(1) 轭架套管 - 采用铝青铜材料以降低操作扭矩。大多数通径的阀门都配置滚珠轴承轭架套管。
(1) Yokesleeves – furnished in aluminum-bronze to reduce operating torque. Most sizes furnished with ball bearing yokesleeves.

(2) 带环螺栓 - 旋启式螺栓使得维护和填料更换更加简便易行。
(2) Eye Bolts – swing bolts facilitate easier maintenance and packing replacement.

(3) 阀盖连接 - ANSI压力等级不同，连接也有所不同。
(3) Bonnet Joint – joint varies with ANSI class rating.

(4) 阀座环 - 坚固耐用，全流道(全端口)环，螺纹安装在阀体内，易于维护。
(4) Seat Ring – heavy duty, full ported ring threaded into body for easy maintenance.

(5) 阀体 - 全流道(全端口)，坚固耐用阀体，符合API 600标准的壁厚，最大限度延长使用寿命。配置轮毂，用于备选的旁路或排泄阀。
(5) Body – full ported, heavy duty body with API 600 wall thickness for maximum service life. Provided with bosses for optional by-passes or drains.

(6) 手轮 - 易于操作的大手轮。也可配置齿轮操作机构，马达执行机构或缸体执行机构，以满足更高的应用环境要求。
(6) Handwheel – large handwheels for easy operation. Also available with gearing, motor actuators or cylinder actuators for more difficult services.

(7) 阀杆 - 精密机加工的阀杆具有后座结构。
(7) Stem – precision machined stem has a backseat design.

(8) 后座 - 机加工的阀盖阀杆衬套提供支撑阀杆密封的功能。
(8) Backseat – machined bonnet stem bushing provides back-up stem seal.

(9) 阀瓣 - 可提供塞型、球型或V型端口结构的坚固耐用的阀瓣。
(9) Disc – heavy duty disc available in plug, ball or V-port design.

(10) 连接端口 - 根据连接管道的情况，可选择法兰或对焊连接端口。
(10) End Connections – choice of flanged or butt weld ends for piping flexibility.

选型
Sizing

　　为了获得最好的性能，截流止回阀应该在足以支撑阀门全开的流量下运行，但是流量又不能大的以至于产生过度的湍流和压降。流量过大，可能会损坏阀门内部构件，缩短阀门使用寿命。
　　For best performance, stop-check valves should operate within a flow range sufficient to hold the valve fully open, but not so high that it produces excessive turbulence and pressure drop. Either extreme may damage valve internal parts and shorten valve life.
　　选择正确的截流止回阀的最有效方法就是根据运行的流速计算法门的“阀座端口速度”(参阅《技术参数》章节)。理想的截流止回阀的阀座端口速度应该位于下列公式表示的速度范围内：
　　The most effective method to correctly size a stop-check valve is to calculate the valve “seat port velocity” (see Technical Data section) at the operating flow rate. The ideal seat port velocity for a stop-check valve should fall within the velocity range expressed by the following formula:
　　40 ≤ 速度(英尺/秒) ≤ 120
　　40 ≤ velocity (fps) ≤ 120
　　在此， = 在工作环境下流体介质特定流量的平方根。
　　Where = Square root of specific volume of flow media at operation conditions.
　　阀门通径应该上下调整，直到阀座端口速度位于最大使用寿命的范围之内为止。
　　Valve size should be adjusted up or down until the seat port velocity is within this range for maximum value service life.