Emerson Process Management (tianjin) Valves Co., Ltd

Emerson Process Management (tianjin) Valve Co., Ltd.

Emerson Process Management Valve Co., Ltd.

Zhimin Sun

Zhengyu Chen

Chun Gao

Qiyong Zhou

Control valves and cages that are adapted to reduce flashing and cavitation. A cage for use with a control valve having an inlet, an outlet, and defining a flow passage between the inlet and the outlet. The cage includes a generally cylindrical body and having a central bore, an upper portion, and a lower portion and an inner wall, an outer wall, and an intermediate wall disposed between the inner wall and the outer wall. The inner wall includes an inlet opening and the outer wall including an outlet opening. The inner wall, the outer wall, and the intermediate wall cooperate to define a portion of the flow passage that extends from the inlet opening, through the cage along the inner wall, along the intermediate wall, past a terminal portion of the intermediate wall, along the outer wall, to the outlet opening.

Control valves and cages that are adapted to reduce flashing and cavitation

A flow control valve includes an inlet, an outlet, and defines a fluid flow path. A valve seat is disposed within a valve body, and a valve plug in the valve body is surrounded by a cage. An exterior surface of the valve plug includes a plurality of notch sets, each notch set spaced apart from an adjacent notch set along the longitudinal axis, and the cage is disposed within the valve body and arranged to retain the valve seat, with an interior of the cage including a plurality of annular recesses. The annular recesses are spaced apart along the longitudinal axis, and the cage includes a plurality of apertures forming a portion of the fluid flow path. The notch sets and the recesses are arranged to form a plurality of turns in the fluid flow path when the valve plug is shifted toward the open position.

Valve trim assembly and flow control valve including the valve trim assembly

A valve trim apparatus comprises a valve seat () and a closure member () to operatively engage the valve seat (). One of the closure member () and the valve seat () includes a plurality of annular ribs (), and at least one of the valve seat () and the closure member () defines at least one groove () to be positioned between at least two of the annular ribs () to receive material from a sealing surface () between the closure member () and the valve seat () when the closure member () is sealingly engaged with the valve seat ().

Growing community of inventors

Tianjin, China

Zhimin Sun