Pneumatic Butterfly Valve with Rigid Seal, also known as the flip plate valve, is a simple structure of the regulating valve, but also can be used for the low pressure pipeline medium switch control. The hard sealed butterfly valve mainly acts as a cutting and throttle on the pipe. Butterfly valve opening and closing part 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 adjustment. Hard sealed butterfly valve is suitable for the furnace, gas, steam, natural gas, city gas, cold and hot air, chemical smelting engineering and power generation environmental protection system, for regulating and truncating the flow of the medium.
1, hard sealing butterfly valve adopts three eccentric hard sealing structure, valve seat and butterfly plate almost no wear, with the more closed the more tight sealing function.
2, the sealing ring is made of stainless steel, with the dual advantages of the metal hard sealing and elastic sealing, both in the case of low temperature and high temperature, have excellent sealing performance, with corrosion resistance, long service life and other characteristics.
3. Butterfly plate sealing surface is overwelded cobalt-based carbide, with wear resistance and long service life.
4. Large size butterfly plate adopts quilted frame structure, with high strength, large overflow area and small flow resistance.
5, according to the user needs, the hard sealing butterfly valve can be designed to have a two-way sealing function, the installation is not limited by the flow direction of the media, also is not affected by the space location, can be installed in any direction.
6. The drive device can be installed at multiple stations (rotating 90° or 180°) for users to use.
Design and manufacture: API 609, MSS SP-67, GB / T 12238, JB / T 8527
Structure length: ASME B16.10, GB / T 12221
Connected flange: ASME B16.5, GB / T 9112~9124, HG / T 20592, HG / T 20615, JB / T 79
Inspection and test: API 598, GB / T 26480
