Thanks for that feedback.
My decision is that the valve can not be used on Natural Gas infrastructure because it ahs not been approved under a "type testing" regime in Australia.
thread378-167629 I hadn't come across the WOG term before on valves here in Australia and saw a SATURN valve with 2000 wog on it today. Thanks to this forum and a very good link, I'm enlightened. But, if I read correctly, the wog term does not imply that the valve is approved for use with a...