安全阀
用途:
A21F\A21H-C型适用于工作温度 200°C的空气、氨、石油气……等介质的设备或管路上。A21W-P、R型适用于工作温度 200°C有腐蚀性气体或液体的设备和管路上，作为超压保护装置。
|
零件名称 |
A21H-C/A21F材料 KA21Y-C |
A21W-P/A21F-P材料 KA21Y-P |
A21Y-R 材料 |
|
管接头 |
20 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
|
管接头螺母 |
35 |
2Cr13 |
1Cr18Ni9Ti |
|
阀座 |
35 |
1Cr18Ni19Ti |
1Cr18Ni12Mo2Ti |
|
阀体 |
2Cr13 |
1Cr18Ni19Ti |
1Cr18Ni12Mo2Ti |
|
阀瓣 |
2Cr13/2Cr13+PTFE |
1Cr18Ni19Ti/1Cr18Ni19Ti+PTFE |
1Cr18Ni12Mo2Ti |
|
弹簧座 |
2Cr13 |
1Cr18Ni19Ti |
1Cr18Ni12Mo2Ti |
|
弹簧 |
50Crva |
50crva包覆氟塑料 |
50crva包覆氟塑料 |
|
锁紧螺母 |
Q235-A |
2Cr13 |
1Cr18Ni9Ti |
|
弹簧导向垫 |
2Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
|
调节螺母 |
Q235-A |
2Cr13 |
1Cr18Ni12Mo2Ti |
|
型 号 |
公称通 径（DN） |
do |
d |
Do |
M |
d1 |
D1 |
L |
L1 |
≈H |
|
KA21-16c A21H-16c A21H-40 A21W-16P A21W-40P KA21-16P |
15 |
12 |
15 |
20 |
M27×1.5 |
G1/2″ |
30 |
35 |
76 |
66 |
|
20 |
16 |
20 |
25 |
M33×1.5 |
G3/4″ |
34 |
40 |
87 |
68 |
|
|
25 |
18 |
25 |
31 |
M39×1.5 |
G1″ |
40 |
50 |
100 |
105 |
|
|
A21Y-64 A21Y-64P A21Y-100 A21Y-100P |
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 |
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