@JohnnyC-
My understanding is as is, the unit is free and clear to 300feet. Beyond that, it's simply adjusting IP. No spring adjustment needed.
Can I ask how do you adjust the IP without going near the spring?
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@JohnnyC-
My understanding is as is, the unit is free and clear to 300feet. Beyond that, it's simply adjusting IP. No spring adjustment needed.
Many KISS (and Kiss-style-orifice) divers are replacing springs to increase IP, along with a smaller orifice, to get deeper max-depth settings. I think that's what rddvet was referring to.Can I ask how do you adjust the IP without going near the spring?
Unfortunately i’m headed to Miami today or I’d walk across the street to CCDS and ask myself. If it’s only a needle valve, that would be great. Personally i’m not a fan of blocked-IP first stages for a variety of reason. There really isn’t any real task loading with a needle valve, and you’re gonna have an O2 MAV anyway, might as well just do it.
Yeah, you’ll definitely be able to get parts for it pretty much forever.
Can I ask how do you adjust the IP without going near the spring?
Exactly, you do have to adjust the spring. I'm sure its just an oversight by the OP.you can adjust the IP on a SP Mk 25 without opening up the reg or touching a spring. You just need the right size hex wrench to turn a threaded adjuster that increases preload on the spring.
Can I ask how do you adjust the IP without going near the spring?
Thanks for that, I use a rEvo so I am familiar with the setup. Any change in IP is caused by adjusting the spring tension using a hex or allen key. It was just when the OP mentioned that they could adjust the IP without going near the spring I thought maybe I am missing something that's all.The first stages on the Fathom are Apeks DS4's. The O2 1st stage replaces the stock spring with a stronger one and it also comes with a block to lock the IP at a fixed rate, which should be good enough to get you to 400' without any modification. Divers that need to go beyond 400' can adjust the IP through the use of a hex key on the 1st stage, or they can remove the block plate and then have to fiddle with the needle valve on descent and ascent.
I'm not sure how many people are going deeper than 400' on a regular enough basis that it's a real concern.