Rapid Exhaust on Inflator - pros/cons

[rhwestfall]

When I was new, I pulled on mine and tore the hose right in half at one of the convenient perforations, leaving me with no way to inflate the BC.

then the inside cable was not the correct length..... The valve should trigger before the hose is extended to its stress point...

or, your corrugated hose was in poor shape, but then again, the cable should not have let it stretch that far....

---------- Post added August 1st, 2013 at 08:02 AM ----------

How much of an inconvenience is the hose placement? I will be diving singles for the forseeable future.

Its just that things don't sit unemcumbered. If you use a STA, it may not even conflict.... Likely if I flipped my 1st stage, I might not have any contact, but I prefer it below vs. above...

 

[flots am]

then the inside cable was not the correct length..... The valve should trigger before the hose is extended to its stress point...

or, your corrugated hose was in poor shape, but then again, the cable should not have let it stretch that far....

I was brand new. It could have been any or all, but it really doesn't matter.

A corrugated hose is by definiton, a weak spot and the combination elbow-shoulder dump is unnecessarily complicated and prone to failure.

While I'm by no means "DIR," it's still a failure point without an advantage.

flots.

 

[rhwestfall]

I was brand new. It could have been any or all, but it really doesn't matter.

A corrugated hose is by definiton, a weak spot and the combination elbow-shoulder dump is unnecessarily complicated and prone to failure.

While I'm by no means "DIR," it's still a failure point without an advantage.

flots.

then so is a butt-dump.... because the inflator assembly accomplishes it all.....

 

[redacted]

then so is a butt-dump.... because the inflator assembly accomplishes it all.....

There should still be a butt-dump as many shoulder pull-dump designs do not provide an OPV function. I suspect a corrugated hose actually gets some failure protection from a pull dump as long as the wire is intact. When the wire breaks (and it will), then the hose is quite vulnereable to a stronger pull - especially if it has not been regularly inspected and maintained. But the spring, valve seat and valve in the pull dump are added failure points. That would really not be so bad except they rarely get inspected and maintained until there is a failure.

 

[GrumpyOldGuy]

A butt dump that fails open still allows the bcd / wing to hold a reasonable amount of air as long as you are vertical.A shoulder dump does not unless you count ascending feet first a skill you have mastered.

Any dump has moving parts and can break, a pull shoulder dump just has more parts. The real issue as Awap eluded to is the number of moving parts and the time you take to inspect them. A BCD with multiple dumps and pull dumps has a lot of moving parts and often little formalized maintenance other than a quick rinse. Personally I still worry more about a stuck inflation valve than dumps failing.

 

[rhwestfall]

Personally I still worry more about a stuck inflation valve than dumps failing.

Amen!

 

[tracydr]

I love my DSS gear, but the center location of the hose is an "inconvenience" with my first stage for diving singles.

As to a rapid exhaust (aka - pull to dump), if you are so inclined, swap out the elbow/assembly. DR/DGE makes the part, but the only tricky part may be to find an appropriate thickness washer....

I agree. I dislike the location of the hose as well. One of very few things that I don't like about my Torus. Overall, its a very nice wing.
As for a pull dump, I've never had one and I'm not sure I would like one. I suspect I wouldn't like a pull dump but that could be just because I haven't ever had one. Not sure what the pros and cons of having one would be.

---------- Post added August 1st, 2013 at 06:15 PM ----------

I was brand new. It could have been any or all, but it really doesn't matter.

A corrugated hose is by definiton, a weak spot and the combination elbow-shoulder dump is unnecessarily complicated and prone to failure.

While I'm by no means "DIR," it's still a failure point without an advantage.

flots.

You don't use a STA with the DSS wing/BP. It's designed to be used without a STA.

 

[flots am]

You don't use a STA with the DSS wing/BP. It's designed to be used without a STA.

???

What's this in reply to?

 

[Locus]

I spoke about inflator valve location with an employee at my LDS. He has an OMS wing that, like the Torus, has the inflator going into the wing at the center top, behind the head. He also had problems with the hose interfering in the first stage, so his workaround was to get a longer inflation hose and, instead of having the hose run down the front of his chest, he routes it down the back of the wing to his left side at his waist (near where a dir spg would be). The inflator button stays there, he says, and it still dumps fine without having to be pointed upwards (as PADI instructs). He claims that lifting the end of the hose up while dumping fills the bcd with water. Thoughts on this?

 

[buddhasummer]

???

What's this in reply to?

Post #11 I assume.