3、啟閉壓差≤15%
4、選用優質的彈簧鋼,保證彈簧的壽命和穩定性
5、平面結構的閥瓣和閥座易于維修和重新加工
【型號】
A21F-16C
KA21F-16C
KA21F-16P
A21H-16C(25,40,64,100)
A21Y(H,W)-16P(25P,40P,64P,100P)
A21Y(H,W)-16R(25R,40R,64R,100R)
A21Y(H,W)-16R3(25R3,40R3,64R3,100R3)
【用途】
A21F微啟式安全閥是一種用于無毒無害及非易燃易爆氣體或液體介質的管道及容器等設備作為超壓保護的zui終安全保護裝置,該類型安全閥采用彈簧直接載荷式,螺紋連接,閥蓋封閉式結構。
【整定壓力等級】
公稱壓力(MPa) | 彈簧整定壓力等級(MPa) | |||||||
1.6 | 0.06~0.1 | 0.1~0.16 | 0.16~0.25 | 0.4~0.6 | 0.6~0.8 | 0.8~1.0 | 1.0~1.3 | 1.3~1.6 |
2.5 | 1.3~1.6 | 1.6~2.0 | 2.0~2.5 | | | | | |
4.0 | 1.3~1.6 | 1.6~2.0 | 2.0~2.5 | 2.5~3.2 | 3.2~4.0 | | | |
6.4 | 2.5~3.2 | 3.2~4.0 | 4.0~5.0 | 5.0~6.4 | | | | |
10.0 | 4.0~5.0 | 5.0~6.4 | 6.4~8.0 | 8.0~10.0 | | | | |
16.0 | 10.0~13.0 | 13.0~16.0 | | | | | | |
32.0 | 16.0~19.0 | 19.0~22.0 | 22.0~29.0 | 29.0~32.0 | | | | |
【性能參數】
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"型為本體 |
【主要外形連接尺寸】
DN15~DN25
型號 | 公稱通徑 | do | d | Do | M | d1 | D1 | L | L1 | ≈H |
1.6MPa | 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 | |
6.4MPa | 15 | 10 | 15 | 25 | M39×1.5 | G1/2" | 44 | 50 | 100 | 66 |
20 | 10 | 20 | 31 | M39×1.5 | G3/4" | 44 | 50 | 100 | 68 | |
25 | 12 | 25 | 31 | M39×1.5 | G1" | 44 | 50 | 100 | 105 | |
16.0MPa | 15 | 8 | 20 | / | M24×2 | G1/2" | 44 | 50 | 100 | 261 |
20 | 8 | 25 | / | M33×2 | G3/4" | 44 | 50 | 100 | 261 | |
25 | 8 | 28 | / | M36×2 | G1" | 44 | 50 | 100 | 285 |
DN32~DN80(1.6MPa,2.5MPa,4.0MPa)
公稱通徑 | 尺 寸(mm) | |||||
DN(mm) | do | R | L | L1 | G | H |
32 | 20 | 1-1/4” | 50 | 85 | 1-1/4" | 312 |
40 | 25 | 1-1/2“ | 55 | 100 | 1-1/2“ | 322 |
50 | 32 | 2” | 67 | 112 | 2 | 348 |
65 | 40 | 2-1/2“ | 76 | 135 | 2-1/2“ | 370 |
80 | 50 | 3” | 110 | 145 | 3" | 410 |