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Title:
SPHERICAL COCK
Document Type and Number:
Japanese Patent JPS6152471
Kind Code:
A
Abstract:
A ball valve has a movable upstream valve seat with a metal lip engageable with the valve ball under pressure generated by a bellows section or metal membrane connected between the movable valve seat and the housing. The force of fluid pressure against this moveable valve seat is relieved by operation of a bypass valve connecting opposite sides of this seat. The ball can also have a deformable metal lip.

Inventors:
ROJIE MARUTAN
ROORAN BIYUFUA
Application Number:
JP10417685A
Publication Date:
March 15, 1986
Filing Date:
May 17, 1985
Export Citation:
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Assignee:
VANATOME
International Classes:
F16K5/20; F16K39/06; (IPC1-7): F16K5/20
Domestic Patent References:
JPS52115432A1977-09-28
JPS5310136A1978-01-30
Attorney, Agent or Firm:
Shigeru Yagida



 
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