KULEVENTILTETNING MED DYNAMISK C-TETNING OG STATISK C-TETNING

KULEVENTILTETNING MED DYNAMISK C-TETNING OG STATISK C-TETNING

A seal assembly is provided for a rotary ball valve having a top -mounted bonnet (14), thereby allowing the seal assembly to be installed and removed without removing the valve from the pipeline. In an embodiment, the seal assembly may include a seal ring (44) disposed within the valve interior and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Dalluge, Paul R, Davies Jr, Lonnie Oscar, Fitzgerald, William V
Format: Patent
Sprache:nor
Schlagworte:
ACTUATING-FLOATS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Beschreibung
Zusammenfassung:A seal assembly is provided for a rotary ball valve having a top -mounted bonnet (14), thereby allowing the seal assembly to be installed and removed without removing the valve from the pipeline. In an embodiment, the seal assembly may include a seal ring (44) disposed within the valve interior and biased toward the ball element of the valve. A seal carrier (46) may be disposed between the seal ring and the valve body, and the seal carrier may be removably secured to the valve body by a plurality of bolts disposed in the valve interior. A primairy leak path (50) may exists between the seal ring and the seal carrier and a secondary leak path (52) may exists between the seal carrier and the valve body. A first and second auxiliary seal (82,56) may prevent fluid flow through the primary and secondary leak path, respectively.