1. Labor saving operation: the ball is supported by upper and lower bearings to reduce friction and eliminate excessive torque caused by the huge sealing load formed by the ball and seal seat driven by the inlet pressure.

2. Reliable sealing performance: PTFE single material seal ring is embedded in the stainless steel valve seat. A spring is set at the end of the metal valve seat to ensure sufficient preload of the seal ring. When the sealing surface of the valve is worn during use, the valve continues to ensure good sealing performance under the action of the spring.

3. Fireproof structure. The fire resistance test meets the requirements of APl6FA and APl607 standards.

4. Automatic pressure relief function: when the pressure of the stagnant medium in the valve chamber rises abnormally and exceeds the pre force of the spring, the valve seat moves backward and leaves the ball, achieving the effect of automatic pressure relief, and the valve seat automatically recovers after pressure relief

5. Discharge pipeline: the upper and lower parts of the valve body are provided with drain holes to check whether the valve seat leaks. When the valve is fully open or closed during operation, the pressure in the middle chamber can be removed and the packing can be replaced directly; It can discharge the residues in the middle chamber to reduce the pollution of the medium to the valve.