品牌進口蝶式止回閥認準德國洛克 

一、進口蝶式止回閥結構優(yōu)點：

1.體積小、重量輕、結構緊湊、便于維修。

2.閥板采用對偶板上加兩個扭力彈簧的設計,可使閥板自行速閉。

3.因速閉作用,可防止介質倒流,消除水錘作用強。

4.閥體結構長度尺寸小、剛性好。

5.安裝方便,可在水平、垂直兩個方向的管路上安裝。

6.達到完全密封,水壓試驗泄漏量為零。

7.使用性能安全可靠,抗干擾性好。

1. Small size, light weight, compact structure, easy to maintain.

2. The valve plate adopts the design of dual plate plus two torsion springs, which can make the valve plate close automatically.

3. Due to the quick closing function, it can prevent the backflow of medium and eliminate the strong effect of water hammer.

4. The length and size of valve body structure are small and the rigidity is good.

5. It is easy to install, and can be installed on horizontal and vertical pipelines.

6. Achieve complete sealing, and the leakage of hydrostatic test is zero.

7. Safe and reliable performance, good anti-interference.

二、進口蝶式止回閥描述：

德國LOCKE洛克進口蝶式止回閥由閥體、閥瓣、閥桿及彈簧等零件組成，采用對夾連接。由于閥瓣的關閉行程短，并且有彈簧加載，可顯著減少水錘現(xiàn)象。該閥主要適用于城市、工業(yè)及高層建筑給水、排水管網(wǎng)上。由于其結構長度比一般止回閥短，對有安裝空間限制的場所最為適用。

The butterfly check valve imported from Locke lock, Germany, is composed of valve body, disc, stem, spring and other parts, which are connected by clamp. Due to the short closing stroke of the disc and the spring loading, the water hammer phenomenon can be significantly reduced. The valve is mainly applicable to the water supply and drainage network of urban, industrial and high-rise buildings. Because its structure length is shorter than general check valve, it is most suitable for places with installation space limitation.

三、進口蝶式止回閥安裝與維護：

1,本閥門通路兩端須堵塞，存在干燥通風的室內。如長期存放，應經(jīng)常檢查防銹蝕。

2,安裝前應將閥門清洗干凈，并消除在運輸過程中造成的缺陷。

3,安裝時必須仔細核對閥門上的標志和銘牌是否符合使用要求。

4,升降式垂直瓣止回閥應安裝在垂直管道上。

5,升降式水平瓣止回閥應安裝在水平管道上。

6,在管線中不要使止回閥承受重量，大型的止回閥應獨立支撐，使之不受管系產(chǎn)生的壓力的影響。

7,安裝止回閥時，應特別注意介質流動方向，應使介質正常流動方向與閥體上指示的箭頭方向相一致，否則就會截斷介質的正常流動。底閥應安裝在水泵吸水管路的底端。

8,通式升降式止回閥應安裝于水平管路上,立式升降式止回閥和底閥一般安裝在垂直管路上,并且介質自下而上流動。

9,止回閥關閉時，會在管路中產(chǎn)生水錘壓力，嚴重時會導致閥門、管路或設備的損壞，尤其對于大口管路或高壓管路，故應引起止回閥選用者的高度注意。

1. Both ends of the valve passage must be blocked and there is a dry and ventilated room. If it is stored for a long time, it is necessary to check the anti rust corrosion frequently.

2. Before installation, the valve shall be cleaned and defects caused during transportation shall be eliminated.

3. During installation, it is necessary to carefully check whether the mark and nameplate on the valve meet the use requirements.

4. Lift type vertical disc check valve shall be installed on the vertical pipeline.

5. The lift horizontal disc check valve shall be installed on the horizontal pipeline.

6. Do not make the check valve bear the weight in the pipeline, and the large check valve should be supported independently, so that it is not affected by the pressure produced by the pipeline system.

7. When installing the check valve, pay special attention to the flow direction of the medium, make the normal flow direction of the medium consistent with the arrow direction indicated on the valve body, otherwise the normal flow of the medium will be cut off. The bottom valve shall be installed at the bottom end of the water pump suction pipeline.

8. The through lift check valve shall be installed on the horizontal pipeline, while the vertical lift check valve and bottom valve shall be generally installed on the vertical pipeline, and the medium shall flow from bottom to top.

9. When the check valve is closed, water hammer pressure will be generated in the pipeline, which will cause damage to the valve, pipeline or equipment in serious cases, especially for the large mouth pipeline or high-pressure pipeline, so highly attention shall be paid to the selection of the check valve.

四、進口蝶式止回閥技術參數(shù)：

1、規(guī)格范圍：DN15-DN800

2、溫度范圍：-45℃～570℃

3、壓力范圍：PN16-PN320

4、閥體材質：鑄鋼/不銹鋼

5、閥桿材質：SS304

6、閥蓋材質：鑄鋼/不銹鋼

7、閥瓣材質：不銹鋼

8、連接方式：對夾式

9、適用范圍：水、油品、蒸氣、燃氣、氣體及某些腐蝕性液體。

1、 Specification range: DN15-DN800

2. Temperature range: - 45 ℃ ~ 570 ℃

3. Pressure range: pn16-pn320

4. Valve body material: cast steel / stainless steel

5. Stem material: SS304

6. Valve cover material: cast steel / stainless steel

7. Disc material: stainless steel

8. Connection mode: wafer type

9. Scope of application: water, oil, steam, gas, gas and some corrosive liquids.