1. Throttle valve: A throttle valve is a device used to regulate fluid flow. In a pipeline system, in order to maintain a certain value of medium throughput, it is necessary to control the fluid, which is called throttling. There are three types of commonly used throttle valves: orifice type, nozzle type, and venturi type.

2、分流器：分流器又称三通或三通旋塞阀，它是一种可以改变流体流向的阀门；当需要改变介质流动方向时就可以使用分流器了。分流器的种类较多，主要有直通式、直角式和直流式三种形式。其中直通式的结构比较简单、体积小；直角的结构简单、加工方便；而直流式的结构复杂且成本较高（但性能较好）。

2. Diverter: Diverter, also known as a three-way or three-way plug valve, is a valve that can change the flow direction of fluid; When it is necessary to change the flow direction of the medium, a splitter can be used. There are many types of diverters, mainly including straight through, right angle, and direct current. The straight through structure is relatively simple and has a small volume; The right angle has a simple structure and convenient processing; The direct current type has a complex structure and high cost (but good performance).

3、截止阀：截止止回球型闸门适用于水力及火力发电厂汽轮机冷凝液系统的启闭和切断工作以及其它类似工况的启闭和关闭作业等场合.具有动作可靠、密封性能好等优点。

3. Stop valve: The stop check ball gate is suitable for the opening, closing, and cutting off of the condensate system of steam turbines in hydraulic and thermal power plants, as well as other similar operating conditions. It has the advantages of reliable operation and good sealing performance.

4、蝶形止回球型闸门适用于水力及火力发电厂汽轮机冷凝液系统的启闭和切断工作以及其它类似工况的启停和关闭作业.具有动作可靠密封性能好等优点。

4. The butterfly check ball gate is suitable for the opening, closing, and cutting of the condensate system of steam turbines in hydraulic and thermal power plants, as well as other similar working conditions. It has the advantages of reliable operation and good sealing performance.

5、隔膜式止回球型闸门用于水利电力系统中的水库溢洪道泄洪排沙口等的启闭操作；其特点是：重量轻强度高寿命长操作简便安装维修容易。

5. Diaphragm type check ball gates are used for the opening and closing operations of reservoir spillway and sediment discharge outlets in water conservancy and power systems; Its characteristics are: light weight, high strength, long lifespan, easy operation, easy installation and maintenance.

6、旋涡泵：旋涡泵是依靠旋转叶轮所产生的强大吸力和压力差来抽水的离心水泵。它是利用液体在旋转过程中产生的离心力来工作的水泵品种之一。

6. Vortex pump: Vortex pump is a centrifugal water pump that relies on the strong suction and pressure difference generated by the rotating impeller to pump water. It is one of the water pump varieties that utilizes the centrifugal force generated by the liquid during the rotation process to work.

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