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闸阀是最常用的截断阀之一，主要用来接通或截断管路中的介质，不适用于调节介质流量。闸阀适用的压力、温度及口径范围很大，尤其适用于中、大口径的管道。
闸阀的主要优点：
（1）流体阻力小。闸阀闸体内部介质通道是直通的，介质流经闸阀时不改变其流动方向，因而流动阻力较小。
（2）启闭较省力。启闭时闸板运动方向与介质流动方向相垂直。与截止阀相比，闸阀的启闭较为省力。
（3）介质流动方向一般不受限制。介质可从闸阀两侧任意方向流过，均能达到接通或截断的目的。便于安装，适用于介质的流动方向可能改变的管路中。
主要零件材料及性能规范
|
主要零部件 |
阀体、阀盖、闸板 |
WCB |
ZG1Cr18Ni9Ti |
ZG1Cr18Ni12Mo2Ti
0Cr18Ni12Mo2Ti |
ZG2Cr5Mo |
|
阀杆 |
1Cr13 |
1Cr18Ni9Ti |
20Cr1Mo1V1 |
|
阀杆螺母 |
ZguAL10Fe3/球墨铸铁 |
|
填料 |
柔性石墨、石墨石棉盘根 |
|
主要
参数 |
适用介质 |
蒸汽、油品、水等 |
硝酸类 |
醋酸类 |
蒸汽、油品、水等 |
|
适用适用温度℃ |
≤425 |
≤200 |
≤200 |
≤425 |
|
型 号 |
公 称 |
主要结构尺寸(mm) |
阀体
材料 |
性能规范 |
|
通径
DN(mm) |
压力 PN(MPa) |
D |
L |
H |
适用温度
(℃) |
适用
介质 |
|
Z56０２Y-250 |
65 |
25.0 |
400 |
450 |
640 |
WCB |
≤425 |
蒸汽等 |
|
" |
80 |
" |
400 |
470 |
670 |
" |
" |
" |
|
" |
100 |
" |
500 |
550 |
790 |
" |
" |
" |
|
" |
125 |
" |
500 |
600 |
960 |
" |
" |
" |
|
" |
150 |
" |
550 |
700 |
1050 |
" |
" |
" |
|
" |
175 |
" |
550 |
750 |
1070 |
" |
" |
" |
|
" |
200 |
" |
600 |
800 |
1100 |
" |
" |
" |
|
" |
225 |
" |
600 |
850 |
1150 |
" |
" |
" |
|
" |
250 |
" |
650 |
1050 |
1200 |
" |
" |
" |
|
" |
300 |
" |
700 |
1300 |
1250 |
" |
" |
" |
|
" |
350 |
" |
750 |
1300 |
1300 |
" |
" |
" |
|
Z56０２Y-320 |
65 |
32.0 |
400 |
450 |
640 |
WCB |
≤425 |
蒸汽等 |
|
" |
80 |
" |
400 |
470 |
670 |
" |
" |
" |
|
" |
100 |
" |
500 |
550 |
790 |
" |
" |
" |
|
" |
125 |
" |
500 |
600 |
960 |
" |
" |
" |
|
" |
150 |
" |
550 |
700 |
1050 |
" |
" |
" |
|
" |
175 |
" |
550 |
750 |
1070 |
" |
" |
" |
|
" |
200 |
" |
600 |
800 |
1100 |
" |
" |
" |
|
" |
225 |
" |
600 |
850 |
1150 |
" |
" |
" |
|
" |
250 |
" |
650 |
1050 |
1200 |
" |
" |
" |
|
" |
300 |
" |
700 |
1300 |
1250 |
" |
" |
" |
|
" |
350 |
" |
750 |
1300 |
1300 |
" |
" |
" |
|
Z56０２Y-420 |
65 |
42.0 |
400 |
450 |
640 |
WCB |
≤425 |
蒸汽等 |
|
" |
80 |
" |
400 |
470 |
670 |
" |
" |
" |
|
" |
100 |
" |
500 |
550 |
790 |
" |
" |
" |
|
" |
125 |
" |
500 |
600 |
960 |
" |
" |
" |
|
" |
150 |
" |
550 |
700 |
1050 |
" |
" |
" |
|
" |
175 |
" |
550 |
750 |
1070 |
" |
" |
" |
|
" |
200 |
" |
600 |
800 |
1100 |
" |
" |
" |
|
" |
225 |
" |
600 |
850 |
1150 |
" |
" |
" |
|
" |
250 |
" |
650 |
1050 |
1200 |
" |
" |
" |
|
" |
300 |
" |
700 |
1300 |
1250 |
" |
" |
" |
|
" |
350 |
" |
750 |
1300 |
1300 |
" |
" |
" |
|
Z56０２Y-P54100V |
65 |
P5410.0 |
400 |
