Search results

There's nothing on the SP U.S. site about nitrox regulators or oxygen use.

I would be very curious to know specifically what the material is on the seat for the ‘nitrox’ kit. The whole nomenclature is deceptive, because any regulator is fine for nitrox up to 40%, and as far as I know SP specifically says the MK25 is not 100% O2 compatible. In other words, they are...

You might not need the socket to remove the yoke nut; it actually depends on the curvature of the yoke itself. Sometimes you can get a big adjustable wrench to grab the yoke nut and break it loose. I’ve even used a vise in a pinch to grab the nut and slipped a PVC pipe over the body of the reg...

If this is for a MK25, I can sell you a yoke kit, because not that long ago I bought a MK25 used and converted it to DIN because I use it cave diving. In terms of the measurement, the 1st stage with yoke would be about the same distance from the tank as with DIN. It’s the adapter that makes it...

I’m not sure if it fits this discussion, but on the topic of skipping maintenance, just today I opened up my MK2, which I believe was last rebuilt at least 20 years ago. It’s been working fine, but I’m considering turning it into an O2 deco reg, so first I wanted to check the inside. It looked...

It really depends on how the o-ring is situated. If it’s captured in the end of the DIN retainer, like the SP MK10/15/20/25, you could use a 70 and have no problems. If it’s in a groove around the retainer out-bound of the threads, maybe there’s more possibility for extrusion and a 90 would be...

I use yoke for recreational diving (although I think the last time I did a non-cave dive was well before the pandemic) so I keep a set up for that. One of these trips to Mexico for cave diving I’d like to take few days to go to Coz, and for something like that I’d just bring the right length...

It’s hard to imagine properly torqued DIN retainers coming loose on regulators unless someone bangs them around while they’re attached to a tank or picks the tank up by the regulator; I’ve seen that stunt pulled a few times on dive boats. Anyhow, I wouldn’t use loctite unless the manufacturer...

You technically can remove the yoke retainer with a vise or big adjustable wrench, but I assume you’ll want to put it back together, and get at least in the ballpark for the torque spec. That means a yoke nut and torque wrench. In a pinch, I have fixed regs in the field and just guesstimated the...

Keep in mind the HP seats are sealed with IP, not supply pressure, so I’m a little skeptical that opening the tank quickly will damage them. I suppose you could do an experiment; hook up an IP gauge and watch it when you open the tank valve. It’s not going to bounce up and then back to IP, it’s...

I soak my regulators with the dust caps installed, unpressurized, for several hours after a salt water dive. This is because there are exposed threads on practically every regulator; that doesn’t mean you see the threads, it means they are outside of an o-ring that provides the seal. The SP...

You don’t need an inline adjustment tool with an IP gauge attached to it. You can easily just listen to hear it leaking. In fact, I serviced my regs (many!) for years without an inline tool and I still have several 2nd stages that the tool doesn’t work on, so I do those the old fashioned way...

Yes, it’s a medium.

Here are some photos, I thought I posted these already.

I’m not going to read this whole thread, but what you are suggesting, i.e going into a cave zone with a cave instructor after completing the cavern class, is not unusual. Usually it’s done as part of the intro to cave class. I think being guided into the cave zone as a cavern diver sends a...

There’s nothing wrong with double 80s, actually I kind of like them. They trim way better than single 80s. I wouldn’t add 10 lbs, maybe start with 6 and do a nice easy dive and blow them down to 300 on your safety stop. I would try to keep the weight fairly low and see how your trim goes. Heavy...

I have a DSS stainless steel plate with harness and a 20lb DSS wing for sale. It actually belongs to a friend who asked me to sell it for him, it’s been used maybe 10 times total several years ago and stored well since. I honestly don’t know what it’s worth, I’ll start at $300 and see what the...

I have found that MK5s tend to hold IP more reliably for longer periods of time. I don’t know if I’ve ever had one start to creep. But MK10s work really well too, they have the advantage of being easy to convert to DIN (if you use DIN) and practically all of the ones I’ve ever seen have SS...

Haven’t been around this board in a few years, but I’m very familiar with working on MK10s. The plus seat results in the highest IP of the three seat sizes. So if you want to lower IP, use the - or = seat. Edit: I see someone else suggested that. The taller the seat, the lower the IP, all other...

You’re right, it’s not necessary, but I would advise anyone who is starting from scratch (i.e. not a currrent BM doubles diver) who is primarily interested in Mexican caves to learn sidemount from the beginning. Beccause I already had some BM doubles experience, I did all my cave classes in BM...