Jump to content

Best courier for sending air cylinders?


Ian.S
 Share

Recommended Posts

Do bear in mind that you may need to be a little deceptive if using a courier. A lot of them don't like pressurised cylinders (which, I assume, is why the reply above had it emptied and not looking like an air cylinder.)

But, having it totally empty runs the risk of getting moist air in there, which can cause rusting.

Link to comment
Share on other sites

Do bear in mind that you may need to be a little deceptive if using a courier. A lot of them don't like pressurised cylinders (which, I assume, is why the reply above had it emptied and not looking like an air cylinder.)

But, having it totally empty runs the risk of getting moist air in there, which can cause rusting.

 

Rusting in air bottles often happens with Divers as get moisture in it

 

But Draining it of Air and Turning it off and Shipping it - Should not result in any rusting

 

To Ship with Air would risk Accident and get All further bottles banned -

I used to buy in Faber Bottles from MDE

Was Well packed and never had a issue -

 

As Bottle is Steel and heavy - packing needs to be robust to stop it braking out of Carton -

 

BOB/R

Link to comment
Share on other sites

 

Rusting in air bottles often happens with Divers as get moisture in it

 

 

Can you explain how this happens ?? :unsure:

 

As I understand it,

dive centres fill tanks through several stages of moisture removal traps, filters,driers in order to ensure both clean and dry air.

Air in dive cylinders is compressed to many times the atmospheric pressure so if there was to be a leak between cylinder and atmosphere the air is going to be coming out under pressure rather than damp atmospheric pressure pushing it's way in.

 

If a cylinder is stored charged air can't be drawn inwards surely as the outside pressureis far less ?

Link to comment
Share on other sites

I think he might mean moisture gets around the vital parts ie: the head of the tank causing corrosion. Meaning that whilst it is still 'safe' to use in the sense it will work it falls below the legal safety requirement and so has to be got rid of. Hence why your tank has to be inspected every two and half years unless it's a land tank, like my bisley 12 litre, then it's every five years.

Link to comment
Share on other sites

I bought a 10 lit 232 bar bottle last year very cheap out of test but the bottle looked mint no rust.

 

I took it for test and it failed. When i went to pick it up they said by law you cannot have it back.

 

They took the valve out to show me the inside of the bottle and it was rotten has a pear. Really heavily rusted inside.

 

I have no idea how moisture gets in the only thing i can think of is a poor filling compressor.

 

But that doesn`t make sense has the bottle was ex fire service and they fill there own bottles.

 

Has luck would have it the dive shop did me a very good deal on a second hand 12 lit 300 bar bottle tested for £50. Happy days.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...