1.Labor-saving operation as the ball is supported by dual bearings to reduce friction;

2.PTFE unisexual material sealing ring is embedded in the stainless steel valve seat, and the end of the metal valve seat is equipped with a spring to ensure sufficient pre-tightening force of the sealing ring;

3.Fireproof sealing ring is set between the ball and the valve seat to form a metal-to-metal seal in case of fire according to AP16FA and API607 standards;

4.When the pressure of the stagnant medium in the valve cavity rises abnormally and exceeds the pre-load of the spring, the valve seat retreats away from the ball to achieve the effect of automatic pressure relief;

5.Drain holes are set up and down the valve body to check whether the valve seat is leaking.