le structure,and operate a small torque, 90 ° turn to open quickly.?
3, the flow characteristics of linear trend, adjusting performance.?
4, the use of spherical butterfly plate cylindrical shape, to improve the sealing performance and extended service life of valves, pressure head stock with more than 50,000 remain zero leakage.?
5, seals can be replaced, and sealed to achieve reliable two-way seal.?
6, the valve connecting flange can be designed and connected to th