1.独特的阀座三重密封结构

　　1. Unique triple sealing structure of valve seat

　　为使阀门更有效地密封，该结构采用三重密封结构，即三角形橡胶密封和塑料插件软密封，加上金属硬密封，如果软密封出现问题，金属密封也能起到作用。同时金属硬密封还是防火结构的设计，即当软密封遭到火灾燃烧时，金属硬密封能够密封。

　　What? In order to make the valve more effectively sealed, this structure adopts a triple sealing structure, namely triangular rubber seal and plastic plug-in soft seal, plus metal hard seal. If there is a problem with the soft seal, the metal seal can also play a role. At the same time, the metal hard seal is also designed as a fire-resistant structure, which means that when the soft seal is burned by a fire, the metal hard seal can seal.

　　2.全焊接无外漏结构

　　2. Fully welded and leak free structure

　　阀体连接和阀杆连接部位全部为焊接方式，大大降低了介质外漏的可能性。同时也大大提高了阀门应对管道振动和各种自然灾害的能力。

　　The valve body connection and valve stem connection are all welded, greatly reducing the possibility of medium leakage. At the same time, it greatly improves the valve's ability to respond to pipeline vibration and various natural disasters.

　　3.双放散阀结构

　　3. Dual relief valve structure

　　阀门的上下游端均设计安装了放散阀，可对管道中的余气进行排放。

　　Both the upstream and downstream ends of the valve are designed and equipped with relief valves, which can discharge residual gas in the pipeline.

　　4.加长袖管结构

　　4. Extended sleeve structure

　　阀门的上下游端均焊接有与用户管道相同尺寸的钢管，方便用户现场的安装使用。避免现场焊接安装过程中由于温度过高对阀门软密封零件的伤害。

　　The upstream and downstream ends of the valve are welded with steel pipes of the same size as the user's pipeline, which facilitates on-site installation and use by the user. Avoid damage to valve soft seal components due to high temperature during on-site welding and installation.

　　5.阀杆防飞结构

　　5. Anti flying structure of valve stem

　　当阀门内腔压力上升时，阀体中腔的压力可能将阀杆推出。为防止这种情况发生，在阀杆处设置有四开环，防止阀杆飞出。这样，对于更换填料较为方便和。

　　When the pressure inside the valve chamber rises, the pressure in the valve body chamber may push the valve stem out. To prevent this situation from happening, a four ring valve is installed at the valve stem to prevent the valve stem from flying out. In this way, it is more convenient and safe to replace the packing.

　　6.阀杆双重密封结构

　　6. Dual sealing structure of valve stem

　　?阀杆设计有橡胶和石墨两重4道密封圈，常温时橡胶密封圈和石墨密封圈都起到密封作用。当发生火灾时，石墨密封圈起到密封作用，确保阀杆部位在任何工况条件下都不会产生外漏。

　　What? The valve stem is designed with four sealing rings made of both rubber and graphite. At room temperature, both the rubber sealing ring and graphite sealing ring play a sealing role. When a fire occurs, the graphite sealing ring plays a sealing role, ensuring that the valve stem will not leak out under any working conditions.

　　7.防静电设计

　　7. Anti static design

　　当操作阀门时，由于球体和阀座之间的摩擦，会产生静电并积聚在球体上。为防止产生静电火花，特在阀门上设置防静电装置，将开关过程产生的静电导出。该设计在阀门使用在燃点较低的汽油、天然气、丙烷等时将能够有效地防止事故的发生。

　　When operating the valve, static electricity is generated and accumulates on the ball due to friction between the ball and the valve seat. To prevent the generation of static sparks, an anti-static device is installed on the valve to dissipate the static electricity generated during the switching process. This design can effectively prevent accidents when the valve is used in low ignition gasoline, natural gas, propane, etc.

　　8.防火结构

　　8. Fireproof structure

　　当意外发生火灾时，阀座、填料等非金属材料将被烧坏，大量泄漏的介质可能更加促进火势。阀门的防火结构可阻止介质大量泄漏。在火灾后，各泄漏部位（球与阀体、阀杆与阀体、中法兰）设计成金属接触，满足防火要求。如图，一旦阀座被烧损，阀座在压力作用下将直接和球体的金属面接触，从而阻止介质大量从烧损的阀座处泄漏。其设计、制造均遵循API 607和API 6FA 规范要求。

　　When an unexpected fire occurs, non-metallic materials such as valve seats and packing will be burned out, and a large amount of leaked medium may further promote the fire. The fireproof structure of the valve can prevent a large amount of medium leakage. After a fire, the leakage parts (ball and valve body, valve stem and valve body, middle flange) are designed to be in metal contact to meet fire protection requirements. As shown in the figure, once the valve seat is burned, it will directly contact the metal surface of the sphere under pressure, thereby preventing a large amount of medium from leaking from the burned valve seat. Its design and manufacturing comply with the requirements of API 607 and API 6FA specifications.

　　9.双阻塞与排放（DBB）

　　9. Double Blocking and Emissions (DBB)

　　固定球阀采用弹簧预紧浮动阀座，无论阀门处于全开或全关状态时，上下游侧的阀座使流体阻断，阀体中腔滞留物通过排放阀排泄。

　　The fixed ball valve adopts a spring preloaded floating valve seat. Regardless of whether the valve is fully open or fully closed, the upstream and downstream valve seats block the fluid, and the trapped material in the valve body chamber is discharged through the discharge valve.

　　10.自动泄压功能

　　10. Automatic pressure relief function

　　阀门体腔停留介质温度升高而引起异常升压时，不需通过阀，而仅靠阀座功能就可自动泄压，这对保证阀门在输送液体介质时的性非常重要。

　　When the temperature of the medium inside the valve cavity rises and causes abnormal pressure rise, there is no need to use a safety valve. The valve seat function alone can automatically release pressure, which is very important for ensuring the safety of the valve when transporting liquid medium.

　　11.用户选用BIB-2结构设计

　　11. Users choose BIB-2 structural design

　　对于气体介质的管道，建议客户选用DIB-2结构的阀门，良工阀门的全焊接球阀产品能同时确保上下游阀座能同时密封，中腔压力由于外力升高后，压力同样能从上游端阀座自动泄压，确保阀门能使用。

　　For gas medium pipelines, it is recommended that customers choose valves with DIB-2 structure. Lianggong Valve's fully welded ball valve products can ensure that both upstream and downstream valve seats can be sealed simultaneously. When the pressure in the middle chamber increases due to external forces, the pressure can also be automatically released from the upstream valve seat, ensuring the safe use of the valve.

　　12.锁定装置

　　12. Locking device

　　为防止阀门开关受到误动作以及不可预知的线路振动而产生的不应有的开关动作，在阀门的全开和全关位置设有锁定孔，可用挂锁锁定阀门。特别是阀门安装在野外或在可燃性介质的石油类和化学药品的生产线，该锁定装置就会体现出其独特的优越性。

　　To prevent valve switching from being affected by misoperation and unforeseeable line vibrations, locking holes are provided at the fully open and fully closed positions of the valve, and the valve can be locked with a padlock. Especially when valves are installed in the field or on production lines for flammable media such as petroleum and chemical products, this locking device will demonstrate its unique superiority.

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