Ventilation butterfly valve

source：Xiamen, rhett fluid control co., LTD The information has been viewed： 3906 Time：2013-07-03 20:12:27


Ventilation butterfly valve is a kind of non - sealed butterfly valve, body using the same materials and processed into the sealing ring, the pneumatic or electric drive, drive the valve shaft through the drive, the drive pin so that the disc with the valve shaft in the range of 90 DEG rotation, so as to achieve the opening and closing or regulation. It is widely used in metallurgy, electric power, building materials, mining and other industrial pipelines, on medium gas control or regulation.
Product features:
■ manufacture of welded steel plate, with the structure size of short, small volume, light weight, convenient installation
■ the driving torque is small, flexible opening and closing, convenient operation
■ butterfly plate and the body of the expansion gap is big, can effectively prevent due to thermal expansion and contraction caused by the blocking phenomenon
■ structure type can be divided into: sealed, non-sealed type (≤ 1.5% leakage)
■ optional drive mode: manual, worm gear, electric, pneumatic
■ optional standard: GB, HG, SH, API, ANSI, ASME, AWWA, ISO, DIN, BS, JPI, JIS etc.
Technical parameters:
■ nominal size: DN100 ~ D4000
■ nominal pressure: 0.05 ~ 0.6MPa
■ design standards: GB/T 12238
■ suitable medium: gas, dust gas, flue gas
■ end connection: customer requirements.
■ test and inspection: GB/T13927
The material of main parts:
■ body: carbon steel, stainless steel
■ valve plate: carbon steel, stainless steel
■ stem: stainless steel, dual phase steel
■ ring: carbon steel, stainless steel