1. The valve adopts double-eccentric sealingstructure, valve seat and disc almost have no wear, has sealing function of gettingtighter and tighter when closed.
2. Sealing ring adoptsstainless steel, which has the advantages of metal hard seal and elastic seal.It has excellent sealing performance under low temperature and high temperature,corrosion resistance, long service life.
3, Body sealing surface use stainlesssteel or cemented carbide, which is wear resistance, long service life.
4. Large size butterfly boardadopts truss structure of high strength, large flow area and low flowresistance.
5. The valve has bi-directionsealing function. It can be installed in any direction without the limitationof medium flow and space position.
6. The drive device can beinstalled in multiple positions (rotation of 90 °or 180 °) for easy use by theuser.
Flanged metal or rubber butterfly valves are widely used in drinkingwater, thermal pipelines, boiler auxiliary systems, petrochemical andmetallurgical industries to cut off and regulate various non-corrosive andcorrosive medium.
The manual butterfly valve is used in dust-bearing cold wind or hot airpipelines of chemical engineering, building materials, power station, glass andother industries as control device toregulate flow rate or cut off gas medium. It is installed in pipelineswith medium temperature 300 and nominalpressure of 0.1-4 Mpa to connect, open orclose or adjust medium. The valve should be generally installed horizontally inthe pipelines.