450 |
640 |
12Cr1MoV |
≤540 |
蒸汽 |
|
" |
80 |
" |
400 |
470 |
670 |
" |
" |
" |
|
" |
100 |
" |
500 |
550 |
790 |
" |
" |
" |
|
" |
125 |
" |
500 |
600 |
960 |
" |
" |
" |
|
" |
150 |
" |
550 |
700 |
1050 |
" |
" |
" |
|
" |
175 |
" |
550 |
750 |
1070 |
" |
" |
" |
|
" |
200 |
" |
600 |
800 |
1100 |
" |
" |
" |
|
" |
225 |
" |
600 |
850 |
1150 |
" |
" |
" |
|
" |
250 |
" |
650 |
1050 |
1200 |
" |
" |
" |
|
" |
300 |
" |
700 |
1300 |
1250 |
" |
" |
" |
|
" |
350 |
" |
750 |
1300 |
1300 |
" |
" |
" |
|
Z56０２Y-P54170V |
65 |
P5417.0 |
400 |
450 |
640 |
12Cr1MoV |
≤540 |
蒸汽 |
|
" |
80 |
" |
400 |
470 |
670 |
" |
" |
" |
|
" |
100 |
" |
500 |
550 |
790 |
" |
" |
" |
|
" |
125 |
" |
500 |
600 |
960 |
" |
" |
" |
|
" |
150 |
" |
550 |
700 |
1050 |
" |
" |
" |
|
" |
175 |
" |
550 |
750 |
1070 |
" |
" |
" |
|
" |
200 |
" |
600 |
800 |
1100 |
" |
" |
" |
|
" |
225 |
" |
600 |
850 |
1150 |
" |
" |
" |
|
" |
250 |
" |
650 |
1050 |
1200 |
" |
" |
" |
|
" |
300 |
" |
700 |
1300 |
1250 |
" |
" |
" |
|
" |
350 |
" |
750 |
1300 |
1300 |
" |
" |
" |
|
Z96０２Y-250 |
65 |
25.0 |
715 |
450 |
855 |
WCB |
≤425 |
蒸汽 |
|
" |
80 |
" |
715 |
470 |
870 |
" |
" |
" |
|
" |
100 |
" |
715 |
550 |
980 |
" |
" |
" |
|
" |
125 |
" |
785 |
600 |
1095 |
" |
" |
" |
|
" |
150 |
" |
845 |
700 |
1129 |
" |
" |
" |
|
" |
175 |
" |
845 |
750 |
1225 |
" |
" |
" |
|
" |
200 |
" |
990 |
800 |
1321 |
" |
" |
" |
|
" |
225 |
" |
990 |
850 |
1415 |
" |
" |
" |
|
" |
250 |
" |
990 |
1050 |
1556 |
" |
" |
" |
|
" |
300 |
" |
1073 |
1300 |
1763 |
" |
" |
" |
|
" |
325 |
" |
1073 |
1300 |
1848 |
" |
" |
" |
|
" |
350 |
" |
1148 |
1300 |
1933 |
" |
" |
" |
|
" |
400 |
" |
1376 |
1400 |
2050 |
" |
" |
" |
|
Z96０２Y-320 |
65 |
32.0 |
715 |
450 |
855 |
WCB |
≤425 |
蒸汽 |
|
" |
80 |
" |
715 |
470 |
870 |
" |
" |
" |
|
" |
100 |
" |
715 |
550 |
980 |
" |
" |
" |
|
" |
125 |
" |
785 |
600 |
1095 |
" |
" |
" |
|
" |
150 |
" |
845 |
700 |
1129 |
" |
" |
" |
|
" |
175 |
" |
845 |
750 |
1225 |
" |
" |
" |
|
" |
200 |
" |
990 |
800 |
1321 |
" |
" |
" |
|
" |
225 |
" |
990 |
850 |
1415 |
" |
" |
" |
|
" |
250 |
" |
990 |
1050 |
1556 |
" |
" |
" |
|
" |
300 |
" |
1073 |
1300 |
1763 |
" |
" |
" |
|
" |
325 |
" |
1073 |
1300 |
1848 |
" |
" |
" |
|
" |
350 |
" |
1148 |
1300 |
1933 |
" |
" |
" |
|
" |
400 |
" |
1376 |
1400 |
2050 |
" |
" |
" |
|
