Fisher Jeon Gas Equipment (chengdu) Co., Ltd.

Emerson Process Management Regulator Technologies, Inc.

Fisher Jeon Gas Equipment Co., Ltd.

Yawei Xiao

Guolei Fan

Yanwei Lei

Justin Lane Masias

Biao Zhou

Jing Zhang

David O Plummer

Xiaojuan Qin

Ping Huo

Dan Liu

Justin L Masias

A fluid regulator includes an actuator assembly disposed in a valve body. A sleeve includes a cylindrical wall, a first plate, and a second plate. Each of the first plate and the second plate is disposed in a cavity of the sleeve. A stem extends through the sleeve and is axially aligned with a longitudinal axis of the body, and includes a passage extending partially through the stem. The actuator assembly includes first and second pistons. First, second, third, and fourth chambers are separately disposed between the sleeve, the first or second plate, or the first or second piston. The first and third chambers are in fluid communication, and the second and fourth chambers are in fluid communication via the passage of the stem. The actuator assembly actuates a control element in response to a fluid pressure receivable in the first, second, third, and/or fourth chambers.

Regulator

Balance structure for a regulator

Circumferentially-sectioned valve cages are disclosed. An example apparatus comprises a plurality of cage sections collectively configured to be removably coupled together to form a valve cage having a circumference and a plurality of joints. The joints correspond in number to the cage sections and are spaced apart from one another about the circumference. Respective ones of the joints are defined by neighboring ones of the cage sections.

Circumferentially-sectioned valve cages

Growing community of inventors

Chengdu, China

Yawei Xiao