1. The valve middle chamber adopts the pressure self tightening type sealing structure, and the sealing performance is good.

2. The sealing surface of disc and seat is made of cobalt-based cemented carbide overlaying welding, which is wear-resistant, high temperature-resistant, good abrasion resistance and long service life.

3. The stem is corrosion-resistant and nitriding. It has good corrosion resistance and scratch resistance.

4. Design of high temperature creep resistance.

5. The depth of the gland cover is reasonable, the filler is corrosion inhibitor, and the sealing is reliable.

6. The valve has an upper sealing structure to ensure that the valve stem will not leak when the valve is opened and running.

7. The valve drive mode includes manual, gear drive and electric drive, which can realize remote control and automation requirements.