AZ安全認證、ISO9001認證企業。專業生產各類安全閥、概述：1 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.更多安全閥產品請瀏覽本廠www.0577valves。。ｃｏｍ我們將以的產品、優質的服務，合理的價格歡迎您的惠顧
彈簧微啟式外螺紋安全閥（A21H）剖解圖
彈簧微啟式外螺紋安全閥（A21H）主要零部件材料
NO. | Name of part | A21H-C/A21F KA21Y-C Materials | A21W-P/A21F-P KA21Y-P Materials | A21Y-R Materials |
1 | Union | 20 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
2 | Union nut | 35 | 2Cr13 | 1Cr18Ni9Ti |
3 | Nozzle | 35 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
4 | Body | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
5 | Disc | 2Cr13/2Cr13+PTFE | 1Cr18Ni9Ti/1Cr18nI9Ti+PTFE | 1Cr18Ni12Mo2Ti |
6 | Spring washer | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
7 | Spring | 50CrVA | 50CrVA Coated Teflon | 50CrVA Coated Teflon |
8 | Locking nut | Q235-A | 2Cr13 | 1Cr18Ni9Ti |
9 | Spring guide | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
10 | Adjusting nut | Q235-A | 2Cr13 | 1Cr18Ni12Mo2Ti |
| Sealing surface of material | "Y" Co Depositing slite, "H" D507 Depositing D507, "W" body | ||
彈簧微啟式外螺紋安全閥（A21H）外形尺寸和連接尺寸
型 號 | 公稱通徑（DN） | do | d | Do | M | d1 | D1 | L | L1 | ≈H |
A21H/W/F-16C/P/R | 15 | 12 | 15 | 20 | M27×1.5 | G1/2〞 | 30 | 35 | 81 | 66 |
20 | 16 | 20 | 25 | M33×1.5 | G3/4〞 | 34 | 40 | 87 | 68 | |
25 | 18 | 25 | 31 | M39×1.5 | G1〞 | 44 | 52 | 100 | 105 | |
A21Y/W-64C/P/R | 15 | 10 | 15 | 25 | M39×1.5 | G1〞 | 44 | 52 | 100 | 105 |
20 | 10 | 20 | 31 | M39×1.5 | G1〞 | 44 | 52 | 100 | 105 | |
25 | 12 | 25 | 31 | M39×1.5 | G1〞 | 44 | 52 | 100 | 105 |
