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a42y-160/320适用于工作温度≤200℃空气、氮氢混合气等介质的设备或管路上。a42y-160p/320p、a42y-160r/320r适用于工作温度≤200℃有腐蚀性介质的设备或管路上，作为超压保护装置。
连接法兰按jb/t2769-92的标准。
主要零部件材料：
| no. |
零件名称 |
a42y-160 a42y-320 材料 |
a42y-160p a42y-320p 材料 |
a42y-160r a42y-320r 材料 |
| 1 |
法兰 |
35/35crmoa |
2cr13 |
1cr18ni12mo2ti |
| 2 |
阀座 |
2cr13 |
1cr18ni9ti |
1cr18ni12mo2ti |
| 3 |
阀体 |
40 |
1cr18ni9ti |
1cr18ni12mo2ti |
| 4 |
调节圈 |
2cr13 |
1cr18ni9ti |
1cr18ni12mo2ti |
| 5 |
阀瓣 |
2cr13 |
1cr18ni9ti |
1cr18ni12mo2ti |
| 6 |
反冲盘 |
2cr13 |
1cr18ni9ti |
1cr18ni12mo2ti |
| 7 |
导向套 |
2cr13 |
1cr18ni9ti |
1cr18ni12mo2ti |
| 8 |
阀盖 |
zg230-450 |
zg230-450 |
zg230-450 |
| 9 |
阀杆 |
2cr13 |
1cr18ni9ti |
1cr18ni9ti |
| 10 |
弹簧 |
50crva |
50crva包覆氟塑料 |
50crva包覆氟塑料 |
| 11 |
调整螺杆 |
45 |
2cr13 |
2cr13 |
| 12 |
阀帽 |
zg200-400 |
zg200-400 |
zg200-400 |
|
|
密封面材料 |
堆焊co基硬质合金 |
||
外形尺寸和连接尺寸：
| 型号 |
公称通径 |
do |
d |
m |
k |
d |
z-ød |
b |
d1 |
m1 |
k1 |
d1 |
z1-ød1 |
b1 |
l |
l1 |
≈h |
| a42y-160 |
15 |
8 |
20 |
m34×2 |
60 |
95 |
3-18 |
20 |
29 |
m42×2 |
80 |
115 |
4-18 |
22 |
95 |
100 |
220 |
| 20 |
8 |
27 |
m33×2 |
68 |
105 |
3-18 |
20 |
29 |
m42×2 |
80 |
115 |
4-18 |
22 |
95 |
100 |
220 |
|
| 25 |
14 |
28 |
m33×2 |
68 |
105 |
3-18 |
20 |
50 |
m64×3 |
115 |
165 |
6-26 |
32 |
150 |
150 |
280 |
|
| 32 |
15 |
37 |
m42×2 |
80 |
115 |
4-18 |
22 |
50 |
m64×3 |
115 |
165 |
6-26 |
32 |
150 |
150 |
390 |
|
| 40 |
20 |
47 |
m52×2 |
115 |
165 |
6-26 |
28 |
65 |
m80×3 |
145 |
200 |
6-29 |
40 |
180 |
180 |
495 |
|
| 50 |
25 |
59 |
m64×3 |
115 |
165 |
6-26 |
32 |
80 |
m100×3 |
170 |
225 |
6-33 |
50 |
165 |
165 |
400 |
|
| a42y-320 |
15 |
8 |
27 |
m33×2 |
68 |
105 |
3-18 |
20 |
29 |
m42×2 |
80 |
115 |
4-18 |
22 |
95 |
100 |
220 |
| 20 |
8 |
30 |
m33×2 |
75 |
110 |
3-18 |
22 |
29 |
m42×2 |
80 |
115 |
4-18 |
22 |
95 |
100 |
220 |
|
| 25 |
14 |
35 |
m42×2 |
80 |
115 |
4-18 |
22 |
50 |
m64×3 |
115 |
165 |
6-26 |
32 |
150 |
150 |
280 |
|
| 32 |
15 |
41 |
m48×2 |
95 |
135 |
4-22 |
25 |
50 |
m64×3 |
115 |
165 |
6-26 |
32 |
150 |
150 |
390 |
|
| 40 |
20 |
58 |
m64×3 |
115 |
165 |
6-26 |
32 |
65 |
m80×3 |
145 |
200 |
6-29 |
40 |
180 |
180 |
495 |
|
| 50 |
25 |
70 |
m80×3 |
145 |
200 |
6-29 |
40 |
80 |
m100×3 |
170 |
225 |
6-33 |
50 |
165 |
165 |
400 |
|
| a42y-400 |
32 |
15 |
41 |
m48×2 |
95 |
135 |
4-22 |
25 |
50 |
m64×3 |
115 |
165 |
6-26 |
32 |
150 |
150 |
397 |
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