Divers bottle question

[ashf9999]

Royal Mail regs seem to have got a bit more lenient lately. I had a 3L cylinder posted to me I bought off another forum 2 or 3 weeks back. They seem more concerned about gasses now, rather than the cylinder itself. The PO counter were quite happy when they were told it was an empty cylinder and the valve was open, and they were happy with that. The other cylinder he sold also got to its destination. The second half of the penultimate line seems to count. I assume a buddy bottle would need the valve unscrewed as it otherwise couldn’t be left open.

Gases, including flammable, non-flammable, toxic and compressed gases (including new, used and empty gas cylinders, ethane, butane, refills for lighters, fire extinguishers and scuba tanks, life jackets, nitrogen dioxide and carbon dioxide canisters including culinary foaming devices & soda stream)
All flammable compressed gases are prohibited* e.g. blowlamps; butane; lighters and refills containing flammable liquid or gas; ethane; gas cylinders for camping stoves; hydrogen; methane and propane.
All toxic compressed gases are prohibited* e.g. chlorine; fluorine etc.
All non-flammable compressed gases are prohibited* e.g. air bags; scuba tanks, carbon dioxide; fire extinguishers; neon and nitrogen.
Empty cylinders that are sealed so that residual gas under pressure are prohibited, only those cylinders which are open to the atmosphere for inspection are permitted

*includes new, used and empty gas cylinders

[where's it gone]

New 7L is about £250.
I have bought out of test bottles with no worries as long as they have some air in them.

The air inside would be 'dry air' so as not to compromise the integrity of the structural nature of the bottle by corrosion cause by moist air. Leaving the valve open allows moist air to enter.

[Jesim1]

You can post. Must be empty and have valve fully open.

You can only officially post them if you have a company account that allows this, otherwise they are prohibited, and if "found", may well be confiscated as per their terms - but it's your call

[ashf9999]

You can only officially post them if you have a company account that allows this, otherwise they are prohibited, and if "found", may well be confiscated as per their terms - but it's your call

Nope. See personal customer Ts&Cs, under gases for charging/dive bottles. As said, open valve seemed to satisfy them. The Guns for Sporting Use section clarifies the position that pcp airguns/buddy bottles must be depressurised.

https://help.royalmail.com/personal/...mer-guidelines

[angrybear]

Yep, it would appear that RM now allow empty, open, vented, scuba cylinders, But PF still list them as prohibited.