Metal seal valve eccentric metal seal structure, the seal can be divided into: metal-to-metal sealing
exchangeable metal seals to metal sealing, stainless steel and graphite composite plate seals,
metal seals. Hard seal butterfly valve drive form in addition to the electric manual, worm gear
lever transmission, pneumatic. The class of the valve in the pipeline should generally be mounted
horizontally.
Hard seal ball valve butterfly plate installed in the direction of the diameter of the pipe. Within
the cylindrical passage of the hard sealing ball valve, the disc-shaped butterfly plate is rotated
around the axis of the rotation angle is between 0 ° to 90 ° to 90 ° rotation, the valve is open
all license status.
New high-life stainless steel butterfly valve characteristics and butterfly valve problem in the process of
Hard seal ball hard sealing butterfly as a used to implement the parts of the piping system off and
flow control, in many fields of petroleum, chemical, metallurgy, hydropower to be very widely
used. The sealing butterfly valve technology known form of the use of the seal structure sealing
material such as rubber, PTFE. Due to the limitations of the structural characteristics suited to
high temperature, high pressure and corrosion resistance, abrasion resistance and other industries.
The existing advanced butterfly valve triple eccentric metal hard seal butterfly valve and valve
seat for Siamese components seat sealing surface layer welding temperature, corrosion resistant
alloy materials. Multilayer soft stacked ring fixed in the valve plate, compared to of this butterfly
traditional butterfly valve with high temperature, easy operation, open and close without friction,
closed with the transmission of the torque increases to compensate for the seal, improved
butterfly valve sealing performance and durability advantages.
