Title:
スライドステム制御バルブ組立体のための液圧アクチュエータ装置
Document Type and Number:
Japanese Patent JP2014501369
Kind Code:
A
Abstract:
A hydraulic actuating device for a sliding stem control valve assembly is mounted between a control valve and an actuator housing. The hydraulic actuating device is connected to one of a control valve stem, an actuator stem, and a stem connector and the hydraulic actuating device moves either the control valve stem, the actuator stem, or the stem connector in response to varying hydraulic pressure within the hydraulic actuating device. The hydraulic actuating device may be used to override an actuator of the sliding stem valve during emergency operations, or to provide a backup actuator in the case of a primary actuator malfunction.
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Inventors:
Ri Nannan
Gao, Chun
Gao, Chun
Application Number:
JP2013546548A
Publication Date:
January 20, 2014
Filing Date:
December 28, 2010
Export Citation:
Assignee:
Emerson Process Management (Tianjin) Valve Co., Ltd.
International Classes:
F16K1/32; F16K1/00; F16K31/126; F16K37/00
Domestic Patent References:
| JPS6052481U | 1985-04-12 |
Foreign References:
| US5484133A | 1996-01-16 |
Attorney, Agent or Firm:
Nobuyuki Okajima