The hard seal ball valve includes a ball arranged in the valve body, the upper end of the product is provided with a valve stem, the product's valve stem is arranged upward through the fixed arranged in the upper side of the valve body in the loose heat pipe, the upper side of the loose heat pipe is provided with a driving mechanism to drive the valve stem up and down, the product is arranged between the valve cover and the ball with an elastic hard seal device, This ensures that the ball valve can maintain good sealing performance when the temperature is increased or decreased. At the same time, it also has the advantages of long service life and zero leakage, and can withstand ultra-high temperature and ultra-low temperature, so it is widely used in ultra-high temperature, ultra-low temperature, flammable, explosive and toxic conditions and other harsh environment.
The hard sealed ball valve includes a valve body, a metal valve seat installed in the valve body, and a spherical valve core sealed with the valve seat. The valve seat of the product is a trumpet shape with a large elastic end and a small end. The channel in the valve body of the product is small relative to the cavity, and a step structure is formed between the channel and the cavity. The large mouth end of the product's horn is close to the concave corner of the step structure and is directly sealed with the valve body. The small mouth end of the product's horn can be directly sealed with the valve core. The hard-sealed ball valve of this product is provided with an elastic metal seat that is directly sealed with the valve body, and uses the elasticity of the seat to seal with the spool, simplifying the structure, and can be adapted to high temperature or even ultra-high temperature operating environment.
