H-valve acceptable ?

[PvtStash]

Hellohello , anyone know if an H-valve (single tank, redundant 1st/2nd stages) is acceptable as redundancy over a seperate pony bottle in the SDI solo program ?

Also... if a pony bottle IS mandated do they require any particular size?

 

[akscubaduck1]

I just finished my SDI manual and yes H and Y valves are accecptable.
But I would still carry at the very least a 19cf bottle.
The smallest I carry is a 40cf bottle.
Dive Safe, Dive Often, Dive Prince William Sound, Alaska
Terry

 

[BEM]

Should be at least 1.5 times the estimated volume of gas required for the dive. So you require 61 cu ft for a dive, your tank(s) should hold 92 cu ft and also have 31 cu ft pony.

 

[texdiveguy]

In the past I logged tons of dives on a st hp130 with an H-valve plus a 19cf. pony....nice combo.

 

[PvtStash]

In the past I logged tons of dives on a st hp130 with an H-valve plus a 19cf. pony....nice combo.

I bought an steel LP 121 3 wks ago...

 

[MichaelBaranows]

The only problem I see with using a H or Y valve is if you blow a rupture disk. It doesn't happen very often but that is still something that can happen.

 

[DennisS]

The only problem I see with using a H or Y valve is if you blow a rupture disk. It doesn't happen very often but that is still something that can happen.

On the other hand, it's not uncommon for people to run out of air

 

[beanojones]

The only problem I see with using a H or Y valve is if you blow a rupture disk. It doesn't happen very often but that is still something that can happen.

Does Rupture disk equal Burst disk?

 

[MichaelBaranows]

yes, rupture/burst disk

 

[ianr33]

The only problem I see with using a H or Y valve is if you blow a rupture disk. It doesn't happen very often but that is still something that can happen.

Also the tank neck O ring. If that goes then you are SOL .

On the other hand, it's not uncommon for people to run out of air

If you are the type of diver that runs out of air then you have no right to be diving solo.