彈簧微啟式外螺紋安全閥
【產(chǎn)品概述】
A21F、A21H-C型適用于工作溫度≤200℃的空氣、氨、石油氣……等介質(zhì)的設(shè)備或管路上。A21W-P、R型適用于溫度≤200℃有腐蝕性的氣體或液體的設(shè)備或管路上，作為超壓保護(hù)裝置。KA21Y型適用于溫度≤100℃的液化石油氣等。
A21H-16C A21H-40 A21H-64 A21Y-100 A21H-160
A21W-16P A21W-40P A21F-40P A21W-64P A21W-100P A21W-160P
KA21Y-16C KA21Y-16P A21Y-16R A21Y-40R A21Y-64R A21Y-100R A21Y-160R
【主要零部件】
| NO. |
零件名稱 |
A21H-C/A21F材料 |
A21W-P/A21F-P材料 |
A21Y-R材料 |
| 1 |
管接頭 |
20 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
| 2 |
管接頭螺母 |
35 |
2Cr13 |
1Cr18Ni9Ti |
| 3 |
閥座 |
35 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
| 4 |
閥體 |
2Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
| 5 |
閥瓣 |
2Cr13/2Cr13+PTFE |
1Cr18Ni9Ti/1Cr18Ni9Ti+PTFE |
1Cr18Ni12Mo2Ti |
| 6 |
彈簧座 |
2Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
| 7 |
彈簧 |
50CrVA |
50CrVA包覆氟塑料 |
50CrVA包覆氟塑料 |
| 8 |
鎖緊螺母 |
Q235-A |
ZG230-450 |
1Cr18Ni9Ti |
| 9 |
彈簧導(dǎo)向墊 |
2Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
| 10 |
調(diào)節(jié)螺母 |
2Cr13 |
1Cr18Ni12Mo2Ti |
| |
密封面材料 |
'Y'型堆焊Co基硬質(zhì)合金,'H'型堆焊D507,'W'型為閥門本體 |
【外形和連接尺寸】
| 型號(hào) |
公稱通徑 |
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' |
35 |
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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