CN3
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The butterfly control valve CN3, of rotation flap type “Disc or fishtail” with WAFFER connections to be interlayer between flanges.
It can have a free shaft or normally with pneumatic actuator AN656. This valve is usually used in services with low pressure differences.
It is used as a regulating or blocking valve with a wide variety of fluids.
The type of watertightness in this valve is Class VI (standard FCI 70-2)