彈簧微啟式外螺紋安全閥A21F、A21H-C型適用于工作溫度≤200℃的空氣。氨氣、石油氣......等介質(zhì)設(shè)備管路上。A21W-P、R型適用于溫度≤200℃有腐蝕性的氣體或者液體的設(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。
外螺紋安全閥具體型號(hào)
A21F-16C 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
外螺紋主要零部件材質(zhì)
零部件名稱 | A21H-C/A21F/KA21Y-C 材料 | A21W-P/A21F-P/KA21Y-P 材料 | A21Y-R材料 |
管接頭 | 20 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
管接頭螺母 | 35 | 2Cr13 | Cr18Ni9Ti |
閥座 | 35 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
閥體 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
閥瓣 | 2Cr13/2Cr13+PTFE | 1Cr18Ni9Ti/1Cr18Ni9Ti+PTFE | 1Cr18Ni12Mo2Ti |
彈簧座 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
彈簧 | 50CrVA | 50CrVA包覆氟塑料 | 50CrVA包覆氟塑料 |
鎖緊螺母 | Q235-A | 2Cr13 | 1Cr18Ni9Ti |
彈簧導(dǎo)向墊 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
調(diào)節(jié)螺母 | Q235-A | 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 |
外螺紋外形尺寸
型號(hào) | 公稱通徑 | do | d | Do | M | d1 | D1 | L | L1 | ≈H |
(1) KA21Y-16C/A21H-16C | DN15 | 12 | 15 | 20 | M27*1.5 | G1/2" | 30 | 35 | 76 | 66 |
(1) A21H-40/A21W-16P | DN20 | 16 | 20 | 25 | M33*1.5 | G3/4" | 34 | 40 | 87 | 68 |
(1) A21W-40/KA21Y-16P | DN25 | 18 | 25 | 31 | M39*1.5 | G1" | 40 | 50 | 100 | 105 |
(2)A21Y-64 | DN15 | 10 | 15 | 25 | M39*1.5 | G1" | 44 | 50 | 100 | 66 |
(2) A21Y-100P | DN20 | 10 | 20 | 31 | M39*1.5 | G1" | 44 | 50 | 100 | 68 |
(2)A21Y-64P A21Y-100 | DN25 | 12 | 25 | 31/ | M39*1.5 | G1" | 44 | 50 | 100 | 105 |
(3)A21W-160/160P | DN15 | 8 | 20 | / | M24*2 | G1" | 44 | 50 | 100 | 261 |
(3)A21W-160/160P | DN20 | 8 | 25 | / | M33*2 | G1" | 44 | 50 | 100 | 261 |
(3)A21W-160/160P | DN25 | 8 | 28 | / | M36*2 | G1" | 44 | 50 | 100 | 265 |