It is applicable to urban gas pipelines, large heating equipment pipelines, and various fluid, gas and heat supply, fuel supply pipelines of steel plants.

The valve body is formed from steel plates and assembled and welded as a whole to avoid any possible leakage of media. The spring loaded valve seat combination structure is adopted, which has strong adaptability to pressure and temperature changes to ensure the close contact between the seal ring and the ball. On the premise of ensuring the seal, the valve can be opened and closed flexibly and operated easily. The ball and the valve stem are processed by precision machine tools, reducing the friction coefficient between the contact surfaces, The sealing performance and operating torque of the valve are further improved.