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公司基本資料信息
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NKJ41H-4.0-DN10,NKJ41H-4.0-DN15,NKJ41H-4.0-DN20,NKJ41H-4.0-DN25,NKJ41H-4.0-DN32,NKJ41H-4.0-DN40,NKJ41H-4.0-DN50,NKJ41H-4.0-DN65,NKJ41H-4.0-DN80,NKJ41H-4.0-DN100,NKJ41H-4.0-DN125,NKJ41H-4.0-DN150,NKJ41H-6.4-DN10,NKJ41H-6.4-DN15,NKJ41H-6.4-DN20,NKJ41H-6.4-DN25,NKJ41H-6.4-DN32,NKJ41H-6.4-DN40,NKJ41H-6.4-DN50,NKJ41H-6.4-DN65,NKJ41H-6.4-DN80,NKJ41H-6.4-DN100,NKJ41H-6.4-DN125,NKJ41H-6.4-DN150,NKJ41H-10.0-DN10,NKJ41H-10.0-DN15,NKJ41H-10.0-DN20,NKJ41H-10.0-DN25,NKJ41H-10.0-DN32,NKJ41H-10.0-DN40,NKJ41H-10.0-DN50,NKJ41H-10.0-DN65,NKJ41H-10.0-DN80,NKJ41H-10.0-DN100,NKJ41H-10.0-DN125,NKJ41H-10.0-DN150,真空截止閥
一、NKJ41H真空截止閥概述：
法蘭真空隔離截止閥適用于公稱壓力PN4.0～10.0Mpa，工作溫度≤200℃的火力電站回水冷凝系統(tǒng)管道上，切斷或接通中的介質(zhì)。適用介質(zhì)為：水、蒸汽等。密封面運(yùn)動(dòng)磨擦力小、啟閉輕便，而且密封面磨損有自動(dòng)補(bǔ)償功能。結(jié)構(gòu)簡單、緊湊、檢修方便，使用壽命長。閥蓋填料室設(shè)有真空密封結(jié)構(gòu)，具有自脹壓緊作用，并且密封采用高強(qiáng)膨脹材料密封，使系統(tǒng)與大氣完全隔離，具有很好的系統(tǒng)氣密性。本系列閥門連接形式分法蘭、焊接兩種，驅(qū)動(dòng)方式有手動(dòng)、電動(dòng)兩種。該閥門適用于工作溫度≤425℃和≤550℃，工作介質(zhì)為水、蒸汽或空氣的管路上，作為啟閉裝置；尤其適用于火電廠汽機(jī)冷凝和真空負(fù)壓系統(tǒng)，起真空隔離密封作用。
NKJ41H真空截止閥產(chǎn)品結(jié)構(gòu)特點(diǎn)：
1.產(chǎn)品按JB/T3595標(biāo)準(zhǔn)設(shè)計(jì)制造，滿足電站設(shè)備配套使用要求。
2.設(shè)計(jì)了真空密封結(jié)構(gòu)填料室，隔離真空可靠。
3.閥桿經(jīng)調(diào)質(zhì)及表面氮化處理，有良好的抗腐蝕性，抗擦傷和耐磨性。
4.法蘭墊片采用復(fù)合材料，膨脹系數(shù)大，氣密性能好，保證系統(tǒng)與大氣隔離可靠。
5.倒密封采用不銹鋼螺紋連接密封座或本體堆焊奧氏體不銹鋼而成，倒密封可靠。填料更換和維修可在不停機(jī)情況下進(jìn)行，方便快捷不影響系統(tǒng)運(yùn)行。
NKJ41H真空截止閥主要零件的材料說明：
閥體 | 25、WCB | Cr5Mo |
閥蓋 | 25、WCB | Cr5Mo |
支架 | 25、WCB | Cr5Mo |
閥瓣 | 2Cr13、WCB | Cr5Mo |
閥桿 | 2Cr13 | 38CrMoAL、25Cr2MoV |
閥座 | 25、304 | 304 |
密封環(huán) | 膨脹柔性石墨 | |
填料 | 膨脹柔性石墨 | |
閥桿螺母 | ZCuA110Fe3 | |
NKJ41H真空截止閥主要尺寸及重量：
| 公稱壓力PN(MPa) | 主要外形及連接尺寸(mm) | |||||||
L | H手 | D | Do | D1 | L1 | α | W | ||
10 | 4.0 | 130 | 245 | 36 | 11 | 18.4 | 10 | 120 | |
15 | 130 | 245 | 36 | 16 | 22.5 | 10 | 120 | ||
20 | 150 | 265 | 44 | 21 | 28.5 | 11 | 160 | ||
25 | 160 | 270 | 48 | 26 | 34.5 | 12 | 200 | ||
32 | 180 | 285 | 48 | 34 | 37.5° | 200 | |||
40 | 200 | 320 | 55 | 40 | 37.5° | 240 | |||
