The TYCO Model BFV-N lug Style Butterfly Valves are indicating type valves designed for use in fire protection systems where a visual indication is required as to whether the valve is open or closed. They are used, for example, as system, sectional, and pump water control valves. They are suitable for installation between ANSI Class 125 or 150 flanges without the need for flange gaskets.
For applications requiring supervision of the open position of the valve, the Gear Operators for the Model BFV-N lug Style Butterfly Valves are provided with two sets of factory installed internal switches each having SPDT contacts. The supervisory switches transfer their electrical contacts when there is movement from the Valve’s normal open position during the first two revolutions of the handwheel.
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