I just got off the phone with the LDS and DUI, and it sounds like they're going to make the change from the LP Apeks to the SiTech.
Out of curiosity, what are the valve options for the DUI suits? Low-profile Apeks, SiTech, & ?. Is there a high profile Apeks you can specify too? I've seen OLD DUI suits with an Apeks exhaust valve that was pretty tall. The LDS said there were 2 options, HP and LP. They seemed to think the LP one was a SiTech.
How much of a profile does the SiTech have compared to the LP Apeks? I was looking at the drysuits at the LDS today, and the valves on the Bare suits looked just like the SiTech pics that were posted in the link that.
(Just as I was typing this, my LDS called to say the change has been made. And they mentioned it's the same valve that Bare uses, so I guess the above question has been answered. FWIW, the LDS wasn't aware of the SiTech option since apparently it's not mentioned in DUIs literature... and I've sure never seen it on their website)