Title:
【発明の名称】プラグバルブ
Document Type and Number:
Japanese Patent JP2721894
Kind Code:
B2
Abstract:
A plug valve and a sealing assembly for a plug valve. A plug valve having a plug closure member for sealing off the open end of a conduit and thereby preventing flow of a first fluid through the conduit, the plug closure member connected to a hollow stem tube, a channel for the flow of a second fluid, (a lift medium), extending through the hollow stem tube and plug closure member, the plug closure member and stem movable in a guide tube toward and away from the open end of the conduit, the plug closure member seatable in the open end of the conduit, and a sealing assembly disposed between the stem tube and guide tube for preventing the flow of fluid, fluidized catalysts, or purge medium downward past the sealing assembly and for preventing the flow of lift medium or feedstock upward past the sealing assembly. A spacer for a purge channel is provided for even distribution of a purge medium.
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Inventors:
MARIASU ROBAATO JUNIRU
Application Number:
JP20395488A
Publication Date:
March 04, 1998
Filing Date:
August 18, 1988
Export Citation:
Assignee:
TORAITEN CORP
International Classes:
B01J8/00; B01J8/18; B01J8/24; F16J15/24; F16K41/00; F16K41/04; (IPC1-7): F16K41/04; F16J15/24
Domestic Patent References:
| JP54162229A |
Other References:
【文献】米国特許2682277(US,A)
【文献】米国特許2668755(US,A)
【文献】米国特許843230(US,A)
【文献】米国特許2668755(US,A)
【文献】米国特許843230(US,A)
Attorney, Agent or Firm:
Yoshiyuki Osuge