New standards and updated editions of existing standards continue to be introduced, ever
increasing the valve types and valve testing requirements to meet fugitive emissions.
The most widely accepted standards organizations for fugitive emissions initiatives with
regard to valves are API and ISO with extended requirements from end users (user specific
testing requirements) and TA Luft specifications.
Globally, API and ISO either independent or congruent are considered minimum
compliance standards.
End user specifications and TA Luft may be required but in many cases to a lesser extent.
There have been and continue to be compliance and non-compliance nuances to not only