截止阀的启闭件是塞形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动。阀杆的运动形式，有升降杆式（阀杆升降，手轮不升降），也有升降旋转杆式（手轮与阀杆一起旋转升降，螺母设在阀体上）。截止阀只适用于全开和全关，不允许作调节和节流。
主要特点及用途
结构紧凑、设计合理，阀门刚性好，通道流畅，流阻系数小。
密封面采用不锈钢和硬质合金，使用寿命长
采用柔性石墨填料、密封可靠、操作轻便灵活
驱动方式分手动、电动、气动、齿轮传功，结构型式：弹性楔式单闸板、刚性楔式单闸板和双闸板型式。
广泛适用于石油化工，火力发电厂等油品、水蒸汽管路上作接通或截断管路中介质的启闭装置。
主要性能规范
试验压力
公称压力PN(MPa)
| 实验压力(MPa) |
| 壳体 | 密封(液) | 密封(气) | 上密封 |
| 1.6 | 2.4 | 1.8 | 0.6 | 1.8 |
| 2.5 | 3.8 | 2.8 | 0.6 | 2.8 |
| 4.0 | 6.0 | 4.4 | 0.6 | 4.4 |
| 6.4 | 9.6 | 7.0 | 0.6 | 7.0 |
| 10.0 | 15.0 | 11.0 | 0.6 | 11.0 |
| 16.0 | 24.0 | 18.0 | 0.6 | 18.0 |
适用范围
壳体材料
| 适用介质
| 适用温度(℃)
|
| 碳素钢(C型) | 水、蒸汽、油品 | ≤425 |
| 硝酸类 | ≤200 |
| 醋酸类 | ≤200 |
| 水、蒸汽、油品 | ≤550 |
主要零件材料
阀体、阀盖
| 阀板、阀座 | 阀杆 | 阀杆螺母 | 填料 | 手轮 |
碳素钢
| 优质碳钢+硬质合金或不锈钢 | 铬不锈钢 | 铝青铜 | 石墨石棉盘根 | 可锻铸铁 |
铬镍钛钢
| 不锈钢、不锈钢+硬质合金 | 铬镍钛不锈钢 | 铝青铜 | 浸聚四氟乙 | 可锻铸铁 |
铬镍钼钛钢
| 不锈钢、不锈钢+硬质合金 | 铬镍钼钛不锈钢 | 铝青铜 | 烯石棉盘根 | 可锻铸铁 |
铬钼钢
| 合金钢+硬质合金 | 铬钼铝钢 | 铝青铜 | 柔性石墨 | 可锻铸铁 |
主要尺寸及重量
公称通径
| 主要外形尺寸和连接尺寸(mm) | 电动装置
| 重量 |
| L | D | D1 | D2 | b | f | z-d | H |
| Z940H | -16C | Z940 | Y-16P | Z940 | Y-16R | Z940 | W-16P | Z940 | W-16R | Z940 | Y-16I |
| Z941Y | Z941 | Z941 | Z941 | Z941 | Z941 |
|
| 40 | 200 | 145 | 110 | 85 | 16 | 3 | 4-18 | 595 | DZW15 | 56 |
| 50 | 250 | 160 | 125 | 100 | 16 | 3 | 4-18 | 653 | DZW20 | 59 |
| 65 | 265 | 180 | 145 | 120 | 18 | 3 | 4-18 | 665 | DZW20 | 62 |
| 80 | 280 | 195 | 160 | 135 | 20 | 3 | 8-18 | 725 | DZW20 | 74 |
| 100 | 300 | 215 | 180 | 155 | 20 | 3 | 8-18 | 787 | DZW20 | 92 |
| 150 | 350 | 280 | 240 | 210 | 24 | 3 | 8-23 | 955 | DZW30 | 161 |
| 200 | 400 | 335 | 295 | 265 | 26 | 3 | 12-23 | 1105 | DZW30 | 219 |
| 250 | 450 | 405 | 355 | 320 | 30 | 3 | 12-25 | 1343 | DZW45 | 376 |
| 300 | 500 | 460 | 410 | 375 | 30 | 4 | 12-25 | 1516 | DZW60 | 484 |
| 350 | 550 | 520 | 470 | 435 | 34 | 4 | 16-25 | 1678 | DZW60 | 695 |
| 400 | 600 | 580 | 525 | 485 | 36 | 4 | 16-30 | 1849 | DZW90 | 977 |
| 450 | 650 | 640 | 585 | 545 | 40 | 4 | 20-30 | 1937 | DZW90 | 1033 |
