300 bar SPG, maximum working pressure

Please register or login

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

Benefits of registering include

  • Ability to post and comment on topics and discussions.
  • A Free photo gallery to share your dive photos with the world.
  • You can make this box go away

Joining is quick and easy. Log in or Register now!

Mikkelse

Registered
Messages
11
Reaction score
3
Location
Copenhagen
# of dives
50 - 99
Looking to buy a new SPG and kind of like the simple 300 bar ones that have 0-200 bar in the top half. However, I just realised these have a "maximum working pressure" of 200 bar. Question is are these safe to use for normal rec diving where start pressure will usually be in the 190-220 bar range on a full tank?

Or do I need to get a 360 bar, 300 maximum working pressure one, which seems to be the norm, for that little more buffer?

Thanks!
 
working pressure is not the same as burst pressure. working pressure is the recommended range of use and generally lies in the middle of the sweep range of the gauge for accuracy purposes. beyond that until the burst pressure, the reading becomes less reliable. If you don't plan to exceed 232 bar, the standard spg should be fine.

it is also possible the disclaimer is there so a customer doesn't order a 300 bar spg to use with 300 bar tanks. In that case you would be much closer to the burst pressure and likely to undergo premature fatigue/failure.
 
https://www.shearwater.com/products/peregrine/

Back
Top Bottom