Title:
制御弁
Document Type and Number:
Japanese Patent JP5078893
Kind Code:
B2
Abstract:
A packing nut assembly for a control valve having a valve body and a valve stem includes a packing box arranged for operative coupling to the valve body and having a primary bore sized to receive the valve stem and first and second counterbores. The first counterbore is sized to receive valve packing and the second counterbore includes internal threads. A packing nut having a central bore is sized to receive the valve stem and includes a threaded outer surface positioned to engage the second counterbore of the packing box. The packing nut includes an adjustment surface positioned to face the first counterbore, and includes an adjustment head having a plurality of tool-receiving apertures sized to receive an adjustment tool.
Inventors:
Mark, Linden
David John, Coaster
Alberdin, Jason Jean
Kinser, Andrew
David John, Coaster
Alberdin, Jason Jean
Kinser, Andrew
Application Number:
JP2008526983A
Publication Date:
November 21, 2012
Filing Date:
August 04, 2006
Export Citation:
Assignee:
Fisher Controls International Limited Liability Company
International Classes:
F16K41/04; F16K1/00; F16K1/32; F16K31/126
Domestic Patent References:
| JP55090867U | ||||
| JP4505208A | ||||
| JP53060717A | ||||
| JP1116287U |
Foreign References:
| US3319647 | ||||
| US20040155217 | ||||
| GB413462A | ||||
| GB103795A | ||||
| US20030127619 | ||||
| US1585087 | ||||
| US6286810 |
Attorney, Agent or Firm:
Patent business corporation Yuko patent office