Bellows sealed plug valve
Patent
·
OSTI ID:6217008
This patent describes a bellows sealed plug valve. It includes a valve body having an inlet passage and an outlet passage, a valve chamber between the inlet and outlet passages. A valve plug has substantially the same shape as the valve chamber and is rotatably disposed therein. A shaft is movable linearly in response to a signal from a valve actuator. A bellows is sealingly disposed between the valve chamber and the valve actuator and means are located between the bellows and the valve plug for converting linear movement of the shaft connected to the valve actuator to rotational movement of the plug. Various means are disclosed including helical thread mechanism, clevis mechanism and rack and pinion mechanism, all for converting linear motion to rotational motion.
- Assignee:
- Dept. of Energy, Washington, DC (USA)
- Patent Number(s):
- A; US 4955581
- Application Number:
- PPN: US s 7-414359
- OSTI ID:
- 6217008
- Country of Publication:
- United States
- Language:
- English
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