(1) Automatic pressure relief function: When the pressure of the stagnation medium in the cavity of the valve abnormally rises above the preload force of the spring, the valve seat backs off the sphere to achieve the effect of automatic pressure relief, and the valve seat is automatically reset after the pressure is released.
(2) Drainage pipeline: Drainage holes are provided on the upper and lower sides of the valve body, which can check whether the valve seat is leaking. When the valve is fully open or fully closed during work, the pressure in the middle cavity is removed and the packing can be replaced directly; Retentate in the cavity, reducing the pollution of the valve to the medium. Auxiliary seal setting system (customers need to specify when ordering)
(3) Labor-saving operation: The ball is supported by the upper and lower bearings, which reduces friction and eliminates excessive torque caused by the huge sealing load caused by the inlet pressure pushing the ball and the seal seat.
(4) Available sealing performance: PTFE unisex material sealing ring is embedded in the stainless steel valve seat, and the spring end of the metal valve seat is provided with a spring to ensure sufficient pre-tightening force of the sealing ring. When the sealing surface is worn during use, the valve acts as a spring. The lower valve continues to ensure good sealing performance.
(5) This valve is designed with an auxiliary valve seat emergency sealing system. Once the seal is damaged or cannot be sealed due to an emergency situation, the sealing surface can be repaired by injecting the corresponding sealant into the sealing surface through the auxiliary sealing system to achieve emergency. seal. When the conveyed medium is dirty or contains a small amount of particles, in order to protect the sealing surface and ensure that a usable seal is achieved, this device can also be injected with the corresponding cleaning agent or lubricant to clean the sealing surface.
(6) It is widely used for cutting off or circulating the pipeline medium of food, medicine, petroleum, chemical industry, natural gas, steel, environmental protection, papermaking and so on. This device can also be injected with the appropriate cleaning agent or lubricant to clean the sealing surface.
(7) Fire protection structure: In order to prevent the PTFE seal ring from being burned due to sudden heat or fire, a large leak occurs, and to promote the fire, a fireproof seal ring is set between the ball and the valve seat. When the seal ring is burned out, Under the action of the spring force, the valve seat sealing ring is quickly pushed onto the sphere to form a metal-to-metal seal, which plays a certain degree of sealing effect. [The above content is organized and released for you by the electric actuator ]
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