rstofer
Contributor
Actually it is the Delta 4 FDX10 the CDX5 first stage is paired with the GT3 second stage.
Their choice was based on superior cold water performance. I believe they replaced the Sherwood Maximus and Blizzard which have a long history as rock solid cold water workhorses.
In addition to the cold water reliability the Delta 4 has overall breathing effort among the best tested.
These tests were performed before the introduction of the Oceanic EOS which shares the FDX10 first stage. Also because of licensing contracts the swivel hose is now on the EOS instead of the Delta 4.
Absolutely right! I have no idea why I typed CDX5 other than I have an Omega II setup with that first stage.
The testing and selection was done in response to the loss of 2 Coast Guard divers. I don't know the story but somehow regulators were part of it.
Richard