一 用途 Application

球阀是一种管线阀门产品，用于接通或截断管路中的介质。一般是处于全开或全关状态，在微开状态下可作流量的调节使用。广泛适用于工况条件下水、气、油品等介质的各种管路中。

Ball valve is pipeline valve, used for connecting or cutting off medium in the pipelines. Normally it is at the state of opening or closing. And it could function as regulating the flow when it is at the state of slightly open. It is used on the pipeline such as water, gas, oil etc.

二 性能规范 Performance Specification

压力等级： Class150； Class300； Class600；

Pressure: Class150； Class300； Class600；

公称尺寸：NPS 2 ～NPS24；

Nominal Size: NPS 2 ～NPS24

阀体材料： ASTM A216 WCB； ASTM A351 CF8；

Body Material:ASTM A216 WCB；ASTM A351 CF8；

产品的设计、制造按API6D的规定；检查试验按API6D的规定；法兰连接尺寸按 ASME B16.5的规定；结构长度按API6D的规定；

Designed and manufactured according to API6D; Inspected and tested according to API6D;

Flange ends according to ASME B16.5; Face to face according to API 6D

适用介质：水、蒸汽、油品等。

Suitable Medium: Water, Steam, Oil etc

●对WCB材料，适用操作温度：（0～150）℃

For WCB material: suitable temperature for operation: （0～150）℃

在适用操作温度范围中最大操作压力分别见表1 表1

Maximum operation pressure based on suitable temperature for operation: Form 1:

温度

℃各磅级的最大操作压力 ( MPa )Class 150Class 300Class 60001.965.1110.211501.584.519.02

Temperature℃Max.working pressure ( MPa )Class 150Class 300Class 60001.965.1110.211501.584.519.02

●对CF8材料，适用操作温度：（0～150）℃

For CF8 material: suitable temperature for operation: （0～150）℃

在适用操作温度范围中最大操作压力分别见表1 表1

Maximum operation pressure based on suitable temperature for operation: Form 1:

温度

℃各磅级的最大操作压力 ( MPa )Class 150Class 300Class 60001.904.969.931501.423.707.40

Temperature

℃Max.working pressure ( MPa )Class 150Class 300Class 60001.904.969.931501.423.707.40

三 作用原理及结构特点 Working Principal and Structural Features 1 作用原理：通过手柄或蜗轮带动阀杆和球体旋转90°，以达到密封副之间的开启和关闭。