德國(guó)洛克進(jìn)口低溫絲扣止回閥物美價(jià)廉值得信賴

一、進(jìn)口低溫絲扣止回閥規(guī)格參數(shù)：

1、尺寸規(guī)格：DN10～DN200；

2、溫度范圍：-196℃～80℃；

3、壓力范圍：PN16～PN100；

4、閥體閥蓋：特種低溫鋼；

5、閥座閥芯：鍛造低溫鋼、四氟；

6、連接方式：德標(biāo)/國(guó)標(biāo)/美標(biāo)、法蘭、焊接、內(nèi)螺紋；

7、適用范圍：液態(tài)天然氣、已烯、二氧化碳、液氨、液氧、液氮、液氫等低溫介質(zhì)

8、應(yīng)用場(chǎng)合：氣體液化設(shè)備、空分設(shè)備；天然氣液化、儲(chǔ)運(yùn)設(shè)備；液態(tài)氧、氮、氬、氫、二氧化碳低溫貯槽及槽車；變壓吸附制氧、氮設(shè)備。

1. Size: DN 10-dn200;

2. Temperature range: - 196 ℃ - 80 ℃;

3. Pressure range: pn16-pn100;

4. Valve body and cover: special low temperature steel;

5. Valve seat and valve core: Forged low temperature steel, PTFE;

6. Connection mode: German standard / national standard / American Standard, flange, welding, internal thread;

7. Application scope: liquid natural gas, hexene, carbon dioxide, liquid ammonia, liquid oxygen, liquid nitrogen, liquid hydrogen and other low-temperature media

8. Application: gas liquefaction equipment, air separation equipment; natural gas liquefaction, storage and transportation equipment; liquid oxygen, nitrogen, argon, hydrogen, carbon dioxide cryogenic storage tanks and tank cars; pressure swing adsorption oxygen and nitrogen equipment.

二、進(jìn)口低溫絲扣止回閥產(chǎn)品簡(jiǎn)介：

德國(guó)LOCKE洛克進(jìn)口低溫絲扣止回閥又稱低溫逆止閥、低溫單向閥、低溫逆流閥、和低溫背壓閥，是指采用螺紋的連接方式，在低溫貯槽上或者低溫管道系統(tǒng)，依靠介質(zhì)本身流動(dòng)而自動(dòng)開、閉閥瓣，防止低溫介質(zhì)液氧，液氮，液氬，液化天然氣，LO2、LN2、LAR、LNG等倒流的閥門，

LOCKE低溫止回閥結(jié)構(gòu)緊湊、體積小、重量輕，防止倒流零泄露，穩(wěn)定性好。

The low temperature screw thread check valve imported from Germany Locke, also known as low temperature check valve, low temperature one-way valve, low temperature reverse flow valve and low-temperature back pressure valve, refers to the use of threaded connection, in the low-temperature storage tank or low-temperature pipeline system, depending on the flow of the medium itself to automatically open and close the valve disc, to prevent low-temperature medium liquid oxygen, liquid nitrogen, liquid argon, liquefied natural gas, LO2, LN2, LAR, LNG, etc Flow valve,

Locke low temperature check valve has the advantages of compact structure, small volume, light weight, preventing backflow and zero leakage and good stability.

三、進(jìn)口低溫絲扣止回閥安裝與維護(hù)：

1、本閥門通路兩端須堵塞，存在干燥通風(fēng)的室內(nèi)。如長(zhǎng)期存放，應(yīng)經(jīng)常檢查防銹蝕。

2、安裝前應(yīng)將閥門清洗干凈，并消除在運(yùn)輸過程中造成的缺陷。

3、安裝時(shí)必須仔細(xì)核對(duì)閥門上的標(biāo)志和銘牌是否符合使用要求。

4、升降式垂直瓣止回閥應(yīng)安裝在垂直管道上。

5、升降式水平瓣止回閥應(yīng)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(yīng)獨(dú)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(shí)，應(yīng)特別注意介質(zhì)流動(dòng)方向，應(yīng)使介質(zhì)正常流動(dòng)方向與閥體上指示的箭頭方向相一致，否則就會(huì)截?cái)嘟橘|(zhì)的正常流動(dòng)。底閥應(yīng)安裝在水泵吸水管路的底端。

8、通式升降式止回閥應(yīng)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(zhì)自下而上流動(dòng)。

9、止回閥關(guān)閉時(shí)，會(huì)在管路中產(chǎn)生水錘壓力，嚴(yán)重時(shí)會(huì)導(dǎo)致閥門、管路或設(shè)備的損壞，尤其對(duì)于大口管路或高壓管路，故應(yīng)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 should be checked for rust.

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

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

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

5. Lift type horizontal disc check valve shall be installed on horizontal pipeline.

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

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

8. The general lifting check valve should be installed on the horizontal pipeline. The vertical lifting check valve and bottom valve are generally installed on the vertical pipeline, and the medium flows from bottom to top.

9. When the check valve is closed, there will be water hammer pressure in the pipeline, which will cause damage to the valve, pipeline or equipment in serious cases, especially for the large opening pipeline or high pressure pipeline, so it should be paid great attention by the check valve selectors.

四、進(jìn)口低溫絲扣止回閥結(jié)構(gòu)特點(diǎn)：

1、流體阻力小，密封面受介質(zhì)的沖刷和侵蝕小。

2、其防水錘性能好，結(jié)構(gòu)簡(jiǎn)單，成本低

3、介質(zhì)流向受限制，只允許介質(zhì)向一個(gè)方向流動(dòng)。

4、形體簡(jiǎn)單，結(jié)構(gòu)長(zhǎng)度短，制造工藝性好，適用范圍廣。

5、流道通暢、流體阻力小

6、動(dòng)作靈敏、密封性能好

7、閥瓣行程短、關(guān)閥沖擊力小

8、整體結(jié)構(gòu)、簡(jiǎn)單緊湊、造型美觀

9、使用壽命長(zhǎng)、可靠性高

1. The fluid resistance is small, and the sealing surface is less eroded and eroded by the medium.

2. The hammer has good performance, simple structure and low cost

3. The flow direction of the medium is limited and only one direction is allowed to flow.

4. The utility model has the advantages of simple shape, short structure length, good manufacturing technology and wide application range.

5. The flow channel is unobstructed and the fluid resistance is small

6. Sensitive action, good sealing performance

7. The valve disc stroke is short and the impact force of valve closing is small

8. Overall structure, simple and compact, beautiful shape

9. Long service life and high reliability