| 500 | 700 | 705 | 650 | 608 | 44 | 4 | 20-34 | 2234 | DZW120 | 1087 |
| 600 | 800 | 840 | 770 | 718 | 48 | 5 | 20-41 | 2432 | DZW180 | 1357 |
| 700 | 900 | 910 | 840 | 788 | 50 | 5 | 24-41 | 2489 | DZW250 | 1481 |
| 800 | 1000 | 1020 | 950 | 898 | 52 | 5 | 24-41 | 2643 | DZW350 | 1845 |
注:DN700、DN800的型号为Z942型NOTE:DN700、DN800type is Z942.主要尺寸及重量
公称通径
| 主要外形尺寸和连接尺寸(mm) | 电动装置
| 重量(kg)
|
| L | D | D1 | D2 | b | f | z-d | H |
| Z940H | -25C | Z940 | Y-25P | Z940 | Y-25R | Z940 | W-25P | Z940 | W-25R | Z940 | Y-25I |
| Z941Y | Z941 | Z941 | Z941 | Z941 | Z941 |
|
| 40 | 200 | 145 | 110 | 85 | 18 | 3 | 4-18 | 595 | DZW15 | 60 |
| 50 | 250 | 160 | 125 | 100 | 20 | 3 | 4-18 | 653 | DZW20 | 64 |
| 65 | 265 | 180 | 145 | 120 | 22 | 3 | 8-18 | 665 | DZW20 | 65 |
| 80 | 280 | 195 | 160 | 135 | 22 | 3 | 8-18 | 725 | DZW20 | 79 |
| 100 | 300 | 230 | 190 | 160 | 24 | 3 | 8-23 | 787 | DZW20 | 98 |
| 125 | 325 | 270 | 220 | 188 | 28 | 3 | 8-25 | 902 | DZW30 | 154 |
| 150 | 350 | 300 | 250 | 218 | 30 | 3 | 8-25 | 955 | DZW30 | 168 |
| 200 | 400 | 360 | 310 | 278 | 34 | 3 | 12-25 | 1105 | DZW45 | 219 |
| 250 | 450 | 425 | 370 | 332 | 36 | 3 | 12-30 | 1343 | DZW45 | 390 |
| 300 | 500 | 485 | 430 | 390 | 40 | 4 | 12-30 | 1516 | DZW60 | 505 |
| 350 | 550 | 550 | 490 | 448 | 44 | 4 | 16-30 | 1678 | DZW60 | 736 |
| 400 | 600 | 610 | 550 | 505 | 48 | 4 | 16-34 | 1849 | DZW90 | 1027 |
| 450 | 650 | 660 | 600 | 555 | 50 | 4 | 16-34 | 1937 | DZW90 | 1139 |
| 500 | 700 | 730 | 660 | 610 | 52 | 4 | 20-34 | 2234 | DZW120 | 1228 |
| 600 | 800 | 840 | 770 | 718 | 56 | 5 | 20-41 | 2432 | DZW180 | 1502 |
| 700 | 900 | 955 | 875 | 815 | 60 | 5 | 20-41 | 2489 | DZW250 | 1617 |
| 800 | 1000 | 1070 | 990 | 930 | 64 | 5 | 24-48 | 2643 | DZW350 | 1923 |
DN700、DN800的型号为Z942型 NOTE:DN700、DN800type is Z942.主要尺寸及重量Main dimensions and weight
公称通径
| 主要外形尺寸和连接尺寸(mm) | 电动装置
| 重量(kg)
|
| L | D | D1 | D2 | D6 | b | z-d | f | f2 | H |
