Regulator failure due to auto closure feature

[BlueTrin]

Alert Diver | Catastrophic Regulator Failure

I didn’t know that some first stages had this ‘feature’

 

[runsongas]

there was a recall.

Aqua Lung Voluntary Recall on ACD Yoke regs

some people still seem to like the feature and it does seem to require a screw up on torquing the ACD to cause the failure.

 

[JackD342]

Alert Diver | Catastrophic Regulator Failure

I didn’t know that some first stages had this ‘feature’

Oceanic had a similar feature on some brands/models, no longer available.
Mares recently introduced an add-on option kit.
Aqualung newer production has a modified design to eliminate the issue if torque of the ACD shutter valve loosens, no communication regarding any retrofits at this point.

 

[uncfnp]

Here is 25 pages of discussion...

Aqualung Legend LX First Stage Failure at depth

Aqualung must be happy with the response to this feature since it is no longer optional and expanding the models with this feature.

 

[dberry]

AFAIK, the ACD issue only applies to the yoke models, not DIN. I've been very happy with the ACD feature on my (DIN) regs.

 

[BlueTrin]

AFAIK, the ACD issue only applies to the yoke models, not DIN. I've been very happy with the ACD feature on my (DIN) regs.

I am not versed into how a regulator works. Is there a reason why the DIN ones are more resilient ?

 

[JackD342]

AFAIK, the ACD issue only applies to the yoke models, not DIN. I've been very happy with the ACD feature on my (DIN) regs.

Correct. Even if the DIN version loosens, result is not the same.

 

[JackD342]

I am not versed into how a regulator works. Is there a reason why the DIN ones are more resilient ?

Check the thread link from @uncfnp for details. In brief, the loose part can create a restriction/seal on face of some yoke valves, but face of DIN valve is different.