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Flange Butterfly Valve DN50-DN1200

Concentric type butterfly valves designed to comply with BS5155. Compatible with GB, 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 strength more highly and the seal more reliably for the seat. There is O-ring casted on the seal surface of the seat, negates need for flange gaskets. Available in size 2¡å to 48¡å. Available with handles, manual gear operators, and electric or pneumatic actuators

1. ApplicationThe butterfly valve is suitable for use in petroleum, chemical, food, medicine, paper making, water and electricity,
ship building, water supply and sewage, and some other pipe systems such as metallurgy and energy systems; a variety of corrosive, non - corrosive gas, liquid, semi-liquid and solid powder pipelines and container served as regulating and closure devices

2. Features
a. Structure length comply with international standard, facilitate international sales.b. Body lining of rubber vulcanization ensure a stable driving torque.c. Ends of Body Rubber vulcanization adopt water line to fulfill various forms of the flange sealing requirements.d. Apply for single standard valve installation.e. Clients can choose lever, worm gear, pneumatic apparatus, electronic apparatus or combination driving operation according to working requirements.f. Bolt fittings convenient in maintenancing and replacing.g. Simple structure, piping connect the stem and plate of valve, steadily positioning.h. The customs can independently choose the plate (electroplating, nylon plating coating, epoxy coating) according to requirements.i. The shaft seal can be use copper line and O-ring combined sealing, lower part of the stem adopt bearing structure under positioning.