I have a couple of pistons and would hate to see this thread degenerate into a piston vs. diaphragm discussion.
Fair enough. But, I think it's a fair question, that I haven't seen an answer to on SB.
Is there a failure mode for, say a SP Mk 25 or an Atomic 1st stage, whereby the IP is solid pre-dive, but the reg still fails catastrophically during the dive?
If the answer it no, not when the reg is serviced and maintained correctly, then the question is, okay, but is there such a failure mode when the reg is serviced incorrectly? Say, by re-using a part that should have been replaced? Or is there such a failure mode when the reg is not serviced in a timely fashion (say, not serviced for 10 years)?
I'm not trying to make it piston vs diaphragm. I am just trying to better understand the pros and cons of each. The only piston vs diaphragm discussion will be my own, in my own mind, after I learn as much as I can about the pros and cons of each. My diving career is short, so far, and this failure of DD's is the first time I (in my short time) have seen real discussion of such a failure. I didn't know it could happen. All I have ever really seen people talk about is HP seat failure and I have understood that to be a failure that could happen with piston or diaphragm.
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