Product name: Double Flanged Short Type Butterfly Valve (Series F401)Series F401 valves designed to coply with BS5155.
Compatible with DIN,BS and ANSI125/150 flanges.Face to face according to ISO 5752 basic series 13(short)DIN 3202 part 1 series F16.Characteristic of series F401 valve is to splice the rubber liner on the body,the trength more highly and the seal more reliably for te seat. There is 0-ring casted on the seal surface of the seat.netates need for flange gaskets. Avaliable in size 2" to 48".Avaliable with manual gear operators. and electric or pneumatic actuators.