Abstract: A piloted-safety valve in which a shaft is guided in a guide sleeve in the alve body and both the shaft and the guide sleeve have collars to which ends of an extensible metal jacket are sealingly anchored. The jacket, e.g. a bellows, is in a compressed state when the valve is closed.
Type:
Grant
Filed:
August 19, 1988
Date of Patent:
October 10, 1989
Assignee:
Societe d'Exploitation de Brevets Pour l'Industrie et la Marine Sebim