A21F、A21H、A21Y彈簧微啟式外螺紋**閥
A21F、A21H-C型適用于工作溫度≤200℃的空氣、氨、石油氣……等介質的設備或管路上。A21W-P、R型適用于溫度≤200℃有腐蝕性的氣體或液體的設備或管路上,作為超壓保護裝置。KA21Y型適用于溫度≤100℃的液化石油氣等。
主要零部件材料
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 |
彈簧導向墊 |
2Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
10 |
調節(jié)螺母 |
Q235-A |
2Cr13 |
1Cr18Ni12Mo2Ti |
|
密封面材料 |
"Y"型堆焊Co基硬質合金,"H"型堆焊D507,"W"型為閥門本體 |
■外形尺寸和連接尺寸
型號 |
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 |