1. Wear resistance: Since the valve core of the hard-sealed ball valve is spray-welded with alloy steel, and the sealing ring is welded with alloy steel, the hard-sealed ball valve will not wear too much during switching (the hardness coefficient is 65-70).
2. The sealing performance is good; because the sealing of the hard-sealed ball valve is artificially ground, until the valve core and the sealing ring are completely consistent. So his sealing performance is reliable.
3. The switch is light; since the bottom of the sealing ring of the hard-sealed ball valve uses a spring to tightly connect the sealing ring with the valve core, when the external force exceeds the preload of the spring, the switch is very light.
4. Long service life: It has been widely used in petroleum, chemical industry, power generation, papermaking, atomic energy, aviation, rocket and other departments, as well as people's daily life.
