1)The sealing performance is better than wedge gate valve, such as the sealing surface tilt Angle and seat coordination is not very accurate, still has a good sealing performance.
2)After the sealing surface of the gate is worn, the metal pad at the bottom of the spherical top center can be used by changing to a thicker one. Generally, it is not necessary to surface-weld and grind the sealing surface, which is difficult to achieve with single gate and elastic gate.
3)More parts than other types of gate valves.
4)In addition to suitable for steam, oil and other media, but also suitable for frequent switching parts and sealing surface wear of the media, should not be used for easy coking media.