Graphite/metal valve seal assembly for high temperature control valves

A sliding stem control valve (10) includes a valve body (12), a seat ring (22) located within the valve body and a valve plug (20) slidably mounted within the valve body, the valve plug and the valve seat cooperating to control fluid flow through the control valve. A seal assembly (30) is located be...

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Bibliographische Detailangaben
1. Verfasser: Grabau, Ted Dennis
Format: Patent
Sprache:eng
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Zusammenfassung:A sliding stem control valve (10) includes a valve body (12), a seat ring (22) located within the valve body and a valve plug (20) slidably mounted within the valve body, the valve plug and the valve seat cooperating to control fluid flow through the control valve. A seal assembly (30) is located between the valve plug and the valve seat, the seal assembly including a metal/graphite seal ring (34) located between a first backup ring (60) and a second backup ring (62). A biasing element (64) is located adjacent the second backup ring and a retainer ring (70) is located adjacent the biasing element to maintain the biasing element adjacent the second backup ring.