A28H型安全阀适用于工作温度≤200℃的空气、蒸汽、水、氮氢混合气等介质的设备或管路上，A28Y-P/10R8安全阀适用于工作温度≤200℃有腐蚀性介质的设备或管路上，作为超压保护装置。
Series
A28H-10 A28Y-10P A28Y-10R8 A28Y-25R8 A28Y-40R8 A28H-16 A28Y-16P A28Y-16R8 A28Y-25R8 A28Y-40R8
| 主要零部件材料 Explanation of materials for main parts |
| NO. |
Name of part |
A28H Materials |
A28Y-P Materials |
A28Y-R8 Materials |
| 1 |
Body |
HT200 |
ZG1Cr18Ni9Ti |
CF8M |
| 2 |
Nozzle |
35 |
ZG1Cr18Ni9Ti |
CF8M |
| 3 |
Adjusting ring |
2Cr13 |
1Cr18Ni9Ti |
316 |
| 4 |
Disc |
2Cr13 |
1Cr18Ni9Ti |
316 |
| 5 |
Spring |
50CrVA |
50CrVA Coated Teflon |
50CrVA Coated Teflon |
| 6 |
Stem |
2Cr13 |
2Cr13 |
316 |
| 7 |
Adjusting bolt |
45 |
2Cr13 |
316 |
| 8 |
Cap |
ZG200-400 |
ZG200-400 |
CF8M |
| |
Sealing surface of material |
D507
Depositing D507 |
Co
Depositing stellite |
| 10 |
Adjusting nut |
Q235-A |
2Cr13 |
1Cr18Ni12Mo2Ti |
| |
Sealing surface of material |
"Y" Co Depositing stellite, "H" D507 Depositing D507, "W" body |
| 外形尺寸和连接尺寸 Dimensions (mm) |
Nominal diameter
DN (mm) |
Dimensions (mm) |
| do |
Rc |
G |
L |
L1 |
H |
| 15 |
10 |
1/2" |
3/4" |
37 |
62 |
189 |
| 20 |
12 |
3/4" |
1" |
40 |
65 |
196 |
| 25 |
15 |
1" |
11/ "
4 |
45 |
72 |
277 |
| 32 |
20 |
11/ " |
1 |
55 |
85 |
312 |
| 40 |
25 |
11/ " |
2" |
67 |
100 |
322 |
| 50 |
32 |
2" |
21/ "
2 |
76 |
112 |
348 |
| 65 |
40 |
21/ " |
3" |
110 |
135 |
370 |
| 80 |
50 |
3" |
4" |
110 |
145 |
410 | |
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