Max depth for unbalanced regs???

[Splitlip]

I understand what and how, I was wondering which one the OP is concerned about specifically.

N

Got it.

 

[leapfrog]

As far as I know, all regs sold for rec diving are prepared for breathing with a range of 8 to 12 ATM.... of course they need servicing....am I missing something here? Ooops....

 

[wedivebc]

I'm sure it will vary across models and divers.

When my wife's Sherwood Blizzard dry bleed plugged rendering it unbalanced she knew something was wrong at about 90 feet.

Pete

The feature you are referring to is depth compensating which keeps increasing the IP in relation to ambient pressure at depth.
A balanced reg is one that maintains a constant IP regardless of tank pressure. I believe almost all regs are depth compensated these days but not all are balanced.
I doubt the OP understands the difference since balance is not a function of depth and an unbalanced reg would perform just as well at depth. You would be hard pressed to find a reg that wasn't depth compensated.

 

[spectrum]

The feature you are referring to is depth compensating which keeps increasing the IP in relation to ambient pressure at depth.
A balanced reg is one that maintains a constant IP regardless of tank pressure. I believe almost all regs are depth compensated these days but not all are balanced.
I doubt the OP understands the difference since balance is not a function of depth and an unbalanced reg would perform just as well at depth. You would be hard pressed to find a reg that wasn't depth compensated.

Yup, my error..... Post 4 clarified with an edit.

pete

 

[divenutny]

Maybe this will help. I dove to 120 ft. My main tank had a balanced reg, my pony had an unbalanced Mk5/R190. I swapped regulators trying to notice any difference in how they breathed, I couldn't notice any difference. Both tanks were relatively full. Maybe if I got the tanks under 500 lbs, I might have noticed a difference. Not very scientific, proved to me unbalanced regs are fine.

Tom

 

[Nemrod]

An unbalanced reg becomes harder to breath as depth increases or tank pressure decreases. It is more a function of the tank pressure as I don't think we could could dive traditionaly deep enough to render the reg unbreathable.

A blanced reg delivers the same ip regardless of depth or tank pressure.Then they shut off

I used unbalanced regs alot in the 70's and 80's. They started pulling hard and we knew it was time to surface. As we surfaced we were able to breath.

Actually IP increases as tank pressure drops therefore the unbalanced regulator will become easier to breath.

N

 

[Couv]

Unbalanced regulators:

Diaphragm 1st stage-IP increases as tank pressure drops. (none made anymore that I know of)

Piston1st stage-IP decreases as tank pressure drops.

c

 

[Daveo957]

the r-190 is still made today

 

[Splitlip]

i'm an old scubapro guy. the mk 2 is a piston

 

[Couv]

the r-190 is still made today

True, but it is a second stage and receives IP pressure, does not deliver it.

c