Hard seal butterfly valve, also called flap valve, is a simple structure of the regulating valve, but also can be used for low-pressure pipeline media switching control. Hard seal butterfly valve in the pipeline mainly plays the role of cutting off and throttling. Butterfly valve opening and closing parts is a disc-shaped butterfly plate, in the valve body around its own axis rotation, so as to achieve the purpose of opening and closing or regulation. Hard seal butterfly valve is suitable for furnace, gas, steam, natural gas, city gas, hot and cold air, chemical smelting engineering and power generation environmental protection system to transport a variety of corrosive, non-corrosive fluid media pipeline, used to regulate and cut off the flow of media.

1、Hard seal butterfly valve adopts three eccentric hard seal structure, the valve seat and the butterfly plate almost no wear and tear, with the more off the tighter the sealing function.

2, the sealing ring is made of stainless steel, with the double advantages of metal hard seal and elastic seal, no matter in the case of low temperature and high temperature, have excellent sealing performance, corrosion resistance, long service life and so on.

The sealing surface of the butterfly plate is made of surfaced cobalt-based hard alloy, which is resistant to abrasion and has a long service life.

4、Large size butterfly plate adopts quilted frame structure, high strength, large overflow area, small flow resistance.

5、According to the user's demand, the hard seal butterfly valve can be designed to have a two-way sealing function, and can be installed in any direction without the restriction of the medium flow direction or the influence of the space position.

6、The driving device can be installed in multiple positions (rotated 90° or 180°), which is convenient for users to use.