Finally had to take my air cylinder for refilling. 7L, 300barg. As it was out of test a few years ago knew it required a full hydro test. However got a bit of a shock.
First I was informed that the pillar valve was a dive cylinder valve (I bought the complete setup from our sponsors several years ago. I assumed, incorrectly it would seem that the pillar valve was the correct "only to be used out of water" valve. The correct valve has the pressure gauge indicating the pressure in the tank being charged attached to the pillar & not on the connected filling line as mine is).
He added that it did not matter as the current ruling is that ALL cylinders must be hydro tested every 18 MONTHS. No more is it 5 years for an airgun only cylinder. Come August 2017 this may be reduced to hydro testing every 12 MONTHS. Again for ALL air cylinders. There is of course an interim dry internal check which must be carried out mid cycle. Cost for the hydro test is £35. To collect in a week, or so !!.
Anyone heard similar information.

Al