Tightness in gasketed flanged unions

In this article, ESA member Francisco Montero looks at the background and challenges in gasketed flanged unions.

ISO 15848, TA-Luft and a new five-valve manifold

TA-Luft is well-known in the German and European processing industries as the guarantee for high quality stem sealings. But what guarantee do customers get from TA-Luft compliant Industrial Valves and

DBB vs. DIB

Jeff Partridge explains why double block and bleed is often misunderstood, and also suggests that sometimes double isolation and bleed might be a better alternative.

Assessing fugitive emissions performance in valves and packing

This paper describes a test procedure for valve emissions and presents results of tests on typical refinery valves.

Tightening of the standards

Fred Turco (Turco Valve Supply) discusses how standards relating to for example fugitive emissions are becoming more and more important.