Assures perfect alignment of disc and seat even at large flow velocities.
Assures perfect alignment of disc and seat even at large flow velocities.
即使在大流速下，也能够确保阀瓣和阀座的精确对准。
Assures perfect alignment of disc and seat even at large flow velocities.
即使在大流速下，也能够确保阀瓣和阀座的精确对准。