產(chǎn)品簡(jiǎn)介
旋啟式止回閥又稱(chēng)單向閥或逆止閥,其作用是防止管路中的介質(zhì)倒流。啟閉件靠介質(zhì)流動(dòng)和力量自行開(kāi)啟或關(guān)閉,以防止介質(zhì)倒流的閥門(mén)叫止回閥。止回閥屬于自動(dòng)閥類(lèi),主要用于介質(zhì)單向流動(dòng)的管道上,只允許介質(zhì)向一個(gè)方向流動(dòng),以防止發(fā)生事故。本類(lèi)閥門(mén)在管道中一般應當水平安裝。
主要性能規范:
試驗壓力(MPa) | 公稱(chēng)壓力(Mpa) | ||||||
2.5 | 4.0 | 6.4 | 10.0 | 16 | 20 | 25 | |
殼體強度試驗 | 3.75 | 6.0 | 9.6 | 15.0 | 24 | 30 | 38 |
密封試驗(液) | 2.75 | 4.4 | 7.0 | 11.0 | 17.6 | 22 | 27.5 |
密封試驗(氣) | 0.5~0.7 | ||||||
試用介質(zhì)A | C | P | R | I | |||
水、油品、蒸汽 | 硝酸類(lèi) | 醋酸類(lèi) | 空氣、水 | ||||
使用溫度(℃) | <425 | <200 | <200 | ≤550 |
尺寸圖紙:
主要外形尺寸和連接尺寸(mm):
公稱(chēng)通徑 (mm) | 公稱(chēng)壓力 (Mpa) | L | H | D | D1 | D2 | D6 | b | f | f2 | z-d |
50 | 2.5 | 230 | 160 | 160 | 125 | 100 | 20 | 3 | 4-18 | ||
65 | 290 | 175 | 180 | 145 | 120 | 22 | 3 | 8-18 | |||
80 | 310 | 185 | 195 | 160 | 135 | 22 | 3 | 8-18 | |||
100 | 350 | 220 | 230 | 190 | 160 | 24 | 3 | 8-23 | |||
125 | 400 | 248 | 270 | 220 | 188 | 28 | 3 | 8-25 | |||
150 | 480 | 276 | 300 | 250 | 218 | 30 | 3 | 8-25 | |||
200 | 550 | 350 | 360 | 310 | 278 | 34 | 3 | 12-25 | |||
250 | 650 | 410 | 425 | 370 | 332 | 36 | 3 | 12-30 | |||
300 | 750 | 430 | 485 | 430 | 390 | 40 | 4 | 16-30 | |||
350 | 850 | 518 | 550 | 490 | 448 | 44 | 4 | 16-34 | |||
400 | 950 | 560 | 610 | 550 | 505 | 48 | 4 | 16-34 | |||
500 | 1150 | 618 | 730 | 660 | 610 | 52 | 4 | 20-41 | |||
50 | 4.0 | 230 | 169 | 160 | 125 | 100 | 88 | 20 | 3 | 4 | 4-18 |
65 | 290 | 173 | 180 | 145 | 120 | 110 | 22 | 3 | 4 | 8-18 | |
80 | 310 | 185 | 195 | 160 | 135 | 121 | 22 | 3 | 4 | 8-18 | |
100 | 350 | 220 | 230 | 190 | 160 | 150 | 24 | 3 | 4.5 | 8-23 | |
125 | 400 | 248 | 270 | 220 | 188 | 176 | 28 | 3 | 4.5 | 8-25 | |
150 | 480 | 270 | 300 | 250 | 218 | 204 | 30 | 3 | 4.5 | 8-25 | |
200 | 550 | 342 | 375 | 320 | 282 | 260 | 38 | 3 | 4.5 | 12-30 | |
250 | 650 | 401 | 445 | 385 | 345 | 313 | 42 | 3 | 4.5 | 12-34 | |
300 | 750 | 423 | 510 | 450 | 408 | 364 | 46 | 4 | 4.5 | 16-34 | |
350 | 850 | 455 | 570 | 510 | 465 | 422 | 52 | 4 | 5 | 16-34 | |
400 | 950 | 510 | 655 | 585 | 535 | 474 | 58 | 4 | 5 | 16-41 | |
50 | 6.4 | 300 | 177 | 175 | 135 | 105 | 88 | 26 | 3 | 4 | 4-23 |
65 | 340 | 197 | 200 | 160 | 130 | 110 | 28 | 3 | 4 | 8-23 | |
80 | 380 | 212 | 210 | 170 | 140 | 121 | 30 | 3 | 4 | 8-23 | |
100 | 430 | 248 | 250 | 200 | 168 | 150 | 32 | 3 | 4.5 | 8-25 | |
125 | 500 | 296 | 295 | 240 | 202 | 176 | 36 | 3 | 4.5 | 8-30 | |
150 | 550 | 330 | 340 | 280 | 240 | 204 | 38 | 3 | 4.5 | 8-34 | |
200 | 650 | 385 | 405 | 345 | 300 | 260 | 44 | 3 | 4.5 | 12-34 | |