| Z940H | -40 | Z940 | Y-40P | Z940 | Y-40R | Z940 | W-40P | Z940 | W-40R | Z940 | Y-40I |
| Z941Y | Z941 | Z941 | Z941 | Z941 | Z941 |
|
| 40 | 200 | 145 | 110 | 85 | 76 | 18 | 4-18 | 3 | 4 | 617 | DZW15 | 46 |
| 50 | 250 | 160 | 125 | 100 | 88 | 20 | 4-18 | 3 | 4 | 665 | DZW20 | 58 |
| 65 | 280 | 180 | 145 | 120 | 110 | 22 | 8-18 | 3 | 4 | 680 | DZW20 | 68 |
| 80 | 310 | 195 | 160 | 135 | 121 | 22 | 8-18 | 3 | 4 | 752 | DZW20 | 80 |
| 100 | 350 | 230 | 190 | 160 | 150 | 24 | 8-23 | 3 | 4.5 | 846 | DZW30 | 108 |
| 150 | 450 | 300 | 250 | 218 | 204 | 30 | 8-25 | 3 | 4.5 | 1087 | DZW45 | 258 |
| 200 | 550 | 375 | 320 | 282 | 260 | 38 | 12-30 | 3 | 4.5 | 1243 | DZW45 | 366 |
| 250 | 650 | 445 | 385 | 345 | 313 | 42 | 12-34 | 3 | 4.5 | 1429 | DZW60 | 472 |
| 300 | 750 | 510 | 450 | 408 | 364 | 46 | 16-34 | 4 | 4.5 | 1608 | DZW90 | 673 |
| 350 | 850 | 570 | 510 | 465 | 422 | 52 | 16-34 | 4 | 5 | 1738 | DZW90 | 804 |
| 400 | 950 | 655 | 585 | 535 | 474 | 58 | 16-41 | 4 | 5 | 1897 | DZW120 | 1081 |
| 450 | 1050 | 680 | 610 | 560 | 524 | 60 | 20-41 | 4 | 5 | 2104 | DZW180 | 1259 |
| 500 | 1150 | 755 | 670 | 612 | 576 | 62 | 20-48 | 4 | 5 | 2401 | DZW180 | 1348 |
主要尺寸及重量
公称通径
| 主要外形尺寸和连接尺寸(mm) | 电动装置
| 重量(kg)
|
| L | D | D1 | D2 | D6 | b | z-d | f | f2 | H |
| Z940H | -64 | Z940 | Y-64P | Z940 | Y-64R | Z940 | W-64P | Z940 | W-64R | Z940 | Y-64I |
| Z941Y | Z941 | Z941 | Z941 | Z941 | Z941 |
|
| 50 | 250 | 175 | 135 | 105 | 88 | 26 | 4-23 | 3 | 4 | 667 | DZW20 | 68 |
| 65 | 280 | 200 | 160 | 130 | 110 | 28 | 8-23 | 3 | 4 | 685 | DZW20 | 72 |
| 80 | 310 | 210 | 170 | 140 | 121 | 30 | 8-23 | 3 | 4 | 748 | DZW30 | 88 |
| 100 | 350 | 250 | 200 | 168 | 150 | 32 | 8-25 | 3 | 4.5 | 845 | DZW30 | 117 |
| 150 | 450 | 340 | 280 | 240 | 204 | 88 | 8-34 | 3 | 4.5 | 1009 | DZW45 | 314 |
| 200 | 550 | 405 | 345 | 300 | 260 | 44 | 12-34 | 3 | 4.5 | 1253 | DZW60 | 432 |
| 250 | 650 | 470 | 400 | 345 | 313 | 48 | 12-41 | 3 | 4.5 | 1449 | DZW60 | 595 |
