截止閥的啟閉件是塞形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運動。閥桿的運動形式，有升降桿式（閥桿升降，手輪不升降），也有升降旋轉桿式（手輪與閥桿一起旋轉升降，螺母設在閥體上）。截止閥只適用于全開和全關，不允許作調(diào)節(jié)和節(jié)流。
保溫截止閥具有保溫,保冷特性,適用于石油,化工,冶金,制藥等行業(yè).
| BJ45W夾套保溫截止閥主要部件材質(zhì) |
| 產(chǎn)品型號 | 閥體、閥蓋 | 閥 瓣 | 填 料 | ||
| BJ45W-25P、BJ45W-40P、BJ45W-64P | ZG1Cr18Ni9Ti | 1Cr18Ni9Ti | PTFE | ||
| 聚四乙稀 | |||||
| BJ45W-25P/R、BJ45W-40P、BJ45W-64P | ZG1Cr18Ni12Mo2Ti | 1Cr18Ni12Mo2Ti | PTFE | ||
| 聚四乙稀 | |||||
| BJ45W夾套保溫截止閥主要性能規(guī)范 |
| 型號 | 公稱壓力PN(Mpa) | 試驗壓力 | 適用溫度 | 適用介質(zhì) | 保溫套壓力 | |
| shell | seal | |||||
| BJ45W-25P | 2.5 | 3.75 | 2.75 | ≤200 | Acetic urea 1 |
≤1.3 |
| BJ45W-40P | 4.0 | 6.0 | 4.4 | |||
| BJ45W-64P | 6.4 | 9.0 | 6.6 | Acetic urea | ||
| BJ45W-25P | 2.5 | 3.75 | 2.75 | |||
| BJ45W-40P | 4.0 | 6.0 | 4.4 | |||
| BJ45W-64P | 6.4 | 9.0 | 6.6 | |||
| BJ45W夾套保溫截止閥主要尺寸表 |
| 公稱壓力 | 公稱通徑 | 尺 寸 | |||||||||||||
| L | D | D1 | D2 | D3 | B1 | Fo | b | D6 | 3-G | Z-Φd | H | H1 | Do | ||
| 2.5 4.0 |
15 | 170 | 105 | 75 | 55 | 35 | 8 | 4 | 16 | 51 | 3/8 | 4-Φ14 | 250 | 262 | 120 |
| 20 | 190 | 115 | 115 | 65 | 42 | 8 | 4 | 16 | 58 | 3/8 | 4-Φ14 | 292 | 308 | 140 | |
| 25 | 210 | 135 | 135 | 78 | 50 | 8 | 4 | 18 | 66 | 3/8 | 4-Φ18 | 340 | 375 | 160 | |
| 32 | 230 | 145 | 145 | 85 | 60 | 8 | 4 | 18 | 76 | 3/8 | 4-Φ18 | 338 | 375 | 160 | |
| 2.5 4.0 |
40 | 260 | 160 | 125 | 100 | 72 | 8 | 4 | 20 | 65 | 1/2 | 4-Φ18 | 360 | 386 | 160 |
| 50 | 300 | 180 | 145 | 120 | 94 | 8 | 4 | 22 | 88 | 1/2 | 8-Φ18 | 410 | 450 | 240 | |
| 65 | 340 | 195 | 160 | 130 | 105 | 8 | 4 | 22 | 110 | 1/2 | 8-Φ18 | 440 | 485 | 240 | |
| 80 | 380 | 230 | 190 | 160 | 128 | 11 | 4.5 | 24 | 121 | 1/2 | 8-Φ23 | 540 | 600 | 280 | |
| 100 | 430 | 270 | 220 | 188 | 154 | 11 | 4.5 | 28 | 150 | 1/2 | 8-Φ25 | 560 | 625 | 320 | |
| 125 | 300 | 250 | 218 | 182 | 11 | 4.5 | 30 | 176 | 1/2 | 8-Φ25 | 625 | 737 | 360 | ||
| 150 | 550 | 330 | 280 | 248 | 2 | 11 | 4.5 | 32 | 204 | 1/2 | 12-Φ25 | 720 | 790 | 360 | |
| 6.4 | 25 | 235 | 160 | 125 | 8 | 50 | 8 | 4 | 22 | 1/2 | 4-Φ18 | 375 | 375 | 160 | |
| 32 | 260 | 165 | 125 | 88 | 60 | 8 | 4 | 24 | 1/2 | 4-Φ23 | 383 | 383 | 160 | ||
| 50 | 300 | 200 | 160 | 130 | 4 | 26 | 110 | 1/2 | 8-Φ23 | 450 | 450 | 240 | |||
| 65 | 340 | 210 | 170 | 140 | 4 | 30 | 121 | 1/2 | 8-Φ23 | 510 | 510 | 240 | |||
| 100 | 430 | 270 | 220 | 188 | 154 | 154 | 4.5 | 36 | 1/2 | 8-Φ25 | 670 | 670 | 400 | ||
| 100 | 415 | 300 | 250 | 218 | 4.5 | 32 | 1/2 | 8-Φ25 | 670 | 670 | 400 | ||||
