken a position on this yet...

That'd do it - landing a kit on the reg would definitely overstress the metal there....




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