Valves - Fail-Closed (FC)
A control valve which should go to closed position on control signal failure should be labeled
- FC - Fail-Closed
The control signal may be pneumatic, hydraulic or electric.
Related Topics
• Control Valve Sizing
Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators, positioners and more.
Related Documents
Valves - Fail-Last (FL)
A control valve that should stay put if control signal or air fails.
Valves - Fail-Open (FO)
A control valve that goes to open position if control signal or air fails.
Valves - Normally Closed (NC)
Valves and the term Normally Closed.
Valves - Normally Open (NO)
Valves and the term Normally Open.