Poseidon 3886 for 80% o2 use service kit

[wheelsdan]

Hi I'm looking for a 3886 service kit for a older cyklon first stage. But my friend that I'm servicing this for is using it as a deco stage reg so using 80% o2 . As I've seen on your message the standard kit that I am struggling to find isn't compatible for o2 over 40% . Does anyone know where i can purchase such a kit please
Thanks
Dan Metcalfe
Wheelsdan

 

[Bigbella]

Hi I'm looking for a 3886 service kit for a older cyklon first stage. But my friend that I'm servicing this for is using it as a deco stage reg so using 80% o2 . As I've seen on your message the standard kit that I am struggling to find isn't compatible for o2 over 40% . Does anyone know where i can purchase such a kit please
Thanks
Dan Metcalfe
Wheelsdan

The 3886 service kit for the 2940 "Thor" regulator, the last of the Cyklon 300 series, is available through Silentexplorers.com; though the o-rings in that kit are all conventional nitrile and were never intended for anything other than air use.

You’d have to cobble together the appropriate-sized viton, etc o-rings yourself, since those kits had never been updated, and both models discontinued before the wider sports use of nitrox -- though the very pricey 3872 viton kit does share an overlap with a number of older Poseidon first stages.

The earlier 2980 version would have been a simpler choice, since it had only three common-sized o-rings that would have to have been sourced, since the HP / LP ports themselves contained only nylon gaskets. We successfully converted a number of those for higher-O2 mixes, years ago -- but nothing so high as 80 percent; and never attempted that with the 2940s.

The Swedes, however, do not approve of such things . . .