Inline Valves

[NorthWoodsDiver]

I set up a bottle for 100% o2 a while back and now I am setting up a bottle for 40%/50% (depending on source) before my advanced Nitrox/deco class this summer. for the 100% bottle I picked up one of those new inline valves that fill express is selling because I like keeping the system pressurized on dives but I dont want to risk loosing any expensive gas (although expensive is maybe the incorrect term).

I know these valves just pose another failure point and they are kind bulky and limit how a hose routes comfortably they do offer a nice idea.

I just wanted to get some feedback as to what people think about these valves for use on deco gas. I like to keep all my setups identical but I dont know if these valves are really worth the extra money or hassle.

Oh and if it matters I use mk17/S600s for back gas/sidemount and mk2+/S600's for deco bottles.

 

[captndale]

I picked up one of those new inline valves that fill express is selling because I like keeping the system pressurized on dives but I dont want to risk loosing any expensive gas (although expensive is maybe the incorrect term). I know these valves just pose another failure point and they are kind bulky and limit how a hose routes comfortably they do offer a nice idea.

The expense of the in-line valve is probably as much as that of any deco gas you are ever likely to lose. The real potential problem is in the actual loss of deco gas. Proper procedure addresses both loss of gas and pressureization. You simply crack your tank valve on and then turn it off periodically during descent. That way, you pressurize your regulator and also assure that if the second stage gets bumped you do not loose your gas. Why not wait until you have taken your entry-level technical course and gotten some experience before you start trying to reinvent the system?

 

[Blackwood]

I picked up one of those new inline valves that fill express is selling because I like keeping the system pressurized on dives but I dont want to risk loosing any expensive gas

I agree with Dale's post: that's easily accomplished via procedure.

That said, I'm curious about the packaging of the valves you mentioned. Can you shoot me a link?

 

[NorthWoodsDiver]

here is a link. SCUBA Hoses and Adapters..Variety of Lengths, Colors, Fittings

OSI-SQV2 Inline Shutoff Valve: 9/16-inch M and 9/16-inch F

 

[Jason B]

The deco bottle should be turned off when not in use making this brilliant idea a waste of time and money.

Talk about a solution looking for a problem. I say skip it.

 

[Blackwood]

here is a link. SCUBA Hoses and Adapters..Variety of Lengths, Colors, Fittings

OSI-SQV2 Inline Shutoff Valve: 9/16-inch M and 9/16-inch F

Yikes. I'm with Jason. Save your money.


And fix your O₂ bottle

 

[ianr33]

You may want to get some stainless DIN plugs though to make sure you dont lose any gas when the tank is not in use (By accidentally opening valve in truck bed etc.)

 

[jtivat]

I set up a bottle for 100% o2 a while back and now I am setting up a bottle for 40%/50% (depending on source) before my advanced Nitrox/deco class this summer. for the 100% bottle I picked up one of those new inline valves that fill express is selling because I like keeping the system pressurized on dives but I dont want to risk loosing any expensive gas (although expensive is maybe the incorrect term).

I know these valves just pose another failure point and they are kind bulky and limit how a hose routes comfortably they do offer a nice idea.

I just wanted to get some feedback as to what people think about these valves for use on deco gas. I like to keep all my setups identical but I dont know if these valves are really worth the extra money or hassle.

Oh and if it matters I use mk17/S600s for back gas/sidemount and mk2+/S600's for deco bottles.

One of the first things you should learn in a good technical class is that if you don't need it get it off your rig, and this you do not need.

 

[Blackwood]

One of the first things you should learn in a good technical class is that if you don't need it get it off your rig

Good statement in theory, but unfortunately different schools will teach different what you needs.

 

[captndale]

Good statement in theory, but unfortunately different schools will teach different what you needs.

And who is teaching you that you need an in-line valve? We want to know so that we can warn others against him (or her).