This production has reasonable structure, reliable sealing, ecellent performance and beautiful appearance.
The butterfly valve clack and sealing surface of valve seat are made by resurtacing welding of iron- -based aloy or Sellite cobalt- -based lly, which is wear resistant, high temperature resistant and corrosion resistant, it also has long service life.
It adapts the structure of wedge elasticity shutter, and the rlling bearing is set by large---diameter, which has facile and easy and hoisting. The valve stem is treated by quenching and tempering, as well as surface nitridation, so it has good corrosion resistance and abrasion resistance.
It can take various standards of piping flange and flange sealing surface mode, in order to satisfy various engineers' requirement and users' demand. The valve body materials has complete varieties, which can be ftted reasonably according to actual operation mode and user's requirement, it is also suitable for various pressures, temperatures and medium operation modes.