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Insufficient Pressure From Scuba Tank

Discussion in 'Anything Airgun Related' started by Big Al, Feb 5, 2020.

  1. Big Al

    Big Al Newbie

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    Greetings! I have a BSA R10 SE Th in .177 and a 5 litre 300 bar tank, both of which I bought new a couple of months ago. I put PTFE tape on the tank-to-hose and hose-to adaptor connections, and with the air bleed valve closed, I'm not hearing any leakage.

    However, the rifle fills up to 200 bar and stays there, no matter if I open the regulator fully. Yet the rifle full pressure is 232 bar.

    Can anyone advise what I may be doing wrong?
     
  2. That hurts

    That hurts Barely Active

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    Your tank needs refilling ! Most people with R10s only fill to about 200 bar :up:
     
    Popgun, clickkid and Marky-Boy like this.
  3. Simok

    Simok Engaging Member

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    Get a blanking plug to test the tanks just to confirm those are all good re pressure. Otherwise the rifle gauge may be stuck is my guess, others will be along shortly with more advice.
     
  4. Tim_B

    Tim_B Pro Poster

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    ^^^^^this
     
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  5. Marky-Boy

    Marky-Boy Just The One + 1

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    Welcome
     
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  6. bhodge

    bhodge Posting Addict

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    This.....
     
  7. Wewekokowe

    Wewekokowe Busy Member

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    Probably the dive centre filled the tank to 220bar. The good thing is you can’t overfill like this much lol

    get a compressor
     
  8. jesim1

    jesim1 Kit bitch to the Stars

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    It's amazing how many time this has turned out to be the tanks pressure and nothing is wrong at all, the only way to actually know is test it as above - just make sure you have a 300bar valve and whip on your cylinder to take the full pressure as there are quite a few about with the cheaper 232bar valves even though it's a 300bar cylinder - but if your tank is only at 200bar then it's not an issue ;)
     
  9. DJP

    DJP Busy Member

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    That^^.
     
  10. pbrown

    pbrown Super Moderator Staff Member Mod/Admin

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    Using decent fittings and nothing tightened more than hand tight/small nip, never had to use PTFE tape.
     
  11. hamza

    hamza breaking strain of a kit kat

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    This.
    In fact it’s best not to use any as you don’t want bits of it working it’s way into the gun.
     
    metalman likes this.
  12. That hurts

    That hurts Barely Active

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    About as helpful as a wet fart in a lift as usual :facepalm:
     
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  13. MikaMutt

    MikaMutt Engaging Member

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    If your only getting 200bar in the rifle, there's only 200bar in the tank.
    The pressure in both has equalised because you've used all the available air.

    It's not 300 bar til the tank is empty.When the pressure in your tank gets to 232 bar, your rifle gets lower pressure fills.
     
  14. Regal Man

    Regal Man Keyboard Hero

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    I have a blanking plug , to test the pressure in the dive, bottle. If your local to Cambridgeshire, I'm happy to help out.
     
  15. HW100Tuning

    HW100Tuning Big Poster

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    Your gun will only fill to the pressure you have in your scuba tank.
     
  16. SteveO

    SteveO Top Poster

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    You noticed too!

    Thought it was just my nose that was playing up! :D
     
  17. tombillings916

    tombillings916 Donator

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    ^^^^^ Now, now! :D
     
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  18. That hurts

    That hurts Barely Active

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    Nowt wrong with your olfactory senses me old mate ;)
     
  19. SteveO

    SteveO Top Poster

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    Thank goodness for that, I thought I'd dropped a kid off at the pool only to find it was closed for the day. :D
     
    That hurts likes this.
  20. Big Al

    Big Al Newbie

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    Thanks for all the advice, guys. I assumed the tank was full because I bought it from the gun shop. I'll see what happens if I get a full fill on it.
     

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