The TYCO Model BFV-300 Wafer Style Butterfly Valves are indicating type valves designed for use in fire protection systems where a visual indication of open valve condition is required.
They are used, for example, as system, sectional and pump water control valves, and are suitable for installation between ANSI Class 125/150 flanges as well as PN10/16 flanges without the need for flange gaskets.