德國(guó)萊克LIK品牌：進(jìn)口波紋管焊接針型閥的波紋管下端焊接在閥桿上，以防止工藝流體浸蝕閥桿，另一端置于閥體和閥蓋之間構(gòu)成靜密封。采用合適的材料，波紋管閥可用于高溫500℃和高壓2500Ib（42MPa）工況中。通常閥門(mén)行程為波紋管自由長(zhǎng)度的15%，因而波紋管占據(jù)很大的壓力空間，制造工藝相對(duì)復(fù)雜，價(jià)格較貴。但與傳統(tǒng)填料密封閥門(mén)相比，閥桿的密封更加可靠，在外泄漏要求比較嚴(yán)格的場(chǎng)合，如有毒介質(zhì)、強(qiáng)腐蝕介質(zhì)和放射性介質(zhì)以及熱油等場(chǎng)合中應(yīng)用廣泛。

進(jìn)口焊接波紋管針型閥技術(shù)參數(shù):

產(chǎn)品型號(hào):WJ61W

口徑規(guī)格:￠3≈￠25

公稱(chēng)壓力:1.0-6.4Mpa

適用溫度:-40≈450℃

連接方式:對(duì)焊接式

閥體材質(zhì):A105、SS304、SS304L、SS316、SS316L、WC6、WC9

進(jìn)口對(duì)焊接波紋管針型閥主要技術(shù)參數(shù)：

進(jìn)口對(duì)焊接波紋管針型閥主要外形尺寸：

針型閥的特點(diǎn)與作用：
針型閥:是儀表測(cè)量管路系統(tǒng)中重要組成部分，主要有截止閥和球閥，其功用是作開(kāi)啟或切斷管道通路用。針型閥具有安裝拆卸方便、連接緊固、有利于防火 、防爆和耐壓能力高、密封性能良好等優(yōu)點(diǎn)，是電站、煉油、化工裝置和儀表測(cè) 量管路中的一種*連接方式的閥門(mén)。針型閥的密封性良好，使用壽命長(zhǎng)，即使密封面損壞后，也只需要更換易損零件，即可繼續(xù)使用。安裝針型閥時(shí)應(yīng)使介質(zhì) 的流向與閥體上的箭頭方向*。手動(dòng)截止閥、球閥可安裝在管路的任何位置上 。針型閥是一種可以精確調(diào)整的閥門(mén)用途較廣，比如火焰切割用的割距，調(diào)整火焰溫度的旋鈕就是針型閥，儀表針型閥是儀表測(cè)量管路系統(tǒng)中重要組成部分，主 要有截止閥和球閥，其功用是作開(kāi)啟或切斷管道通路用。任何閥門(mén)的作用都是為 了切斷流體.根據(jù)閥芯的不同,可以分為截止閥,閘板閥,旋塞閥,球閥,碟形閥,針 型閥等等.針型閥的閥芯就是一個(gè)很尖的圓錐體,好象針一樣插入閥座,由此得名. 針型閥形比其他類(lèi)型的閥門(mén)能夠耐受更大的壓力,密封性能好,所以一般用于較小 流量,較高壓力的氣體或者液體介質(zhì)的密封.針型閥形與壓力表配合使用是zui合適 的了.一般的針型閥形都做成螺紋連接.

更多針型閥產(chǎn)品，請(qǐng)登錄http://www.aocunvalve。。ｃｏｍ/products/540.html 德國(guó)萊克LIK品牌 ，我們將竭誠(chéng)為您服 務(wù)。針型閥的特點(diǎn)與作用。
以下是參考譯文：

