Although there are many types of trunnion mounted ball valves produced by trunnion ball valve manufacturers, they all have the following ball valve characteristics:
- 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.
- 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 is worn out during use, the valve will continue to ensure good sealing performance under the action of spring.
- 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.
- Automatic pressure relief function: When the medium pressure in the stagnant chamber of the trunnion mounted ball valve constructionincreases 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.
- 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 ball valve suppliers. For more information of product features, please visit our website at http://www.zecovalve.com/.
As a industrial Valve factory, ZECO always adhere to exceed customer expectations, to provide customers with more value-added
services and products as the ultimate goal.
ZECO valve group co ltd was established in year 1991. We are located in Shanghai, Yancheng and Wenzhou with total building area 102000㎡. Till now, we have expanded into a group with 8 holding companies(including 5 production bases), sales offices and sales agents. Mainly manufacturing forged ball valve, casting ball valve, wedge gate valve, through conduit gate valve, globe valve, dual plate check valve, swing check valve & forged steel valve.
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