Fail Open (FO)

Related Topics

• Control Valves Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators and positioners

Related Documents

• Normally Closed (NC) The term Normally Closed
• Normally Open (NO) The term Normally Open
• Fail Closed (FC) A control valve which should go to closed position on control signal or air failure would be labeled FC
• Fail Last (FL) A control valve which should stay put on control signal or air failure would be labeled FL

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