点击图片查看原图
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,真空截止阀
一、NKJ41H真空截止阀概述：
法兰真空隔离截止阀适用于公称压力PN4.0～10.0Mpa，工作温度≤200℃的火力电站回水冷凝系统管道上，切断或接通中的介质。适用介质为：水、蒸汽等。密封面运动磨擦力小、启闭轻便，而且密封面磨损有自动补偿功能。结构简单、紧凑、检修方便，使用寿命长。阀盖填料室设有真空密封结构，具有自胀压紧作用，并且密封采用高强膨胀材料密封，使系统与大气完全隔离，具有很好的系统气密性。本系列阀门连接形式分法兰、焊接两种，驱动方式有手动、电动两种。该阀门适用于工作温度≤425℃和≤550℃，工作介质为水、蒸汽或空气的管路上，作为启闭装置；尤其适用于火电厂汽机冷凝和真空负压系统，起真空隔离密封作用。
NKJ41H真空截止阀产品结构特点：
1.产品按JB/T3595标准设计制造，满足电站设备配套使用要求。
2.设计了真空密封结构填料室，隔离真空可靠。
3.阀杆经调质及表面氮化处理，有良好的抗腐蚀性，抗擦伤和耐磨性。
4.法兰垫片采用复合材料，膨胀系数大，气密性能好，保证系统与大气隔离可靠。
5.倒密封采用不锈钢螺纹连接密封座或本体堆焊奥氏体不锈钢而成，倒密封可靠。填料更换和维修可在不停机情况下进行，方便快捷不影响系统运行。
NKJ41H真空截止阀主要零件的材料说明：
阀体 | 25、WCB | Cr5Mo |
阀盖 | 25、WCB | Cr5Mo |
支架 | 25、WCB | Cr5Mo |
阀瓣 | 2Cr13、WCB | Cr5Mo |
阀杆 | 2Cr13 | 38CrMoAL、25Cr2MoV |
阀座 | 25、304 | 304 |
密封环 | 膨胀柔性石墨 | |
填料 | 膨胀柔性石墨 | |
阀杆螺母 | ZCuA110Fe3 | |
NKJ41H真空截止阀主要尺寸及重量：
| 公称压力PN(MPa) | 主要外形及连接尺寸(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,真空截止阀
