The elastic seat sealed plug valve makes improvements on traditional plug valve and segment valve, provides reliable applications and offers availability and long service life for various media, high-speed, corrosive fluid and fluid with impurity. The advanced functions and structural design will be comprehended in the following performances and features.

(1)The elastic seat sealed structure: the sealing structure of elastic cock and corrosion-resistant seat ensures the reliable sealing and zero leakage of the valve, and overcomes the error of easily being leaked occurred in the metal seal of traditional plug valve and segment valve.

(2)Eccentric sealing design: The operating force is only acted on the very short travel of contact or disengage from the sealing face of the valve, moreover, is quickly reduced along the lowering of sealing pressure, there is no wearing on the sealing face and automatic compensation is offered. It solves the problems that traditional plug valve and ball valve occur serious wearing on the sealing face under large continuous operating force because the full travel of sealing face is forcibly squeezed.