| A21F、A21H-C型適(shi)用(yong)(yong)于工作(zuo)溫(wen)(wen)度≤200℃的空(kong)氣(qi)、氨、石(shi)油氣(qi)……等介質(zhi)的設備或(huo)管(guan)路(lu)上(shang)。A21W-P、R型適(shi)用(yong)(yong)于溫(wen)(wen)度≤200℃有腐蝕性的氣(qi)體或(huo)液體的設備或(huo)管(guan)路(lu)上(shang)，作(zuo)為超壓保護裝置。KA21Y型適(shi)用(yong)(yong)于溫(wen)(wen)度≤100℃的液化(hua)石(shi)油氣(qi)等。 |
彈簧微啟式外螺紋安全閥主要零部件材料：
NO. | 零件名稱 | A21H-C/A21F材料 | A21W-P/A21F-P材料(liao) | 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(fa)瓣 | 2Cr13/2Cr13+PTFE | 1Cr18Ni9Ti/1Cr18Ni9Ti+PTFE | 1Cr18Ni12Mo2Ti | 6 | 彈簧座 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 7 | 彈(dan)簧(huang) | 50CrVA | 50CrVA包覆氟塑(su)料 | 50CrVA包覆氟(fu)塑料 | 8 | 鎖(suo)緊(jin)螺母 | Q235-A | ZG230-450 | 1Cr18Ni9Ti | 9 | 彈(dan)簧(huang)導向墊(dian) | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 10 | 調(diao)節螺母 | Q235-A | 2Cr13 | 1Cr18Ni12Mo2Ti |
| 密封面材(cai)料 | "Y"型(xing)堆焊Co基硬質(zhi)合(he)金(jin),"H"型(xing)堆焊D507,"W"型(xing)為閥門本體 |
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彈簧微啟式外螺紋安全閥外形尺寸和連接尺寸：
型(xing)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 |
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