What is Live-Loaded packing | What is Bellow Seal Valve | FUGITIVE EMISSIONS simplified скачать в хорошем качестве

What is Live-Loaded packing | What is Bellow Seal Valve | FUGITIVE EMISSIONS simplified

The most widely used packing material is Teflon (PTFE) and Graphite. As a rule of thumb, PTFE packing materials are suitable up to 200 °C And Graphite based packing material are suitable up to 600°C. However, refer individual material datasheet for detailed information. Fugitive emission requirements must also be checked, and the vendor must be consulted for special environmental protection packing sets. For example Kalrez Valve Stem Packing (KVSP), Live load packing, Enviro-Seal and Bellows seal have better sealing properties and are less prone to leakage. Live-Loaded packing is a methodology for maintaining steady pressure on a specific gland force that is caused by thermal cycling, pressure surges, packing relaxation, wear or extrusion. A Bellow Sealed Valve is a industrial process valve designed to eliminate valve leakage and are also known as "Zero Leak Valve" or "Emission Free Valve". The use of a bellows seal valve significantly reduces external leakage.