GYL-51300 uses the same partial spherical spool pneumatic O-type cut off the ball one corner 90 ° rotation class shut-off valve, close tight...

◆ GYR-51200 concentric partial spherical spool, spool has a V-shaped incision, with the seat relative rotation shear force, the fibrous materi...

◆ GYR-51100 eccentric part of the spherical valve core, it is in a straight-through valve body is equipped with a spherical spool, spool ro...