SPG for 300bar Service

[newman_diver]

Hey All,

Looking for recommendations of SPGs that handle 300bar/4350psi well. I know most are rated to that pressure but the current one I am seeing has an issue with leaking. Looking for something people have run on 300bar without issue. Thanks!

 

[Couv]

Leaking from where? The high pressure fitting or from the case itself?

If the leak is coming from the hose/gauge interface, it could be a simple matter of replacing the seals with new and perhaps higher durometer o-rings.

 

[newman_diver]

Leaking from where? The high pressure fitting or from the case itself?

Bubbling out the pinholes in the hose

 

[Couv]

Bubbling out the pinholes in the hose

During the entire dive or just at the beginning?

 

[newman_diver]

During the entire dive or just at the beginning?

Before even getting in the water. This is across multiple regs with the same SPG.

 

[Couv]

Yes, but does the hose continue to weep tiny bubbles throughout the dive or does the bubbling stop at some point shortly after being pressurized? See this:

High pressure hose seeps and sweats.

I was servicing my regulators yesterday and noticed something that I'm not sure about. I had them under pressure in a tank of water and was checking seals, pop off pressures, inhalation pressures, etc and noticed very tiny little bubbles on my high pressure hose...the one going to my gauges...

scubaboard.com

At any rate. If the hose is defective, you only need to replace the hose-not the entire SPG and hose assembly.

 

[newman_diver]

Yes, but does the hose continue to weep tiny bubbles throughout the dive or does the bubbling stop at some point shortly after being pressurized? See this:

High pressure hose seeps and sweats.

I was servicing my regulators yesterday and noticed something that I'm not sure about. I had them under pressure in a tank of water and was checking seals, pop off pressures, inhalation pressures, etc and noticed very tiny little bubbles on my high pressure hose...the one going to my gauges...

scubaboard.com

At any rate. If the hose is defective, you only need to replace the hose-not the entire SPG and hose assembly.

This is a large scale issue, multiple SPGs and hoses, all the same make and model. Some of them new, others were used on a 200bar regulator prior to being put in service on a 300bar system.

I am looking to find a dependable SPG/Hose combo that's been used successfully on a 300bar regulator. Might have to ping in another forum.

 

[Rayk]

As far as I know brass and glass SPGs made by same manufacturer in Italy. Only difference is faceplate.

The ones that 360 or 400 bar capable might be the choice.

SPG TECH GAUGE Large & small sizes - Submersible pressure-gauge | Termo Industria

is one of the manufactured and sold by Termo Industria. Visit our site for the full catalog.

www.termoindustria.it

 

[Couv]

This is a large scale issue, multiple SPGs and hoses, all the same make and model. Some of them new, others were used on a 200bar regulator prior to being put in service on a 300bar system.

I am looking to find a dependable SPG/Hose combo that's been used successfully on a 300bar regulator. Might have to ping in another forum.

OK....I understand now. I think you have the correct forum.

How about posting the manufacture of gauges and hoses you've has issues with?

 

[newman_diver]

OK....I understand now. I think you have the correct forum.

How about posting the manufacture of gauges and hoses you've has issues with?

Scubapro