Patent ID: 9394928
Filing Date: 2016-07-19
CPC Classification: F15B,F16K,Y10T

Claim Text:
1. A system, comprising: at least one valve device including a valve body and a valve element slidably disposed within a passageway formed in the valve body, wherein a first segment of the valve element and the valve body are arranged to define a working chamber to receive a working fluid at a first pressure, and the valve body and the valve element are arranged to define a control chamber to receive a control fluid at a second pressure, the valve element having a land; and an annular seal element disposed between the land and an inner surface, wherein the seal element and the land are together arranged to separate the working chamber and the control chamber and to move with axial movement of the valve element; and a pressure monitoring system fluidly coupled to the control chamber; and a controller in communication with the pressure monitoring system, configured to: