Lianggong valve is a control switch used to manage the flow of fluid in pipelines. There are many ways in which media can change, and the types vary depending on the type. Shanghai Lianggong valves can be said to be a large category, with many types available. It can be used to control the flow of various fluids, such as water, steam, oil, gas, mud, various corrosive media, liquid metals, and radioactive fluids. The working pressure of Lianggong valve can change from 0.0013MPa to ultra-high pressure of 1000MPa, and the working temperature can change from ultra-low temperature of c-270 ℃ to high temperature of 1430 ℃

安装上海良工阀门前，应仔细检查所用上海良工阀门的型号、规格是否与设计一致；根据上海良工阀门的型号和出厂说明书，检查上海良工阀门是否可以在要求的条件下使用；上海良工阀门吊装时，绳索应绑在阀体与阀盖的法兰连接处，不要绑在手轮或阀杆上，以免损坏阀杆和手轮；上海良工阀门安装在水平管道上时，阀杆应垂直向上，阀杆不得向下安装；安装上海良工阀门时，不得采用生拉硬拽的强制对口连接方式，以免因受力不均而造成损坏；

Before installing the Shanghai Lianggong valve, carefully check whether the model and specifications of the Shanghai Lianggong valve used are consistent with the design; According to the model and factory manual of Shanghai Lianggong valve, check whether the Shanghai Lianggong valve can be used under the required conditions; When lifting valves from Shanghai Lianggong, the rope should be tied to the flange connection between the valve body and valve cover, not to the handwheel or valve stem to avoid damage to the valve stem and handwheel; When Shanghai Lianggong valve is installed on a horizontal pipeline, the valve stem should be vertically upwards, and the valve stem should not be installed downwards; When installing the Shanghai Lianggong valve, it is not allowed to use the forced connection method of pulling and pulling to avoid damage caused by uneven force;

明杆闸阀不宜安装在地下潮湿的地方，以免阀杆生锈。管道内的灰尘、焊渣等杂质在安装上海良工阀门前应清理干净；管路连接标准与上海良工阀门连接标准一致，使用条件与上海良工阀门性能一致。在安装上海良工阀门时，应详细了解其性能和特点；上海良工阀门安装空间要保证使用方便，维修方便。为了避免螺钉、螺栓的松弛造成泄漏，使用前必须紧固每一个螺钉；使用时要注意上海良工阀门介质，使用压力温度等，以免对上海良工阀门造成损坏；如果上海良工阀门发生启闭不正常，应查明原因，排除故障，不得通过敲击、砸击等方式强制启闭。

Rising stem gate valves should not be installed in damp underground areas to avoid rusting of the valve stem. Dust, welding slag, and other impurities inside the pipeline should be cleaned before installing the Shanghai Lianggong valve; The pipeline connection standard is consistent with the valve connection standard of Shanghai Lianggong, and the usage conditions are consistent with the performance of Shanghai Lianggong valves. When installing Shanghai Lianggong valves, it is necessary to have a detailed understanding of their performance and characteristics; Shanghai Lianggong valve installation space should ensure convenient use and maintenance. To avoid leakage caused by loosening of screws and bolts, each screw must be tightened before use; When using, attention should be paid to the medium of Shanghai Lianggong valve, such as pressure and temperature, to avoid damage to Shanghai Lianggong valve; If the valve of Shanghai Lianggong experiences abnormal opening and closing, the cause should be identified and the fault should be eliminated. It is not allowed to force the opening and closing through knocking, smashing, or other methods.