SPG needle dip while purging xStream 2nd stage

[Corey Zhao]

Hello everyone,
I would like to ask if it is normal: My SPG needle dip significantly while I purge my xStream 2nd stage. I use a 11L AL tank, DIN connector, 150 Bar air left, purge on land, needle dip from 150 to 50 but back to 150 quickly. I know Poseidon Reg has very strong purge, but is my regulator works normally?
Sorry I am not a native English speaker

 

[RainPilot]

Not sure but that doesn't sound right. @tbone1004 dives xstream so maybe he can give some input.

Sounds like a valve isn't all the way open, does this happen on all tanks?

 

[Alastor]

Possibly check the filter at the inlet of the first stage - is it a DIN or INT ?

 

[dumpsterDiver]

I would plug a LP gauge into the inflator and see how that responds. If the reg seems OK, there may be a tiny bit of corrosion somewhere between the regulator and the pressure guage, there are some very small orifices that could be partially blocked.

 

[redacted]

If the filter is OK, I would be suspicious of abnormally large HP orifices in the 1st stage and HP hose.

 

[Corey Zhao]

Possibly check the filter at the inlet of the first stage - is it a DIN or INT ?

Hi Alastor, there are DIN tank and DIN 1st stage

 

[Corey Zhao]

OK problem solved! The tank was not fully opened...
Thank you all~!

 

[RainPilot]

OK problem solved! The tank was not fully opened...
Thank you all~!

Good stuff. Thats why its advised to watch the SPG when breathing regs before diving, to avoid exactly this issue. Enjoy the regs!

 

[tbone1004]

@RainPilot sorry for delay, I do not dive xStreams, but the first suggestion was to make sure the valve was all the way open because that is not normal behavior for any regulator

 

[RainPilot]

Aha. I know you dive Poseidon I must have just assumed xstream. You dive Jetstream?