250 | 775 | 445 | 470 | 400 | 352 | 313 | 48 | 3 | 4.5 | 12-41 | |
300 | 900 | 474 | 530 | 460 | 412 | 364 | 54 | 4 | 4.5 | 16-41 | |
350 | 1025 | 514 | 595 | 525 | 475 | 422 | 60 | 4 | 5 | 16-41 | |
400 | 1150 | 616 | 670 | 585 | 525 | 474 | 66 | 4 | 5 | 16-48 | |
50 | 10.0 | 300 | 210 | 195 | 145 | 112 | 88 | 28 | 3 | 4 | 4-25 |
65 | 340 | 227 | 220 | 170 | 138 | 110 | 32 | 3 | 4 | 8-25 | |
80 | 380 | 235 | 230 | 180 | 148 | 121 | 34 | 3 | 4 | 8-25 | |
100 | 430 | 274 | 265 | 210 | 172 | 150 | 38 | 3 | 4.5 | 8-30 | |
125 | 500 | 307 | 310 | 250 | 210 | 176 | 42 | 3 | 4.5 | 8-34 | |
150 | 550 | 347 | 350 | 290 | 250 | 204 | 46 | 3 | 4.5 | 12-34 | |
200 | 650 | 402 | 430 | 360 | 312 | 260 | 54 | 3 | 4.5 | 12-41 | |
250 | 775 | 432 | 500 | 430 | 382 | 313 | 60 | 3 | 4.5 | 12-41 | |
300 | 900 | 484 | 585 | 500 | 442 | 364 | 70 | 4 | 4.5 | 16-48 | |
50 | 16.0 | 300 | 210 | 215 | 165 | 132 | 188 | 36 | 3 | 4 | 8-25 |
65 | 340 | 227 | 245 | 190 | 152 | 110 | 44 | 3 | 4 | 8-30 | |
80 | 380 | 235 | 260 | 205 | 168 | 121 | 46 | 3 | 4.5 | 8-30 | |
100 | 430 | 274 | 300 | 240 | 200 | 150 | 48 | 3 | 4.5 | 8-34 | |
150 | 550 | 340 | 390 | 318 | 270 | 205 | 66 | 3 | 4.5 | 12-41 | |
200 | 650 | 374 | 480 | 400 | 345 | 250 | 78 | 3 | 4.5 | 12-48 | |
250 | 775 | 440 | 580 | 485 | 425 | 313 | 88 | 3 | 4.5 | 12-54 | |
300 | 900 | 505 | 665 | 570 | 510 | 364 | 100 | 3 | 4.5 | 16-54 |
H44H(Y、W)-200 | |||||||||
公稱(chēng)通徑 | 尺寸(mm)(JB79) | ||||||||
L | D | D1 | D2 | D6 | b | f | Z-Фd | H | |
50 | 300 | 210 | 160 | 128 | 70 | 40 | 3 | 8-Ф25 | 120 |
65 | 340 | 260 | 203 | 165 | 97 | 48 | 3 | 8-Ф30 | 190 |
80 | 380 | 290 | 230 | 190 | 116 | 54 | 3 | 8-Ф34 | 210 |
100 | 430 | 360 | 292 | 245 | 138 | 66 | 3 | 8-Ф41 | 240 |
150 | 550 | 440 | 360 | 305 | 190 | 82 | 3 | 12-Ф48 | 343 |
200 | 650 | 535 | 440 | 380 | 245 | 92 | 3 | 12-Ф48 | 320 |
250 | 775 | 670 | 572 | 508 | 319 | 110 | 3 | 16-Ф48 | 380 |
H44H(Y、W)-250 | |||||||||||
公稱(chēng)通徑 (mm) | 尺寸(mm)(GB9113.25) | ||||||||||
L | D | D1 | D2 | D8 | b | b4 | f | f3 | Z-d | H | |
50 | 300 | 215 | 165 | 124 | 95 | 38 | 12 | 8 | 8 | 8-Ф26 | 220 |
65 | 340 | 245 | 190 | 137 | 108 | 41 | 12 | 8 | 8 | 8-Ф30 | 230 |
80 | 380 | 270 | 203 | 168 | 137 | 48 | 12 | 8 | 8 | 8-Ф33 | 245 |
100 | 430 | 310 | 241 | 194 | 162 | 54 | 12 | 8 | 8 | 8-Ф36 | 280 |
150 | 550 | 395 | 318 | 248 | 211 | 83 | 13 | 9.5 | 9.5 | 12-Ф39 | 340 |
200 | 650 | 485 | 394 | 318 | 270 | 92 | 17 | 11 | 11 | 12-Ф45 | 360 |
250 | 775 | 585 | 483 | 371 | 324 | 108 | 17 | 11 | 11 | 12-Ф52 | 395 |
300 | 900 | 675 | 571 | 438 | 381 | 124 | 23 | 14 | 14 | 16-Ф56 | 478 |