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詳細介紹
DQ41F低溫法蘭球閥分為低溫浮動球和低溫固定球兩類,用于截斷或接通管路中的低溫介質(zhì),介質(zhì)***低溫度不得低于-196度。
低溫球閥 執(zhí)行標準
| 設(shè)計與制造 | 結(jié)構(gòu)長度 | 法蘭尺寸 | 壓力-溫度 | 試驗-檢驗 |
| GB122237 | GB12221 | GB9113 JB79 | GB9131 | GB/T13927 JB/T9092 |
低溫球閥 壓力試驗
| 公稱壓力 | 1.6 | 2.5 | 4.0 |
| 強度試驗 | 2.4 | 3.8 | 6.0 |
| 水密封試驗 | 1.8 | 2.8 | 4.4 |
| 氣密封試驗 | 0.4-0.7 | ||
低溫球閥 主要零件材料
| 閥體 | WCB | ZG1Cr18Ni9Ti | CF8 | CF3 | ZG1Cr18Ni12Mo2Ti | CF8M | CF3M |
| 球體 閥桿 | 2Cr13 | 1Cr18Ni9Ti | 304 | 304L | 1Cr18Ni12Mo2Ti | 316 | 316L |
| 閥 座 | 聚四氟乙烯PTFE 加坡纖增強聚四氟乙烯PTFE+Glass 對位聚笨PPL | ||||||
| 墊片 | 聚四氟乙烯PTFE 不銹鋼/柔性石墨 齒形墊片 | ||||||
| 閥桿座 | 聚四氟乙烯PTFE 不銹鋼/柔性石墨 | ||||||
| 填料 | 聚四氟乙烯PTFE 增強柔性石墨 | ||||||
| 填料壓蓋 | WCB | 1Cr18Ni9Ti | 304 | 304L | 1Cr18Ni12Mo2Ti | 316 | 316L |
| 溫度 | -40～150 | ||||||
| 介質(zhì) | 水 蒸汽 油品 | 硝酸類 | 強氧化介質(zhì) | 醋酸類 | 尿素類 | ||
低溫球閥 主要外形尺寸
| 1.6MPa | DN | L | D | D1 | D2 | b | n-φd | H | D0 |
| 凸面法蘭 RF DQ41 16C 16P 16R | 15 | 130 | 95 | 65 | 45 | 14 | 4-14 | 78 | 140 |
| 20 | 140 | 105 | 75 | 55 | 14 | 4-14 | 84 | 160 | |
| 25 | 150 | 115 | 85 | 65 | 14 | 4-14 | 95 | 180 | |
| 32 | 165 | 135 | 100 | 78 | 16 | 4-18 | 150 | 250 | |
| 40 | 180 | 145 | 110 | 85 | 16 | 4-18 | 150 | 300 | |
| 50 | 200 | 160 | 125 | 100 | 18 | 4-18 | 170 | 350 | |
| 65 | 220 | 180 | 145 | 120 | 20 | 4-18 | 195 | 350 | |
| 80 | 250 | 195 | 160 | 135 | 20 | 8-18 | 215 | 400 | |
| 100 | 280 | 215 | 180 | 155 | 20 | 8-18 | 250 | 500 | |
| 125 | 320 | 245 | 210 | 185 | 22 | 8-18 | 265 | 600 | |
| 150 | 360 | 280 | 240 | 210 | 24 | 8-23 | 270 | 800 | |
| 200 | 400 | 335 | 295 | 265 | 26 | 12-23 | 330 | 1200 | |
| 2.5MPa | 15 | 130 | 95 | 65 | 45 | 16 | 4-14 | 103 | 140 |
| 凸面法蘭 RF DQ41 25 25P 25R | 20 | 140 | 105 | 75 | 55 | 16 | 4-14 | 112 | 160 |
| 25 | 150 | 115 | 85 | 65 | 16 | 4-14 | 123 | 180 | |
| 32 | 165 | 135 | 100 | 78 | 18 | 4-18 | 150 | 250 | |
| 40 | 180 | 145 | 110 | 85 | 18 | 4-18 | 156 | 300 | |
| 50 | 200 | 160 | 125 | 100 | 20 | 8-18 | 172 | 350 | |
| 65 | 220 | 180 | 145 | 120 | 22 | 8-18 | 197 | 350 | |
| 80 | 250 | 195 | 160 | 135 | 22 | 8-23 | 222 | 400 | |
| 100 | 280 | 230 | 190 | 160 | 24 | 8-23 | 253 | 500 | |
| 125 | 320 | 270 | 220 | 188 | 28 | 8-25 | 275 | 600 | |
| 150 | 360 | 300 | 250 | 218 | 30 | 8-25 | 286 | 800 | |
| 200 | 400 | 360 | 310 | 278 | 34 | 12-25 | 340 | 1200 |
| 4.0MPa | DN | L | D | D1 | D2 | D6 | b | n-φd | H | D0 |
| 凹凸法蘭 MFM DQ41 40 40P 40R | 15 | 130 | 95 | 65 | 45 | 40 | 16 | 4-14 | 103 | 140 |
| 20 | 140 | 105 | 75 | 55 | 51 | 16 | 4-14 | 112 | 160 | |
| 25 | 150 | 115 | 85 | 65 | 58 | 16 | 4-14 | 123 | 160 | |
| 32 | 180 | 135 | 100 | 78 | 66 | 18 | 4-18 | 150 | 250 | |
| 40 | 200 | 145 | 110 | 85 | 76 | 18 | 4-18 | 156 | 250 | |
| 50 | 220 | 160 | 125 | 100 | 88 | 20 | 4-18 | 172 | 350 | |
| 65 | 250 | 180 | 145 | 120 | 110 | 22 | 8-18 | 197 | 350 | |
| 80 | 280 | 195 | 160 | 135 | 121 | 22 | 8-18 | 222 | 450 | |
| 100 | 320 | 230 | 190 | 160 | 150 | 24 | 8-23 | 253 | 450 | |
| 125 | 400 | 270 | 220 | 188 | 176 | 28 | 8-25 | 275 | 600 | |
| 150 | 400 | 300 | 250 | 218 | 204 | 30 | 8-25 | 286 | 800 | |
| 200 | 550 | 375 | 320 | 282 | 260 | 38 | 12-30 | 340 | 1200 | |
| 6.4MPa | 15 | 165 | 105 | 75 | 55 | 40 | 18 | 4-14 | 105 | 140 |
| 凹凸法蘭 MFM DQ41 64 64P 64R | 20 | 190 | 125 | 90 | 68 | 51 | 20 | 4-18 | 125 | 160 |
| 25 | 216 | 135 | 100 | 78 | 58 | 22 | 4-18 | 135 | 250 | |
| 32 | 229 | 150 | 110 | 82 | 66 | 24 | 4-23 | 150 | 350 | |
| 40 | 241 | 165 | 125 | 95 | 76 | 24 | 4-23 | 165 | 350 | |
| 50 | 292 | 175 | 135 | 105 | 88 | 26 | 4-23 | 175 | 450 | |
| 65 | 330 | 200 | 160 | 130 | 110 | 28 | 8-23 | 200 | 450 | |
| 80 | 356 | 210 | 170 | 140 | 121 | 30 | 8-23 | 210 | 600 | |
| 100 | 432 | 250 | 200 | 168 | 150 | 32 | 8-25 | 250 | 700 | |
| 125 | 508 | 295 | 240 | 202 | 176 | 36 | 8-30 | 295 | 1100 | |
| 150 | 559 | 340 | 280 | 240 | 204 | 38 | 8-34 | 340 | 1500 |
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