直流式保温截止阀
BJ45W直流式保温截止阀的保温夹套焊装于阀门的两法兰之间，阀门的侧面、底部设置有保温夹套的两个连接口。直流保温截止阀特别适用于化工、化肥行业的管路上，夹套内涵入蒸汽能防止介质结晶。广泛应用于石油、化工、冶金、制药等各类系统中，以输送常温下会凝固的高粘度介质。
性能规范
| 型号 | 公称压力 Mpa | 试验压力(MPa) | 工作温度 （℃） | 适用介质 | 工作蒸汽压力（Mpa） | |
| 壳体 | 密封（水） | |||||
| BJ45W-16P | 1.6 | 2.4 | 1.8 | ≤350 | 硝酸类 | ≤1.0 |
| BJ45W-25P | 2.5 | 3.75 | 2.75 | |||
| BJ45W-40P | 4.0 | 6.0 | 4.4 | |||
| BJ45W-16RL | 1.6 | 2.4 | 1.8 | 醋酸类/尿素类 | ||
| BJ45W-25RL | 2.5 | 3.75 | 2.75 | |||
| BJ45W-40RL | 4.0 | 6.0 | 4.4 | |||
零件材质
| 零件名称LTEM | ZG1CR18NI9TI系列 | ZGOOCR18NI10系列 | ZG1Cr18Ni12MO2Ti系列 | ZGOOCR17NI14MO2系列 | WCB系列 |
| 阀体/阀盖世BODY/CAP | ZG1CR18NI9TI | ZGOOCR18NI10 | ZG1Cr18Ni12MO2Ti | ZGOOCR17NI14MO2 | WCB |
| 闸板WEDGE | ZG1CR18NI9TI | ZGOOCR18NI10 | ZG1Cr18Ni12MO2Ti | ZGOOCR17NI14MO2 | 1Cr13 |
| 阀杆STEM | 1CR18NI9TI | 00cr18ni10 | 1CR18NI12MOTI | OOCR17NI14MO | 1Cr13 |
| 填料PACKING | PTFE纺织 | PTFE纺织 | PTFE纺织 | PTFE纺织 | 石墨 GRAPHITE |
| 垫片GASKET | 304L+PTFE | 304L+PTFE | 316L+PTFE | 316L+PTFE | 石墨+304 GRAPHITE+304 |
| 压盖GLAND FLANGE | ZG1CR18NI9TI | ZG00CR18ni10 | ZG1Cr18Ni12MO2Ti | ZGOOCR17NI14MO2 | WCB |
| 填料压环 STUFFING RING | 1CR18NI9TI | 00CR18NI10 | 1Cr18NI12MOTI | OOCR17NI14MO | 1Cr13 |
| 螺栓BOLT | 1cr17ni2 | 1CR17NI2 | 1Cr17NI2 | 1Cr17Ni2 | 35CrMoA |
| 螺母NUT | 1cr18ni9ti | 1CR18NI9TI | 1Cr18NI9ti | 1Cr18NI9ti | 45 |
连接尺寸
| PN(MPa) | DN(mm) | 尺寸(mm) | 重量 | |||||||||
| L | L1 | H | 3-G | D | D1 | D2 | b | Z-φd | Do | kg | ||
| 2.5 | 15 | 200 | 50 | 210 | 1-2 | 105 | 75 | 55 | 16 | 4--φ14 | 120 | 14 |
| 20 | 220 | 50 | 240 | 1-2 | 115 | 85 | 65 | 16 | 4--φ14 | 140 | 18 | |
| 25 | 220 | 50 | 250 | 1-2 | 135 | 100 | 78 | 18 | 4--φ18 | 160 | 25 | |
| 32 | 250 | 55 | 270 | 1-2 | 145 | 110 | 85 | 18 | 4--φ18 | 160 | 30 | |
| 40 | 270 | 60 | 310 | 1-2 | 160 | 125 | 100 | 20 | 4--φ18 | 160 | 36 | |
| 50 | 300 | 60 | 330 | 3-4 | 180 | 145 | 120 | 22 | 8-φ18 | 240 | 40 | |
| 65 | 350 | 65 | 360 | 3-4 | 195 | 160 | 135 | 22 | 8-φ18 | 240 | 54 | |
| 80 | 380 | 70 | 400 | 3-4 | 230 | 190 | 160 | 24 | 8-φ23 | 280 | 70 | |
| 100 | 430 | 75 | 480 | 1 | 270 | 220 | 188 | 28 | 8-φ25 | 320 | 100 | |
| 125 | 490 | 80 | 550 | 1 | 300 | 250 | 218 | 30 | 8-φ25 | 360 | 130 | |
| 150 | 570 | 90 | 620 | 1 | 330 | 280 | 248 | 32 | 12-φ25 | 360 | 170 | |
| 200 | 690 | 95 | 750 | 1 | 395 | 340 | 302 | 36 | 12-φ25 | 400 | 250 | |
| 4 | 15 | 200 | 50 | 210 | 1-2 | 105 | 75 | 55 | 16 | 4--φ14 | 120 | 14 |
| 20 | 220 | 50 | 240 | 1-2 | 115 | 85 | 65 | 16 | 4--φ14 | 140 | 18 | |
| 25 | 220 | 50 | 250 | 1-2 | 135 | 100 | 78 | 18 | 4--φ18 | 160 | 25 | |
| 32 | 250 | 55 | 270 | 1-2 | 145 | 110 | 85 | 18 | 4--φ18 | 160 | 33 | |
| 40 | 270 | 60 | 310 | 1-2 | 160 | 125 | 100 | 20 | 4--φ18 | 160 | 41 | |
| 50 | 300 | 60 | 330 | 3-4 | 180 | 145 | 120 | 22 | 8-φ18 | 240 | 45 | |
| 65 | 350 | 65 | 360 | 3-4 | 192 | 160 | 135 | 22 | 8-φ18 | 240 | 62 | |
| 80 | 380 | 70 | 400 | 3-4 | 230 | 190 | 160 | 24 | 8-φ23 | 280 | 80 | |
| 100 | 430 | 75 | 480 | 1 | 270 | 220 | 188 | 28 | 8-φ25 | 320 | 100 | |
| 125 | 490 | 80 | 550 | 1 | 300 | 250 | 218 | 30 | 8-φ25 | 360 | 130 | |
| 150 | 570 | 90 | 620 | 1 | 350 | 295 | 258 | 34 | 12-φ30 | 360 | 185 | |
| 200 | 690 | 95 | 750 | 1 | 415 | 355 | 315 | 40 | 12-φ34 | 400 | 268 | |
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