FCT Concentric Butterfly Valve is designed and developed to use in process engineering and industrial application where only a small leakage (Class IV) is allowed in the closed position or where an elevated temperature or an arduous service means a soft seal is not practical. FCT 'Step-Vane' and 'Swing-Through-Vane' Butterfly Control Valves have been designed and developed for applications where leakage in the closed position is not the problem, but the control of the amount of liquid or gas through the pipe line is paramount. These valves provide excellent throttling performance. These Series Butterfly Control Valves (with Anti-Cavitation/Low Noise Trim) have been designed and developed by FCT to use in process engineering and industrial applications where the effect of cavitation (due to high liquid pressure drop) cannot be eliminated/handled by Concentric Butterfly Control Valves.
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