New Omega 75 CF Carbon Fiber Tank Question

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X-Hairs

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Sep 13, 2015
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Hi,

I just received my new Omega 75 cubic feet carbon fiber tank from AOA. Brought it to a scuba shop and had it filled (presumably) to 4500 psi. I filled my PCP once - all went well bringing the rifle to 3200 psi. Afterwards I was thinking about how I can determine my remaining pressure in the tank. The gauge reads ZERO until the line is pressurized when filling the rifle - but that wont exceed 3200 psi because I wont let it.

Can anyone tell me how do I determine my current tank pressure?

Thanks!
 
If the hose on the tank has a female foster fitting then the dead head that ztirffritz showed is what you need. If not then there may be a female one that will go on the male fitting on the tank. My Tiger Shark has a separate gauge for what's in the tank. I really like that feature. It saves air also. Every time you pressurize the dead head you waste air. Enjoy your new tank!
 
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You will need three adapters:
  1. Female Quick Disconnect (QD) to 1/8" BSPP
    This screws into the end of your fill line's 1/8" Female BSPP and converts it to a Female Quick Disconnect
    You can buy one from Airhog for $30, or Precision Airguns and Supply for $22, or Pyramyd Air for $20, or Straight Shooters for $25
  2. Male Foster to 1/8" Female BSPP
    Your FX probe screws into the 1/8" Female BSPP and the other end to your fill lines Female Quick Disconnect (QD)
    You can buy one from Airhog for $25, or Precision Airguns and Supply for $16, or Pyramyd Air for $9.95, or Straight Shooters for $25
  3. Deadhead:
    This plugs into the end of your fill line Female Quick Disconnect (QD)
    You can buy one from AirHog for $10.00 or Precision Airguns and Supply for $11.95
    [/LIST=1]

 
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The deadhead is a simple way to determine the pressure in your tank and it comes free with an Airhog tank (and it does not hurt your hose). The reason that Van Jacobi, previous owner, did not install a pressure gauges on the tank directly was for safety. Because it is fasten directly to the tank (before the shut-off valve), if you were to drop it and rupture the fitting to the gauge, you could not stop the air flow. There is no way to turn the air flow off once this happens. One of fritz's video shows how it becomes a missile somewhere on this forum. Van felt it was not worth the liability if this happened and someone got hurt. Some may say I am full of @#%% and they really like the second gauge, but for someone who has already ruined a gauge, I do not want to take that risk. If you have just one gauge it is fastened after the shut-off valve which in my humble opinion is much more safe. I would not pay $24 dollars for the plug either!
Just my 2 cents

Doc
 
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Hi X-hairs. Most likely the scuba shop only filled your tank to 4000 psi or so. I've taken my tank to 2 scuba shops and this was their max fill even though it was a 4500 compressor. I now take it to a paintball store. Some of the employees also just fill it to 4000 psi because like the scuba shop's, they don't know how to cascade the air or manually turn on the compressor. The owner and one certain employee are the only ones who fill my tank now all the way to 4500. Next time ask them or watch to see how much they filled it, and explain to them that once the pressure gets down to 3000 or so that the tank is useless and needs to be topped off again and that's why you need it filled to 4500.
 
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"X-Hairs"Hi,

I just received my new Omega 75 cubic feet carbon fiber tank from AOA. Brought it to a scuba shop and had it filled (presumably) to 4500 psi. I filled my PCP once - all went well bringing the rifle to 3200 psi. Afterwards I was thinking about how I can determine my remaining pressure in the tank. The gauge reads ZERO until the line is pressurized when filling the rifle - but that wont exceed 3200 psi because I wont let it.

Can anyone tell me how do I determine my current tank pressure?

Thanks!
Click to expand...
Hmmm my 100cuft from AoA came with a deadhead plug... 
 
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