The GEMÜ 415 soft-seated, centric butterfly valve made of stainless steel is pneumatically operated via a space-saving piston actuator. The "Normally Closed", "Normally Open" and "Double Acting" control functions are available. A low-cost rack and pinion actuator can also be fitted. With its rounded and polished disc edges, the butterfly valve is optimized for frequent cycle duties. The surface of the butterfly valve can be further finished.