High pressure inverted bellows valve

An inverted bellows valve has a two-piece stem interconnecting the valve and actuator for reciprocating axial movement of the stem tip. Tapered surfaces are advantageously utilized between cooperating elements for self-centering the valve assembly. An annular gland disposed along the exterior of the...

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Bibliographische Detailangaben
Hauptverfasser: DANKO, OLIVER L, BORK, JR., CARL R, STEISS, WILLIAM C, LEVENGOOD, DONALD A
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:An inverted bellows valve has a two-piece stem interconnecting the valve and actuator for reciprocating axial movement of the stem tip. Tapered surfaces are advantageously utilized between cooperating elements for self-centering the valve assembly. An annular gland disposed along the exterior of the valve stem has concentric inner and outer O-rings which permit the stem to float and compensate for misalignment. A wobble collar is also disposed in abutting engagement with the stem to compensate for uneven spring forces which could otherwise cock the stem. The bellows subassembly is removable in one piece to facilitate maintenance and replacement.