| 300 | 750 | 530 | 460 | 412 | 361 | 54 | 16-41 | 4 | 4.5 | 1867 | DZW90 | 721 |
| 350 | 850 | 595 | 525 | 475 | 422 | 60 | 16-41 | 4 | 5 | 1931 | DZW120 | 863 |
| 400 | 950 | 670 | 585 | 525 | 474 | 66 | 16-48 | 4 | 5 | 2017 | DZW180 | 1129 |
| 500 | 1150 | 800 | 705 | 640 | 576 | 70 | 20-54 | 4 | 5 | 2459 | DZW 250 | 1493 |
| Z940H | -100 | Z940 | Y-100P | Z940 | Y-100R | Z940 | W-100P | Z940 | W-100R | Z940 | Y-100I |
| Z941Y | Z941 | Z941 | Z941 | Z941 | Z941 |
|
| 50 | 250 | 195 | 145 | 112 | 88 | 28 | 4-25 | 3 | 4 | 781 | DZW20 | 78 |
| 65 | 280 | 220 | 170 | 138 | 110 | 32 | 8-25 | 3 | 4 | 830 | DZW20 | 96 |
| 80 | 310 | 230 | 180 | 148 | 121 | 34 | 8-25 | 3 | 4 | 865 | DZW30 | 126 |
| 100 | 350 | 265 | 210 | 172 | 150 | 38 | 8-30 | 3 | 4.5 | 1179 | DZW30 | 134 |
| 150 | 450 | 350 | 290 | 250 | 204 | 46 | 12-34 | 3 | 4.5 | 1201 | DZW60 | 352 |
| 200 | 550 | 430 | 360 | 312 | 260 | 54 | 12-41 | 3 | 4.5 | 1611 | DZW60 | 484 |
| 250 | 650 | 500 | 430 | 382 | 313 | 60 | 12-41 | 3 | 4.5 | 1903 | DZW90 | 608 |
| 300 | 750 | 585 | 500 | 442 | 364 | 70 | 16-48 | 4 | 4.5 | 2054 | DZW120 | 757 |
| 350 | 850 | 655 | 560 | 498 | 422 | 76 | 16-54 | 4 | 5 | 2132 | DZW180 | 994 |
| 400 | 950 | 715 | 620 | 558 | 474 | 80 | 16-54 | 4 | 5 | 2321 | DZW 250 | 1269 |
| Z940H | -160 | Z940 | Y-160P | Z940 | Y-160R | Z940 | W-160P | Z940 | W-160R | Z940 | Y-160I |
| Z941Y | Z941 | Z941 | Z941 | Z941 | Z941 |
|
| 50 | 300 | 215 | 165 | 132 | 88 | 36 | 8-25 | 3 | 4 | 905 | DZW20 | 101 |
| 65 | 340 | 245 | 190 | 152 | 110 | 44 | 8-30 | 3 | 4 | 968 | DZW20 | 137 |
| 80 | 390 | 260 | 205 | 168 | 121 | 46 | 8-30 | 3 | 4 | 978 | DZW30 | 167 |
| 100 | 450 | 300 | 240 | 200 | 150 | 48 | 8-34 | 3 | 4.5 | 1043 | DZW30 | 211 |
| 125 | 525 | 355 | 285 | 238 | 176 | 60 | 8-41 | 3 | 4.5 | 1248 | DZW60 | 424 |
| 150 | 600 | 390 | 318 | 270 | 204 | 66 | 12-41 | 3 | 4.5 | 1394 | DZW90 | 588 |
| 200 | 750 | 480 | 400 | 345 | 250 | 78 | 12-48 | 3 | 4.5 | 1621 | DZW120 | 839 |
