簡介
日標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/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〕。 日標截止閥只適用於全開和全關,不允許作調節和節流。日標截止閥屬於強制密封式閥門,所以在閥門關閉時,必須向閥瓣施加壓力,以強制密封面不 泄漏。當介質由閥瓣下方進入閥門時,操作力所需克服的阻力,是閥桿和填料的摩擦力與由介質的壓力 所產生的推力,關於日標截止閥的力比開日標截止閥的力大,所以閥桿的直徑要大,否則會發生閥桿頂彎的故障。 用途廣泛套用於市政建設、農田水利、火力發電、石油化工、冶金礦山、消防環保、食品、航運、醫藥和輕紡等各個領域。外形尺寸
型號 | 公稱通經 | 主要外形和連線尺寸 | 重量 | ||||||||||
SIZE | DN | d | L | Lj | D | D1 | D2 | b | Z-φD | W | H(開) | ||
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 |