2. Sealing ring adopts stainless steel, which has the advantages ofmetal hard seal and elastic seal. It has excellent sealing performance under lowtemperature and high temperature, corrosion resistance, long service life.
3, Body sealing surface use stainless steel or cemented carbide, whichis wear resistance, long service life.
4. Large size butterfly board adopts truss structure of highstrength, large flow area and low flow resistance.
5. The valve has bi-direction sealing function. It can be installedin any direction without the limitation of medium flowand space position.
6. The drive device can be installed in multiple positions (rotationof 90 Â°or 180 Â°) for easy use by the user.
Flanged metal or rubberbutterfly valves are widely used in drinking water, thermal pipelines, boilerauxiliary systems, petrochemical and metallurgical industries to cut off andregulate various non-corrosive and corrosive medium.
The manual butterfly valve isused in dust-bearing cold wind or hot air pipelines of chemical engineering,building materials, power station, glass and other industries as control device to regulate flow rate or cut off gasmedium.It is installed in pipelines with medium temperature â¤ 300â and nominalpressure of 0.1-4 Mpa to connect, open orclose or adjust medium. The valve should be generally installed horizontally inthe pipelines.