Results 1 to 14 of 14

Thread: Walther Co2 cylinder filling

  1. #1
    Join Date
    Jun 2013
    Location
    cardiff
    Posts
    24

    Walther Co2 cylinder filling

    looking for info on Walther CP2 Co2 cylinder filling, how much co2 do I need to add to an empty cylinder in order to fill. I understand they are measured by weight.

  2. #2
    Join Date
    Jan 2009
    Location
    christchurch
    Posts
    7,130
    Weights for full and empty should be marked on the cylinder?

  3. #3
    Join Date
    Apr 2012
    Location
    Christchurch
    Posts
    4,829
    Weighing after filling is to check how much you have managed to transfer. If you somehow fill too much liquid CO2 which occasionally happens, your pistol will not fire and you will have to vent a bit of gas. Normally you get a vent screw cap with the pistol. I used to fill my FWB Model 2 from a fire extinguisher as shown below. Now fill my Crosman 111.

    Baz

    https://i.imgur.com/1ADwNgG.jpg

    https://i.imgur.com/xTP194I.jpg
    BE AN INDEPENDENT THINKER, DON'T FOLLOW THE CROWD

  4. #4
    Join Date
    Jun 2013
    Location
    cardiff
    Posts
    24
    this is what is on my cylinder
    0.053kg kohlend10x10 Tarao.353kg

  5. #5
    Join Date
    Mar 2001
    Location
    near rotterdam,netherlands
    Posts
    3,537
    kohlend =co2
    tara = empty weight iirc
    So I think 53 gram
    correct me if Im wrong
    ATB,
    yana

  6. #6
    Join Date
    Jun 2013
    Location
    cardiff
    Posts
    24
    Quote Originally Posted by hwtyger View Post
    kohlend =co2
    tara = empty weight iirc
    So I think 53 gram
    correct me if Im wrong
    Just weighed my empty cylinder and it reads 356g so do you think it should be filled with 53 gram of co2 making total 409g
    Last edited by Donross; 12-07-2018 at 09:33 AM. Reason: update

  7. #7
    Join Date
    Jan 2009
    Location
    christchurch
    Posts
    7,130
    I think that's right.
    But weight is just a check.
    There is no way you can squirt in 53 gm in a measured way.

    Fill it and it will stop filling when pressure equalizes.
    Hopefully it will work but if not check weight and vent as Baz says.

  8. #8
    Join Date
    Jun 2013
    Location
    cardiff
    Posts
    24
    Thank you folks, great group this is.

  9. #9
    Join Date
    Jun 2013
    Location
    cardiff
    Posts
    24
    Thanks for your help folks.

  10. #10
    Join Date
    Mar 2001
    Location
    near rotterdam,netherlands
    Posts
    3,537
    Quote Originally Posted by gingernut View Post
    I think that's right.
    But weight is just a check.
    There is no way you can squirt in 53 gm in a measured way.

    Fill it and it will stop filling when pressure equalizes.
    Hopefully it will work but if not check weight and vent as Baz says.
    I dont think it'll stop filling. CO2 doesnt fill by pressure it fills by weight.
    It starts filling from 1 cilinder to the other because of temperature difference. (because you had yr cilinder in the freezer).
    If there's a lot of temperature difference, it'll fill up fast(er). If there's too little difference, you wont get a complete fill.
    You can easily overfill bulk CO2. But it shouldnt break yr Orings like pcp does. It'll be loud and inconsistent.
    Just leave cilinder on few seconds with crane open. Than check weight.
    When there's 53 grams in it, or near that, yr done.
    ATB,
    yana

  11. #11
    Join Date
    Jun 2013
    Location
    cardiff
    Posts
    24
    Quote Originally Posted by hwtyger View Post
    I dont think it'll stop filling. CO2 doesnt fill by pressure it fills by weight.
    It starts filling from 1 cilinder to the other because of temperature difference. (because you had yr cilinder in the freezer).
    If there's a lot of temperature difference, it'll fill up fast(er). If there's too little difference, you wont get a complete fill.
    You can easily overfill bulk CO2. But it shouldnt break yr Orings like pcp does. It'll be loud and inconsistent.
    Just leave cilinder on few seconds with crane open. Than check weight.
    When there's 53 grams in it, or near that, yr done.
    Thanks I will give it a go.

  12. #12
    Join Date
    Dec 2012
    Location
    Newport, South Wales
    Posts
    848
    Did you ever work out how to correctly fill your CP2?
    I'm about to buy a CP3 and need some advice on filling with co2 from a fire extinguisher.

    Sorry to drag up an old post.

  13. #13
    Join Date
    Mar 2001
    Location
    near rotterdam,netherlands
    Posts
    3,537
    All info you need is in this post
    ATB,
    yana

  14. #14
    Join Date
    Oct 2006
    Location
    Scarborough, N Yorks
    Posts
    18,979
    Be careful. I once overfilled one of my Walther CP2 cylinders by only 2 or 3 grams, but didn't vent down to correct weight before it warmed up and it blew a seal.

    Vent down to correct weight immediately on filling.
    Walther CP-2 Match, FAS 604 & Tau 7 target pistols, Smith & Wesson 6" & 4" co2 pistol, Crosman 1377,
    Baikal IZH 53 pistol, Gamo CFX Royal,177, Umarex SA-10 CO2 pistol.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •