Title:
The Trunnion type ball value for high pressures, and a hydrogen station
Document Type and Number:
Japanese Patent JP6072763
Kind Code:
B2
Abstract:
A trunnion ball valve for high pressure and a hydrogen station are provided, which achieves low torque during operation, and whose durability is improved to maintain sealing ability for a long period of time. In a trunnion ball valve including a ball provided inside a body main unit in a freely rotatable manner; and a seal mechanism provided on positions on both sides of the ball so as to be in seal contact with the ball, the seal mechanism including: a seat retainer having a sealing surface that is to be in seal contact with a ball surface of the ball; a spring member provided for applying elastic force on the sealing surface side; and a sealing member provided on an outer surface of the seat retainer, at least both of the sealing surface and the ball surface has a coating layer of diamond-like carbon provided thereon, so as to exhibit sliding ability and sealing performance.
Inventors:
Watanabe
Tetsuya Watanabe
Tetsuya Watanabe
Application Number:
JP2014502361A
Publication Date:
February 01, 2017
Filing Date:
February 28, 2013
Export Citation:
Assignee:
KITZ CORPORATION
International Classes:
F16K5/06
Domestic Patent References:
| JP2012013141A | ||||
| JP2004076884A | ||||
| JP8178091A | ||||
| JP2286973A | ||||
| JP2011001598A | ||||
| JP7501127A | ||||
| JP8261338A |
Foreign References:
| US20100200791 |
Attorney, Agent or Firm:
Tetsuo Kobayashi