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https://www.zecovalve.com/characteristic-of-trunnion-mounted-ball-valve-construction-machinery.html

ZECO Vavle group, founded in 1991 located in Shanghai, Yancheng, Wenzhou with focus on manufacturing international standard valve, wedge grate valve, through conduit grate valve, floating ball valve and froged valve.ZECO has excellent product quality managing system, cretified by API 6D, CE/PED, IOS9001, IOS14001, IOS18001, FM, TS and approved by china valve supplier.

Although there are many types of trunnion mounted ball valves produced by trunnion ball valve supplier, they all have the following characteristics:

1. Its operation is labor-saving: the ball is supported by upper and lower bearings, which reduces friction. It eliminates the excessive torque caused by the enormous sealing load formed by the sphere and seal seat driven by the inlet pressure.

2. Reliable sealing performance: PTFE unisexual material seals are embedded in stainless steel seats with springs at the end of the metal seats to ensure sufficient preload of the seals. When the sealing surface of trunnion type ball valve characteristics is worn out during use, the valve will continue to ensure good sealing performance under the action of spring.

3. Fire-proof structure: In order to prevent the PTFE sealing ring from burning down due to sudden heat or fire, and to increase the fire potential, a fire-proof sealing ring is set between the sphere and the valve seat. When the sealing ring is burned down, under the action of spring force, the seat sealing ring is quickly pushed onto the sphere to form a metal and metal seal. It has a certain degree of sealing effect. The refractory test meets the requirements of APl6FA and APl607 standards.

4. Automatic pressure relief function: When the medium pressure in the stagnant chamber of the trunnion mounted ball valve construction increases abnormally beyond the pre-force of the spring, the seat retreats away from the ball to achieve the effect of automatic pressure relief, and the seat is automatically restored after pressure relief.

5. Drainage pipeline: Both upper and lower parts of the valve body are equipped with discharge L, which can check whether the valve seat leaks or not. In work, when the valve is fully open or closed, the pressure in the middle chamber can be discharged and the filler can be replaced directly. The residue in the middle chamber can be discharged to reduce the medium pollution to the trunnion mounted ball valves.

Zeco Value is one of the most professional trunnion mounted ball valve suppliers.