PX3 Piston O-Ring?

[aowdan]

i bought a px3 ( 1st stage) about 7 months ago. 4 dives later, i blew an o-ring somewhere. i think its the piston o-ring. air is coming out of the ambient ports. returned to lds, great service, no questions they just handed me another one. about 1 month ago, same thing happened. have not had the chance to return the 2nd one.

since they are out of the office till the 13th i figured someone else might be able to help out. anyone had this problem with the px3? heard of it? i don't know anyone else here that has one.
thanks in advace

dano

 

[visibilityunlimited]

Hi actually your best bet is to get in touch with Ron Landess at Oceanic's customer service department 510-562-0500 extention 426 or Mark Lane at extention 428. They will be more than happy to field your questions.

 

[redacted]

All balanced piston 1st use a small o-ring between the piston shaft and the regulator body to establish the seal between the high pressure chamber and the ambient chamber. The pressure differential of over 3000 psi requires tight tolerances and o-ring resistant to extrusion. I believe scubapro, a number of years ago, used a bad lot of o-rings and had lots of problems. Reg mfgrs have dealt with this problem successfully for many years now so I'm sure your particular problem is not characteristic of PX3s.

Do you know if the LDS replaced the entire PX3 or if they just replaced the failed o-ring? Replacing the failed o-ring should be the norm, but you must be sure to use the correct hardness o-ring.

 

[aowdan]

awap, thanks for the info. i have had the class on regulator repair. i just don't have all the tools or replacement parts to do it myself, otherwise i could. i don't want to void a warranty if i don't have to.

dano