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Here are the type that I use and I run them in DIN. They are no longer made and difficult to find. On a side note, the metric sized valves won't even make it to one fill. We had one on a cylinder that made it about half way to full before the valve was launched up through the ceiling tiles of...

Depends on what Y and H valve you are comparing as these valves have been constructed in various configurations. For single cylinders, I only use Beuchat Y valves with the double dip tubes.

4240 FSC safety/rescue equipment from the NSN. Most likely cylinders for SCBA applications.

In my old dive unit in Wyoming, we use to shovel all the snow off the ice in a star pattern branching outwards from the hole to about 75-100 feet. If for some reason we came off the line, we could look up and see the line that could guide you back to the hole. Granted, worked in daytime but we...

Just tossing out some averages to think about. First, you are just getting into buying gear so getting into diving and having a boat, you will most likely own several different tanks sooner or later so what you get first might not matter too much. Second, you are getting into Nitrox and looking...

I may be the only diver on this site that has a P-valve on their wetsuit. I would recommend to any diver looking at buying their own gear, at least get your suit, regs, and mask first. Some of the rentals for those items can be rather unpleasant.

No problem

Why not, I do. Great deco gas at/above 20'.

I would let them go for 750.00 if you are interested. Unfortunately, I only have two 100s remaining and those are in a doubles setup that I plan on keeping for now. I dive mostly single X8s now.

Some folks use a D-ring attachment to secure their fins while they enter and exit heavy surf to keep their hands free as you can take a wave and drop a fin if you get taken off balance. While you could use the strap, not all of these fins have adequate drain holes so you would be carrying foot...

Thinning out some of my cylinders. I have X8 doubles with a Halcyon manifold (DIN) and Highland bands. Just had them hydro/vis/filled in July 2021. Currently have filled with 28% but can run them down to 500 if you don’t have your cert. This specific set was rarely used as it was a backup to a...

Relax, just putting it out there as he bought one several years ago and has not changed the battery. He could of picked it up used from somebody else for all we know. If he has already sent it in or has a new model, just ignore the information.

Send it in and get it serviced under the recall Product recall for Suunto Wireless Tank Pressure Transmitters and Suunto Tank PODs

As long as you don’t push/hold down the purge valve on the regulator, you should not have an issue with water intrusion from soaking it in water. Put your caps on and toss it in. I have done this for 40+ years, never had an issue

If you are running a Halcyon plate, or any plate for that matter, just make your own. Cut a piece of webbing and apply heat to the ends of the webbing to keep it from fraying. Place a hole towards the end of the strap and secure it through one of the bolts on the backplate. I use a small bungee...

You would have been ok….now you just need to worry about all of the other things that can kill you down there :) Dr Geoff Isbister, an expert in envenomation at the University of Newcastle, NSW, has published many articles and studies on white-tailed spiders...This phenomenon, known as necrotic...

Standard is fine up to 40% O2

Like many others, I just run it under a small knife that I carry on my waist strap

A friend of mine (Gordon Racine) died in BUDS back in 1998. I tried to go to BUDS in 1986 but I did not pass the dive physical because my uncorrected vision was not good enough for the program. I worked with Gordon and helped him put his package together when we worked at North Island and he was...