50 | 230 | 365 | 64 | 48 | 37.5° | 320 | |||
65 | 290 | 410 | 82 | 66 | 37.5° | 300 | |||
80 | 310 | 430 | 95 | 78 | 37.5° | 3000 | |||
100 | 35 | 470 | 117 | 100 | 37.5° | 350 | |||
125 | 400 | 500 | 143 | 126 | 37.5° | 350 | |||
150 | 480 | 533 | 167 | 150 | 37.5° | 400 | |||
10 | 6.4 | 130 | 245 | 36 | 10 | 18.4 | 10 | 120 | |
15 | 130 | 245 | 36 | 15 | 22.5 | 10 | 120 | ||
20 | 150 | 265 | 44 | 20 | 28.5 | 11 | 160 | ||
25 | 160 | 270 | 48 | 25 | 34.5 | 12 | 200 | ||
32 | 180 | 280 | 48 | 33 | 37.5° | 200 | |||
40 | 200 | 320 | 55 | 39 | 37.5° | 240 | |||
50 | 230 | 365 | 64 | 48 | 37.5° | 320 | |||
65 | 290 | 410 | 82 | 65 | 37.5° | 320 | |||
80 | 310 | 430 | 95 | 76 | 37.5° | 360 | |||
100 | 350 | 470 | 117 | 98 | 37.5° | 400 | |||
125 | 480 | 500 | 143 | 123 | 37.5° | 400 | |||
150 | 480 | 533 | 167 | 148 | 37.5° | 500 | |||
10 | 10.0 | 130 | 245 | 36 | 10 | 18.4 | 10 | 120 | |
15 | 130 | 245 | 36 | 14 | 22.5 | 10 | 120 | ||
20 | 150 | 265 | 44 | 20 | 28.5 | 11 | 160 | ||
25 | 160 | 270 | 48 | 25 | 34.5 | 12 | 200 | ||
32 | 180 | 285 | 48 | 32 | 37.5° | 200 | |||
40 | 200 | 320 | 55 | 38 | 37.5° | 240 | |||
50 | 230 | 355 | 64 | 48 | 37.5° | 320 | |||
65 | 290 | 410 | 82 | 63 | 37.5° | 320 | |||
80 | 310 | 430 | 95 | 74 | 37.5° | 360 | |||
100 | 350 | 470 | 117 | 97 | 37.5° | 400 | |||
125 | 400 | 500 | 143 | 123 | 37.5° | 400 | |||
150 | 480 | 533 | 167 | 148 | 37.5° | 500 | |||
NKJ41H-4.0-DN10,NKJ41H-4.0-DN15,NKJ41H-4.0-DN20,NKJ41H-4.0-DN25,NKJ41H-4.0-DN32,NKJ41H-4.0-DN40,NKJ41H-4.0-DN50,NKJ41H-4.0-DN65,NKJ41H-4.0-DN80,NKJ41H-4.0-DN100,NKJ41H-4.0-DN125,NKJ41H-4.0-DN150,NKJ41H-6.4-DN10,NKJ41H-6.4-DN15,NKJ41H-6.4-DN20,NKJ41H-6.4-DN25,NKJ41H-6.4-DN32,NKJ41H-6.4-DN40,NKJ41H-6.4-DN50,NKJ41H-6.4-DN65,NKJ41H-6.4-DN80,NKJ41H-6.4-DN100,NKJ41H-6.4-DN125,NKJ41H-6.4-DN150,NKJ41H-10.0-DN10,NKJ41H-10.0-DN15,NKJ41H-10.0-DN20,NKJ41H-10.0-DN25,NKJ41H-10.0-DN32,NKJ41H-10.0-DN40,NKJ41H-10.0-DN50,NKJ41H-10.0-DN65,NKJ41H-10.0-DN80,NKJ41H-10.0-DN100,NKJ41H-10.0-DN125,NKJ41H-10.0-DN150,真空截止閥
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