管道阀门的使用特性：它确定了阀门的主要使用性能和使用范围，属于阀门使用特性的有：阀门的类别（闭路阀门、调节阀门、安全阀门等）；产品类型（闸阀、截止阀、蝶阀、球阀等）；阀门主要零件（阀体、阀盖、阀杆、阀瓣、密封面）的材料；阀门传动方式等。
Service characteristics of pipeline valves: It determines the main performance and scope of use of valves, belonging to the use characteristics of valves: types of valves (closed-circuit valves, regulating valves, safety valves, etc.); product types (gate valves, globe valves, butterfly valves, ball valves, etc.); main parts of valves (body, cover, stem, etc.). Disc, sealing surface) material; valve transmission mode, etc.