New EC nitrox regulation

[Simon A]

Originally Posted by jonny

With regard to the process, I dont think that an anual cleaning is unreasonable for commercially used O2 clean cylinders.

You do realise this is purely a dive industry regulation? In the UK HSE merely recommend that the cylinder is O2 cleaned when the valve is removed for testing (every 2.5 years), or if you susspect it's been contaminated.
Simon A

[nickb]

Originally Posted by Dominic

If it's true that a 25 DIN can be fitted into a 26 valve, I can't see how it can be considered a safety measure - more of an accident waiting to happen..

But the DIN thread we all know and love isn't M25 is it. Surely that's the thread on the valve that screws into the cylinders.

The thread on the regulator is smaller is it not?

[wreckweasel]

Actually, I tihnk the standard din thread is G5/8

[nigelH]

Originally Posted by jonny

You have lost me there all cylinders have threads

Yeah?

HTH

[gibbon]

Originally Posted by nigelH

Yeah?

HTH

Well i can see two on the valve.. and presume there is one on the cylinder to match

[yellowduke]

Saying adaptors can't be used is daft. The shop will have to use an adaptor on their fill whips anyway to fit the new valve. As I understand it membrane systems don't expose the cylinder to 100% O2 at any time so no need for a different valve there at all is there.

EU = Interfering tossers

Jim

[scubacoach]

The problem with using the membrane system is that there is a possibility of contamination of the cylinder, valve, etc when the filler station do not keep the unit clean as there is no 100% clean O2 being used. The cylinder owner takes his cylinder to the coast where the ds uses partial pressure filling adds the O2 and hey presto a nice little fire.