譯文：
Needle valve type, is an important part of the meter in the piping system, mainly cut-off valve and ball valve, its function is used as open or cut off the pipeline path. Type needle valve with easy installation and disassembly, fastening connections, is conducive to fire, explosion, and the advantages of high compression capacity, sealed performance is good, is power stations, oil refining, chemical industry and instrument measuring line of an advanced connection mode of the valve. Needle valve sealing good, long service life, even if the sealing surface damage, also need to replace quick-wear part only, can continue to use. When installing type needle valve should make the flow of medium and the direction of arrow on valve body. Manual stop valve, ball valve can be installed in any position on line. Type needle valve is a valve can be precisely adjusted use widely, such as flame cutting with the cutting distance, the flame temperature adjustment knob is the needle valve, instrument type needle valve is an important part of the meter in the piping system, mainly cut-off valve and ball valve, its function is used as open or cut off the pipeline path. The effect of any valve for cutting fluid. Depending on the valve core, can be divided into cut-off valve, gate valve, plug valve, ball valve, the disc valve, needle valve, etc. Type needle valve valve core is a very sharp cone, like the needle inserted into the seat, hence the name. Type needle valve type than any other type of valve that can tolerate more pressure, sealed performance is good, so generally used for small flow, high pressure gas or liquid medium sealing. Type needle valve and pressure gauge is used the most appropriate. General type needle valve type screw thread connection.

選用針型閥的原則

原文：
1 medium low temperature piping systems and devices, coupled with the valve cover should use low-temperature needle valve. (2) oil refinery catalytic cracking unit of the pipeline system, the choice of needle valve lift lever. 3 chemical system pH and other corrosive media devices and piping system, should use of austenitic stainless steel, Teflon seat ring of stainless steel needle valve. 4 metallurgy systems, power systems, petrochemical plants, urban high-temperature heating system piping system or media devices, choice of metal to metal seal needle valves. 5 the need for flow control, the choice of the worm gear, pneumatic or electric with V-shaped opening of the regulating needle valve. 6 oil, natural gas transmission mains, pipeline cleaning needs, and it takes buried in the ground, use full bore, all-welded structure of the needle valve; buried in the ground, select the full-bore welded connection or flange connection the ball. 7 refined oil pipelines and storage facilities, use the needle valve flange connection. 8 town gas and natural gas pipeline, the choice of flange and threaded connections within the needle valve. 9 metallurgical oxygen system piping systems should be selected after a rigorous degreasing treatment, the needle valve flange connection.選用針型閥的原則。

以下是參考譯文：

譯文：
選用針型閥的原則 1. 低溫介質(zhì)的管路系統(tǒng)和裝置上，宜選用加上閥蓋的低溫針型閥。2. 煉油裝置的催化裂化裝置的管路系統(tǒng)上，可選用升 降桿式針型閥。3. 化工系統(tǒng)的酸堿等腐蝕性介質(zhì)的裝置和管路系統(tǒng)中，宜選用奧氏體不銹鋼制造的、聚四氟乙烯為閥座密封圈的全不銹鋼針型閥。 4. 冶金系統(tǒng)、電力系統(tǒng)、石化裝置、城市供熱系統(tǒng)中的高溫介質(zhì)的管路系統(tǒng)或裝置上，可選用金屬對(duì)金屬密封針型閥。5. 需要進(jìn)行 流量調(diào)節(jié)時(shí)，可選用蝸輪蝸桿傳動(dòng)的、氣動(dòng)或電動(dòng)的帶V 形開(kāi)口的調(diào)節(jié)針型閥。6. 石油、天然氣的輸送主管線、需要清掃管線的，又需埋設(shè) 在地下的，選用全通徑、全焊接結(jié)構(gòu)的針型閥；埋設(shè)在地上的，選擇全通徑焊接連接或法蘭連接的球閥。 7. 成品油的輸送管線和貯存設(shè)備 ，選用法蘭連接的針型閥。 8. 城市煤氣和天然氣的管路上，選用法蘭連接和內(nèi)螺紋連接的針型閥。 9. 冶金系統(tǒng)中的氧氣管路系統(tǒng)中，宜 選用經(jīng)過(guò)嚴(yán)格脫脂處理，法蘭連接的針型閥

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