進口手動蝶閥的分類及選型依據德國洛克 

一、進口手動蝶閥產品簡介：

德國《LOCKE》洛克進口手動蝶閥蝶板安裝于管道的方向。在蝶閥閥體圓柱形通道內，圓盤形蝶板繞著軸線旋轉，旋轉角度為0°-90°之間，旋轉到90°時，閥門則牌全開狀態(tài)。蝶閥結構簡單、體積小、重量輕，只由少數(shù)幾個零件組成。而且只需旋轉即可快速啟閉，操作簡單，同時該閥門具有良好的流體控制特性。蝶閥處于完全開啟位置時，蝶板厚度是介質流經閥體時唯一的阻力，因此通過該閥門所產生的壓力降很小，故具有較好的流量控制特性。蝶閥有彈性密封和的密封兩種密封型式。彈性密封閥門，密封圈可以鑲嵌在閥體上或附在蝶板周邊。 

The butterfly plate of lock imported manual butterfly valve is installed in the direction of pipeline. In the cylindrical channel of butterfly valve body, the disc-shaped butterfly plate rotates around the axis with the rotation angle between 0 ° - 90 °. When it rotates to 90 °, the valve will be in full open state. Butterfly valve is simple in structure, small in volume and light in weight, and only consists of a few parts. The valve can be opened and closed quickly with only rotation, and the operation is simple. At the same time, the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the butterfly plate thickness is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has better flow control characteristics. Butterfly valve has two types of seal: elastic seal and seal. Elastic sealing valve, sealing ring can be inlaid on the valve body or attached to the periphery of butterfly plate.

二、進口手動蝶閥結構特點：

1、設計新穎、合理、結構獨特、重量輕、啟閉迅速。

2、操作力矩小、操作方便、省力靈活。

3、采用適應的材料以滿足低、中、高溫不同介質溫度及腐蝕性介質。

4、90°啟閉、開關迅速、操作扭矩小、省力輕巧。

5、結構簡單緊湊、小巧輕便、運輸、安裝、拆卸容易。

6、密封性能好、使用壽命長、可達到零泄漏。

7、選擇了不同的零部件材料可適應多種介質。

8、流量特性近似于直線調節(jié)性能好。

1. New design, reasonable, unique structure, light weight, quick opening and closing.

2. Small operating torque, convenient operation, labor saving and flexible.

3. Suitable materials are used to meet the requirements of low, medium and high temperature medium temperature and corrosive medium.

4. 90 ° opening and closing, quick switch, small operating torque, labor saving and light.

5. Simple and compact structure, small and light, easy to transport, install and disassemble.

6. Good sealing performance, long service life and zero leakage.

7. Different component materials are selected to adapt to a variety of media.

8. The flow characteristic is similar to that of linear regulation.

三、進口手動蝶閥安裝于維護：

1、在安裝時，閥瓣要停在關閉的位置上。

2、開啟位置應按蝶板的旋轉角度來確定。

3、帶有旁通閥的蝶閥，開啟前應先打開旁通閥。

4、應按制造廠的安裝說明書進行安裝，重量大的蝶閥，應設置牢固的基礎。

5、蝶閥的蝶板安裝于管道的直徑方向。在蝶閥閥體圓柱形通道內，圓盤形蝶板繞著軸線旋轉，旋轉角度為 0°~90° 之間，旋轉到 90° 時，閥門則牌全開狀態(tài)。

6、如果要求蝶閥作為流量控制使用，主要的是正確選擇閥門的尺寸和類型。蝶閥的結構原理尤其適合制作大口徑閥門。蝶閥不僅在石油、煤氣、化工、水處理等一般工業(yè)上得到廣泛應用，而且還應用于熱電站的冷卻水系統(tǒng)。

7、常用的蝶閥有對夾式蝶閥和法蘭式蝶閥兩種。對夾式蝶閥是用雙頭螺栓將閥門連接在兩管道法蘭之間，法蘭式蝶閥是閥門上帶有法蘭，用螺栓將閥門上兩端法蘭連接在管道法蘭上。

8、蝶閥的蝶板安裝于管道的直徑方向。在蝶閥閥體圓柱形通道內，圓盤形蝶板繞著軸線旋轉，旋轉角度為 0°~90° 之間，旋轉到 90° 時，閥門則牌全開狀態(tài)。

1. During installation, the disc shall be stopped at the closed position.

2. The opening position shall be determined according to the rotation angle of butterfly plate.

3. For butterfly valve with bypass valve, the bypass valve shall be opened before opening.

4. The installation shall be carried out according to the installation instructions of the manufacturer. The heavy butterfly valve shall be provided with a firm foundation.

5. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, with the rotation angle between 0 ° and 90 °. When it rotates to 90 °, the valve will be fully open.

6. If butterfly valve is required to be used as flow control, the main thing is to correctly select the size and type of valve. The structure and principle of butterfly valve is especially suitable for making large diameter valve. Butterfly valve is not only widely used in petroleum, gas, chemical industry, water treatment and other general industries, but also in the cooling water system of thermal power station.

7. There are two kinds of butterfly valves commonly used: wafer butterfly valve and flange butterfly valve. The double clip butterfly valve is connected between two pipe flanges with stud bolts. The flange butterfly valve has flange on the valve, and the flange on both ends of the valve is connected to the pipe flange with bolts.

8. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, with the rotation angle between 0 ° and 90 °. When it rotates to 90 °, the valve will be fully open.

四、進口手動蝶閥主要參數(shù)：

Driving mode: manual connection mode: wafer, flange, welding

Applicable temperature: - 40 ℃ ~ + 800 ℃ sealing structure: soft sealing, hard sealing

Pressure range: 2.5-25mpa nominal diameter: dn40-2000

Common materials: cast iron, cast steel, 304316316l, alloy steel, etc.