On Tue, 6 Feb 2018 19:41:32 -0000, "Brian Gaff"
wrote:

One out of 2 possibly!
Brian

Probably!

But thanks to the data it seems that 20bar is a reachable test
pressure. This gives me a very wide margin of safety.

Methinks that there might be laws about modification of the end use of
LPG cylinders. If there isn't there should be:-)

I should have a gauge knocking around at the workplace, the only minor
problem is a 20 bar + water pump.

As no life form apart from myself and the weeds are going to be
present when the contraption goes into service, Ones concience is
clear [ish].

AB