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一、A21F弹簧微启式外螺纹安全阀概述9/strong>
A21F、A21H-C型适用于工作温?/span>≣/span>200ℂ/span>的空气、氨、石油气…?/span>等介质的设备或管路上。A21W-P、R型适用于温?/span>≣/span>200ℂ/span>有腐蚀性的气体或液体的设备或管路上,作为超压保护装置。KA21Y型适用于温?/span>≣/span>100ℂ/span>的液化石油气等、/span>
二?span style="font-size: 13px">A21F弹簧微启式外螺纹安全阀结构图片9/strong>
三、A21F弹簧微启式外螺纹安全阀主要零部件材料:
NO. |
零件名称 |
A21H-C/A21F材料 |
A21W-P/A21F-P材料 |
A21Y-R材料 |
1 |
管接夳/span> |
20 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
2 |
管接头螺毌/span> |
35 |
2Cr13 |
1Cr18Ni9Ti |
3 |
阀?/span> |
35 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
4 |
阀佒/span> |
2Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
5 |
阀瓢/span> |
2Cr13/2Cr13+PTFE |
1Cr18Ni9Ti/1Cr18Ni9Ti+PTFE |
1Cr18Ni12Mo2Ti |
6 |
弹簧?/span> |
2Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
7 |
弹簧 |
50CrVA |
50CrVA包覆氟塑斘/span> |
50CrVA包覆氟塑斘/span> |
8 |
锁紧螺母 |
Q235-A |
ZG230-450 |
1Cr18Ni9Ti |
9 |
弹簧导向?/span> |
2Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
10 |
调节螺母 |
Q235-A |
2Cr13 |
1Cr18Ni12Mo2Ti |
密封面材斘/span> |
"H"型堆焊D507,"W"型为阀门本体body,"Y"型堆焊Co基硬质合釐/span> |
四、A21F弹簧微启式外螺纹安全阀外型尺寸和连接尺寸:
型号 |
公称通径 |
do |
d |
Do |
M |
d1 |
D1 |
L |
L1 |
≇/span>H |
KA21-16C |
15 |
12 |
15 |
20 |
M27×1.5 |
G1/2" |
30 |
35 |
76 |
66 |
20 |
16 |
20 |
25 |
M33×1.5 |
G3/4" |
35 |
40 |
87 |
68 |
|
25 |
18 |
25 |
31 |
M39×1.5 |
G1" |
40 |
50 |
100 |
105 |
|
A21Y-64 |
15 |
10 |
15 |
25 |
M39×1.5 |
G1" |
44 |
50 |
100 |
66 |
20 |
10 |
20 |
31 |
M39×1.5 |
G1" |
44 |
50 |
100 |
68 |
|
25 |
12 |
25 |
31 |
M39×1.5 |
G1" |
44 |
50 |
100 |
105 |
|
A21W-160/160P |
15 |
8 |
20 |
/ |
M24×2 |
G1" |
44 |
50 |
100 |
261 |
20 |
8 |
25 |
/ |
M33×2 |
G1" |
44 |
50 |
100 |
261 |
|
25 |
8 |
28 |
/ |
M36×2 |
G1" |
44 |
50 |
100 |
285 |
永嘉