EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC.
发明人:
Fan Guolei,Zhou Biao,Liu Nian Chun,Zhang Jing,He Yang,Nguyen Tung K.
申请号：
US201514625006
公开号：
US9678516(B2)
申请日:
2015.02.18
申请国别(地区):
美国
年份:
2017
代理人:
Marshall, Gerstein & Borun LLP
摘要：
A balanced pressure regulator includes a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway. A valve seat is disposed within the fluid passageway. A balanced plug assembly is disposed within the fluid passageway, the balanced plug assembly including a valve plug that cooperates with the valve seat to selectively open or close the fluid passageway, a retainer operatively connecting the valve plug to a valve stem, a diaphragm separating a chamber from the fluid passageway, a central balancing passage that fluidly connects the fluid passageway with the chamber, and a peripheral balancing passage that fluidly connects the fluid passageway with the chamber, the peripheral balancing passage being located between the retainer and the valve plug.
