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(zhuǎn)桿式（手輪與閥桿一起旋轉(zhuǎn)升降，螺母設(shè)在閥體上）。截止閥只適用于全開和全關(guān)，不允許作調(diào)節(jié)和節(jié)流。
傘齒輪截止閥性能規(guī)范
閥體材料 | 公稱壓力(MPa) | 工作溫度(℃) | 適用介質(zhì) | |
碳鋼 | 10.0 | ≤425 | 水、油品、蒸汽 | |
不銹鋼 | P | 10.0 | ≤200 | 硝酸類 |
R | 醋酸類 | |||
鉻鉬鋼 | 10.0 | ≤550 | 油品、蒸汽 | |
傘齒輪截止閥規(guī)格主要尺寸
| 公稱壓力 PN | 公稱通徑 DN | 主要連接尺寸 | Z43外形尺寸 | |||||||||
| L | D | D1 | D2 | D6 | b | f | f1 | Z-φd | H | D0 | ||
| 1.6MPa | 15 | 130 | 95 | 65 | 45 | - | 14 | 2 | - | 4-14 | 119 | 75 |
| 20 | 150 | 105 | 75 | 55 | - | 14 | 2 | - | 4-14 | 120 | 75 | 75 |
| 25 | 160 | 115 | 85 | 65 | - | 14 | 2 | - | 4-14 | 126 | 75 | 75 |
| 32 | 180 | 135 | 100 | 78 | - | 15 | 2 | - | 4-18 | 160 | 120 | 120 |
| 40 | 200 | 146 | 110 | 85 | - | 16 | 2 | - | 4-18 | 168 | 120 | 120 |
| 50 | 230 | 160 | 125 | 100 | - | 16 | 3 | - | 4-18 | 194 | 160 | 160 |
| 65 | 290 | 180 | 145 | 120 | - | 18 | 3 | - | 4-18 | - | - | - |
| 80 | 310 | 195 | 160 | 135 | - | 20 | 3 | - | 8-18 | - | - | - |
| 100 | 350 | 215 | 180 | 155 | - | 20 | 3 | - | 8-18 | - | - | - |
| 125 | 400 | 245 | 210 | 185 | - | 22 | 3 | - | 8-18 | - | - | - |
| 150 | 480 | 280 | 240 | 210 | - | 24 | 3 | - | 8-23 | - | - | - |
| 2.5MPa | 15 | 130 | 95 | 65 | 45 | - | 16 | 2 | - | 4-14 | 230 | 120 |
| 20 | 150 | 105 | 75 | 55 | - | 16 | 2 | - | 4-14 | 275 | 140 | |
| 25 | 160 | 115 | 85 | 65 | - | 16 | 2 | - | 4-14 | 295 | 160 | |
| 32 | 180 | 135 | 100 | 78 | - | 18 | 2 | - | 4-18 | 335 | 160 | |
| 40 | 200 | 145 | 110 | 85 | - | 18 | 3 | - | 4-18 | 380 | 200 | |
| 50 | 230 | 160 | 125 | 100 | - | 20 | 3 | - | 4-18 | 398 | 240 | |
| 65 | 290 | 180 | 145 | 120 | - | 22 | 3 | - | 8-18 | 433 | 280 | |
| 80 | 310 | 195 | 160 | 135 | - | 22 | 3 | - | 8-18 | 468 | 320 | |
| 100 | 350 | 230 | 190 | 160 | - | 24 | 3 | - | 8-23 | 520 | 360 | |
| 125 | 400 | 270 | 220 | 188 | - | 28 | 3 | - | 8-25 | 556 | 400 | |
| 150 | 480 | 300 | 250 | 218 | - | 30 | 3 | - | 8-25 | 674 | 400 | |
| 200 | 600 | 360 | 310 | 278 | - | 34 | 3 | - | 12-25 | 806 | 450 | |
| 250 | 650 | 425 | 370 | 332 | - | 36 | 3 | - | 12-30 | 880 | 550 | |
| 300 | 750 | 485 | 430 | 390 | - | 40 | 4 | - | 16-34 | 995 | 800 | |
環(huán)保在線