Butterfly valve for fire protection applications

The KSB Group is launching a new butterfly valve for  fire protection applications in June 2016. The new BOAX-B FM valves, are fitted with a specially designed gearbox. Suitable for an operating pressure of up to 16 bar, the valves are available from DN 40 to DN 300. 
KSB’s design and the liner quality used ensure that the liner does not move, also under pressure, thus providing permanent and lasting tightness. The spherically machined valve disc and the liner, which is moulded accordingly, make for a perfectly tight shut-off at the stem passages. This design principle prevents the stem from coming into contact with the fluid. The elastomer liners also provide sealing at the flanged line connections, eliminating the need for additional gaskets. A yellow flag of 100 x 100 mm, which is also visible from a distance, indicates if the butterfly valve is open or closed. 
The new BOAX-B FM valves satisfy the safety requirements of Annex 1 of the European Pressure Equipment Directive 97/23/EC. The flange connections comply with the EN, ISO and ASME standards.
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