OP
So the incorporation of the spacer with the small opening was an effort to keep water out of the first stage? Seems odd to me but if it doesn't effect performance, who am I to question the AL engineers.
Question Need help with an AL Titan
- Thread starter Sensorone
- Start date
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OP
My mistake. You said it was to improve nitrox compatibility. When you spoke of rental gear and difficulty of inspection with the small opening my mind went to like it was a simple ACD attempt. What purpose does that smaller opening have. I get the material change from nylon to stainless but don't get the small opening. Why not just go to the washer we all see now and skip that small opening?
I don't have that answer...perhaps it was their thinking that the sintered filter needed to be supported, perhaps like you wrote that it inhibited ingress of water, perhaps that washer was "borrowed" from a different 1st stage where the specifications of it actually had a purpose, or perhaps it was a way to keep things a bit more proprietary for Aqualung, who knows.
The funny thing is that I bought an old Titan 1st stage off of ebay sometime in the past year, and one of the first things I did was pull the HP side apart to check the condition of everything...I noted the washer with the small opening and was going to post a similar question to yours when I came across a 2017 post by buddhasummer inquiring about the same washer design in a Titan that he purchased. It prompted me to peruse the collection of Aqualung spare parts manuals and other documents I have collected and found the info about the running change.
-Z
Well again, there is no explaining the weird s---t that people do or in this case a company like AL . Someone must have had a well thought out reason and I am waiting to hear it other than it just being some weird things that come to be. I will not discount the possibility that it made total sense to somebody at some time, and then it did not, thus the note on the PL.
. Someone must have had a well thought out reason and I am waiting to hear it other than it just being some weird things that come to be. I will not discount the possibility that it made total sense to somebody at some time, and then it did not, thus the note on the PL.
OP
Visited with my LDS tech today (40 plus year AL dealer and service) and asked him his opinion of the spacer with the orifice opening. He said it doesn't effect performance and mused that some engineer somewhere thought is was a good idea, but no idea the rationale. Good enough for me. Thanks for all the replies!
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