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| Dimensions | DN50-DN300 |
|---|---|
| Working pressure | 21 Bar |
| Body Material | Ductile ironv |
| Certificates | UL , FM |
The supervised butterfly valve is used to cut off the fire extinguishing line, but the position switch on it informs the fire panel whether the valve is open or closed.
This control is required because a valve that remains closed after maintenance can completely disable the system — the switch immediately detects this situation.
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