日标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/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〕。
日标截止阀只适用于全开和全关,不允许作调节和节流。日标截止阀属于强制密封式阀门,所以在阀门关闭时,必须向阀瓣施加压力,以强制密封面不 泄漏。当介质由阀瓣下方进入阀门时,操作力所需克服的阻力,是阀杆和填料的摩擦力与由介质的压力 所产生的推力,关于日标截止阀的力比开日标截止阀的力大,所以阀杆的直径要大,否则会发生阀杆顶弯的故障。
用途
广泛应用于市政建设、农田水利、火力发电、石油化工、冶金矿山、消防环保、食品、航运、医药和轻纺等各个领域。
型号 | 公称通经 | 主要外形和连接尺寸 | 重量 | ||||||||||
SIZE | DN | d | L | Lj | D | D1 | D2 | b | Z-φD | W | H(开) | ||
150 | 1/2 | 15 | 15 | 108 | - | 89 | 60.5 | 35 | 10 | 4-15 | 100 | 181 | 3.5 |
3/4 | 20 | 20 | 117 | - | 98 | 70 | 43 | 11 | 4-15 | 100 | 191 | 3.9 | |
1 | 25 | 25 | 127 | - | 108 | 79.5 | 51 | 12 | 4-15 | 120 | 216 | 5.8 | |
11/2 | 40 | 40 | 165 | - | 127 | 98.5 | 73 | 15 | 4-15 | 133 | 354 | 10.8 | |
2 | 50 | 50 | 178 | - | 152 | 120.5 | 92 | 16 | 4-19 | 200 | 330 | 20 | |
21/2 | 65 | 65 | 190 | - | 178 | 139.5 | 105 | 18 | 4-19 | 250 | 359 | 32 | |
3 | 80 | 80 | 203 | - | 190 | 152.5 | 127 | 19 | 4-19 | 280 | 390 | 42 | |
4 | 100 | 100 | 229 | - | 229 | 190.5 | 157 | 24 | 8-19 | 298 | 444 | 64 | |
6 | 150 | 150 | 394 | - | 279 | 241.5 | 216 | 26 | 8-22 | 350 | 521 | 114 | |
8 | 200 | 200 | 457 | - | 343 | 298.5 | 270 | 29 | 8-22 | 400 | 609 | 186 | |
300 | 1/2 | 15 | 15 | 140 | 164 | 95 | 66.5 | 35 | 15 | 4-15 | 100 | 162 | 3.7 |
3/4 | 20 | 20 | 152 | 190.5 | 117 | 82.5 | 43 | 16 | 4-19 | 120 | 168 | 5.3 | |
1 | 25 | 25 | 165 | 216 | 124 | 89 | 51 | 18 | 4-19 | 125 | 194 | 7.3 | |
11/2 | 40 | 40 | 190 | 241 | 156 | 114.5 | 73 | 21 | 4-22 | 168 | 235 | 15.4 | |
2 | 50 | 50 | 216 | 283 | 165 | 127 | 92 | 23 | 8-19 | 200 | 387 | 26 | |
21/2 | 65 | 65 | 241 | 308 | 190 | 149 | 105 | 26 | 8-22 | 200 | 419 | 40 | |
3 | 80 | 80 | 283 | 333 | 210 | 168.5 | 127 | 29 | 8-22 | 280 | 438 | 50 | |
4 | 100 | 100 | 305 | 371 | 254 | 200 | 157 | 32 | 8-22 | 350 | 504 | 90 | |
6 | 150 | 150 | 403 | 460 | 318 | 270 | 216 | 37 | 8-22 | 400 | 660 | 160 | |
8 | 200 | 200 | 502 | 575 | 381 | 330 | 270 | 42 | 12-25 | 450 | 902 | 290 | |
600 | 1/2 | 15 | 15 | 165 | 164 | 95 | 66.5 | 35 | 22 | 4-15 | 100 | 162 | 4.5 |
3/4 | 20 | 20 | 190 | 190.5 | 118 | 82.5 | 43 | 23 | 4-19 | 140 | 168 | 7.3 | |
1 | 25 | 25 | 216 | 216 | 124 | 89 | 51 | 25 | 4-19 | 159 | 194 | 9.6 | |
11/2 | 40 | 40 | 241 | 241 | 156 | 114.5 | 73 | 30 | 4-22 | 190 | 235 | 19 | |
2 | 50 | 50 | 292 | 295 | 165 | 127 | 92 | 33 | 8-19 | 255 | 362 | 35 | |
21/2 | 65 | 65 | 330 | 333 | 190 | 149 | 100 | 36 | 8-22 | 267 | 394 | 50 | |
3 | 80 | 80 | 356 | 359 | 210 | 168 | 127 | 39 | 8-22 | 305 | 464 | 60 | |
4 | 100 | 100 | 432 | 435 | 273 | 216 | 157 | 45 | 8-25 | 400 | 546 | 110 | |
6 | 150 | 150 | 559 | 562 | 356 | 292 | 216 | 55 | 12-29 | 495 | 883 | 230 |