As a new type of ball valve device widely used in recent years, threaded ball valve is widely loved and concerned by consumers. The origin of the name of threaded ball valve is mainly attributed to the threaded connection mode when it is connected with the pipeline. In terms of specific materials, it is also divided into carbon steel, stainless steel, low-temperature steel and ball milled cast iron. Then, compared with other ball valves, what are the characteristics of threaded ball valves?

1、螺纹球阀在结构上一般分为整体式，两段式和三段式，各个结构布置合理，造型美观，符合大多数消费者的审美观，其中两片式，三片式螺纹球阀连接方式还有采用了对焊和承插焊方式，并且带有标准的支架平台和锁定装置，驱动方式可分为手动，电动和气动三种不同模式。

1. Threaded ball valves are generally divided into integral type, two-stage type and three-stage type in structure. Each structure is reasonably arranged and has a beautiful appearance, which is in line with the aesthetics of most consumers. Among them, two-piece and three-piece threaded ball valves are connected by butt welding and socket welding, and are equipped with international standard support platform and locking device. The driving mode can be divided into three different modes: manual, electric and pneumatic.

2、阀座都是来用了弹性密封结构，启动与关闭轻松自如，阀杆部分应用的是倒密封的下装式结构，这样就避免了阀腔内异常时阀杆被冲出。这样的设计结构下，螺纹球阀内的流体阻力变小，即便介质通过也不会引起阀门密封的侵蚀。

2. The elastic sealing structure is used for the valve seat, which makes it easy to start and close. The valve rod part adopts the bottom mounted structure of inverted sealing, so as to avoid the valve rod being rushed out when the valve cavity is abnormal. Under such a design structure, the fluid resistance in the threaded ball valve becomes smaller, and even if the medium passes through, it will not cause the erosion of the valve seal.

3、从全开到全闭只需要旋转半周即可，简单操作还便于远距离的控制，活动的密封圈便于拆卸与安装，让维修与维护变得更方便和快捷。由于它结构简单，重量轻，更能减轻管道的承压。

3. From fully open to fully closed, it only needs to rotate for half a cycle. The simple operation is also convenient for remote control. The movable sealing ring is convenient for disassembly and installation, making repair and maintenance more convenient and fast. Because of its simple structure and light weight, it can reduce the pressure of the pipeline.

据实验数据研究证明，螺纹球阀可用在1-4mpa以及工作温度在-29~180摄氏度的环境下更好的的截断和接通管道中的介质，而且介质不单单包括水，燃气，蒸汽还包括油品，硝酸和醋酸等化学物质。

According to the experimental data research, the threaded ball valve can better cut off and connect the medium in the pipeline under the environment of 1-4mpa and working temperature of - 29 ~ 180 ℃, and the medium includes not only water, gas and steam, but also chemical substances such as oil, nitric acid and acetic acid.

法兰球阀在使用过程中是需要维护保养的，而且这个保养是日常工作，每天都要做的。只有维护保养好了才能够延长法兰球阀的使用寿命，让它充分发挥优势为我们服务。那么，法兰球阀要如何维护保养呢?

Flange ball valve needs maintenance in the process of use, and this maintenance is a daily work and should be done every day. Only after maintenance can we prolong the service life of flange ball valve and make it give full play to its advantages to serve us. So, how to maintain the flange ball valve?

1、一定要检查清楚阀门开关指示牌和阀门编号牌，确保标识清晰。如果标识有受损或者脱落的，要及时补贴上去。

1. Be sure to check the valve switch indicator and valve number plate to ensure that the identification is clear. If the logo is damaged or falls off, it shall be subsidized in time.

2、要检查法兰球阀各支架和连接处的螺栓，看看各部位是否连接良好，如果有松动的情况，要重新紧固好。

2. Check the bolts at the supports and connections of the flange ball valve to see whether all parts are well connected. If there is looseness, retighten it.

3、检查法兰球阀关键部位的状况，包括填料压盖、加油孔、加油孔螺帽、丝堵、伸缩节、阀盖与阀体连接等各部位，看看这些零部件是否有异常情况。确保所有零部件都能够正常工作。

3. Check the condition of key parts of flange ball valve, including packing gland, oil filling hole, oil filling hole nut, screw plug, expansion joint, connection between valve cover and valve body, and see whether these parts are abnormal. Ensure that all parts are working properly.

4、除了以上这些日常检查工作之外，每年还要做一次大检修。详细检查设备各方面的情况，这样能够及时排除故障，避免因故障而带来大的损失。

4. In addition to the above routine inspection, a major overhaul shall be carried out every year. Check all aspects of the equipment in detail, so as to eliminate the fault in time and avoid large losses caused by the fault.

像法兰球阀泄漏就是常见的问题，当法兰球阀出现故障，那么要紧急进行处理，但是注意要找维修人员来处理。一般如果是从大厂家购买的法兰球阀，那么厂家是可以提供售后服务的，所以有问题的话，联系厂家这样就能够你的烦恼了。

For example, the leakage of flange ball valve is a common problem. When the flange ball valve fails, it should be handled urgently, but pay attention to find maintenance personnel to deal with it. Generally, if the flange ball valve is purchased from a large manufacturer, the manufacturer can provide after-sales service, so if there is a problem, contact the manufacturer, so you can solve your trouble.