Z96０２Y-420 |
65 |
42.0 |
715 |
450 |
855 |
WCB |
≤425 |
蒸汽 |
|
" |
80 |
" |
715 |
470 |
870 |
" |
" |
" |
|
" |
100 |
" |
715 |
550 |
980 |
" |
" |
" |
|
" |
125 |
" |
785 |
600 |
1095 |
" |
" |
" |
|
" |
150 |
" |
845 |
700 |
1129 |
" |
" |
" |
|
" |
175 |
" |
845 |
750 |
1225 |
" |
" |
" |
|
" |
200 |
" |
990 |
800 |
1321 |
" |
" |
" |
|
Z96０２Y-420 |
225 |
42.0 |
990 |
850 |
1415 |
WCB |
≤425 |
蒸汽 |
|
" |
250 |
" |
990 |
1050 |
1556 |
" |
" |
" |
|
" |
300 |
" |
1073 |
1300 |
1763 |
" |
" |
" |
|
" |
325 |
" |
1073 |
1300 |
1848 |
" |
" |
" |
|
" |
350 |
" |
1148 |
1300 |
1933 |
" |
" |
" |
|
" |
400 |
" |
1376 |
1400 |
2050 |
" |
" |
" |
|
Z96０２Y-P54100V |
65 |
P5410.0 |
715 |
450 |
865 |
12Cr1MoV |
≤540 |
蒸汽 |
|
" |
80 |
" |
715 |
470 |
895 |
" |
" |
" |
|
" |
100 |
" |
845 |
550 |
980 |
" |
" |
" |
|
" |
125 |
" |
845 |
600 |
1095 |
" |
" |
" |
|
" |
150 |
" |
990 |
700 |
1129 |
" |
" |
" |
|
" |
175 |
" |
990 |
750 |
1225 |
" |
" |
" |
|
" |
200 |
" |
990 |
800 |
1321 |
" |
" |
" |
|
" |
225 |
" |
990 |
850 |
1415 |
" |
" |
" |
|
" |
250 |
" |
1073 |
1050 |
1638 |
" |
" |
" |
|
" |
300 |
" |
1148 |
1300 |
1763 |
" |
" |
" |
|
" |
325 |
" |
1148 |
1300 |
1848 |
" |
" |
" |
|
" |
350 |
" |
1209 |
1300 |
1933 |
" |
" |
" |
|
" |
400 |
" |
1376 |
1400 |
2050 |
" |
" |
" |
|
Z96０２Y-P54170V |
65 |
P5417.0 |
715 |
450 |
865 |
12Cr1MoV |
≤540 |
蒸汽 |
|
" |
80 |
" |
715 |
470 |
895 |
" |
" |
" |
|
" |
100 |
" |
845 |
550 |
980 |
" |
" |
" |
|
" |
125 |
" |
845 |
600 |
1095 |
" |
" |
" |
|
" |
150 |
" |
990 |
700 |
1129 |
" |
" |
" |
|
" |
175 |
" |
990 |
750 |
1225 |
" |
" |
" |
|
" |
200 |
" |
990 |
800 |
1321 |
" |
" |
" |
|
" |
225 |
" |
990 |
850 |
1415 |
" |
" |
" |
|
" |
250 |
" |
1073 |
1050 |
1638 |
" |
" |
" |
|
" |
300 |
" |
1148 |
1300 |
1763 |
" |
" |
" |
|
" |
325 |
" |
1148 |
1300 |
1848 |
" |
" |
" |
|
" |
350 |
" |
1209 |
1300 |
1933 |
" |
" |
" |
|
" |
400 |
" |
1376 |
1400 |
2050 |
" |
" |
" |
|
Z962Y-100I |
375 |
10.0 |
|
990 |
1940 |
15CrMo |
≤540 |
蒸汽等 |
|
" |
475 |
10.0 |
|
1200 |
2450 |
" |
" |
" |
|
Z962Y-320 |
300 |
32.0 |
|
1050 |
2025 |
25"锻钢 |
≤425 |
蒸汽等 |
|
SFZ-962B350C1 |
300 |
35.0 |
|
1050 |
2025 |
" |
" |
" |
|
Z962Y-P54140V |
125 |
P5414.0 |
|
550 |
1060 |
12Cr1MoV |
≤540 |
蒸汽等 |
|
" |
225 |
" |
|
1000 |
1556 |
" |
" |
" |
注：焊接坡口尺寸按相关标准或按用户要求执行。 | 