Title:
SEALING DEVICE
Document Type and Number:
Japanese Patent JPS6040875
Kind Code:
A
Abstract:
A sealing assembly comprises three non-compressible and relatively movable members, the first and second members having a first elastomeric sealing element located between them, the second and third members having a second elastomeric element located between them to urge the second member away from the third member and towards the first member. Spaces are provided between the second and third members and are occupied by an elastomeric spring biassed to urge the second member away from the first member and a metallic spring biassed to urge the second member towards the first member. The force exerted by the elastomeric spring is greater than and opposite to that exerted by the metallic spring. The sealing assembly is fire safe and particularly suitable for use in a ball valve.
Inventors:
DEIBITSUTO ARAN BURUTSUKUSU
Application Number:
JP14527984A
Publication Date:
March 04, 1985
Filing Date:
July 14, 1984
Export Citation:
Assignee:
BRITISH PETROLEUM CO
International Classes:
F16K5/06; F16K15/04; (IPC1-7): F16K15/04
Attorney, Agent or Firm:
Haruo Hamada
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