Recall, Do own a Scubapro MK20?

[akscubaduck1]

MK 20 has been recall do to the yoke nut. If over tightened the first stage might fail. Please return to dealer for a free upgrade when you do your yearly service or sooner!!!!

 

[mike_s]

More info FYI

http://www.scubapro.com/safety_notices/mk20servicerecall.pdf

 

[Xman]

finally they admit to it eh? They tried to tell me it wasn't a fault when my Mk20 blew itself in half. They said it wasn't due to the nature of the parts, and yet they rebuilt it with a steel part in place of a brass one. Hmmm

http://www.scubaboard.com/gallery/showphoto.php/photo/17677/cat/533/page/2

 

[redacted]

finally they admit to it eh? They tried to tell me it wasn't a fault when my Mk20 blew itself in half. They said it wasn't due to the nature of the parts, and yet they rebuilt it with a steel part in place of a brass one. Hmmm

http://www.scubaboard.com/gallery/showphoto.php/photo/17677/cat/533/page/2

That is a different failure mode and parts than the one addressed by the recall. But the turret bolt on balanced piston regs is quite vulnerable to over torquing.

Make sure your service provider has a torque wrench capable of measurements in the 35 to 70 inch-pound range for Scubapro BP 1sts.

 

[mike_s]

finally they admit to it eh? They tried to tell me it wasn't a fault when my Mk20 blew itself in half. They said it wasn't due to the nature of the parts, and yet they rebuilt it with a steel part in place of a brass one. Hmmm

http://www.scubaboard.com/gallery/showphoto.php/photo/17677/cat/533/page/2

so were you diving when this "blew" ?

 

[Xman]

Fortunately not. Had just pressurised the reg turning on my valve.
Also: I am aware that the bolt must have been overtightened, but it was always serviced by approved scubapro servicing shops. It just seems that the same must happen to other regs with a similar retention system for the swivel, yet they do not appear to experience this failure like the Mk20 has been known to.

 

[akscubaduck1]

The yoke nut is still brass. They just added a flange so it wouldn't bottom out. I was the 1st and only owner of my MK20 & they gave me the fix for free!