H41H升降式止回閥的構(gòu)造與截止閥類似,閥體和閥瓣與截止閥相同。閥瓣上部和閥蓋下部加工有導(dǎo)向套簡(jiǎn),閥瓣導(dǎo)向簡(jiǎn)可在閥盞導(dǎo)向簡(jiǎn)內(nèi)自在升降,當(dāng)介質(zhì)逆流時(shí),閥瓣靠介質(zhì)推力開啟,當(dāng)介質(zhì)停流時(shí),閥瓣靠自垂降落在閥座上,起阻止介質(zhì)逆流作用。直通式蝶式止回閥介質(zhì)進(jìn)出口通道方向與閥座通道方向垂直;立式升降式止回閥,其介質(zhì)進(jìn)出口通道方向與閥座通道方向相同,其活動(dòng)阻力較直通式小。
升降式碳鋼止回閥
型號(hào) | 公稱壓力PN | 公稱通徑 | 尺寸(mm) | 重量 | |||||||
L | D | D1 | D2 | b | Z-d | D3 | H | ||||
H44H-16C | 1.6 | 40 | 200 | 145 | 110 | 88 | 20 | 4-18 | 145 | 103 | 15.2 |
1.6 | 50 | 230 | 160 | 125 | 102 | 20 | 4-18 | 185 | 160 | 21.3 | |
1.6 | 65 | 290 | 180 | 145 | 122 | 22 | 8-18 | 215 | 175 | 28.1 | |
1.6 | 80 | 310 | 195 | 160 | 133 | 22 | 8-18 | 235 | 185 | 37.6 | |
1.6 | 100 | 350 | 230 | 180 | 158 | 24 | 8-23 | 270 | 220 | 56.7 | |
1.6 | 125 | 400 | 270 | 210 | 184 | 28 | 8-25 | 340 | 248 | 91 | |
1.6 | 150 | 480 | 300 | 240 | 212 | 30 | 8-25 | 375 | 270 | 129 | |
1.6 | 200 | 550 | 360 | 295 | 268 | 34 | 12-25 | 435 | 350 | 210 | |
1.6 | 250 | 650 | 425 | 355 | 320 | 36 | 12-30 | 515 | 415 | 290 | |
1.6 | 300 | 750 | 485 | 410 | 370 | 40 | 16-30 |
|
| 320 | |
1.6 | 350 | 850 | 550 | 470 | 430 | 44 | 16-34 |
|
| 420 |
型號(hào) | 公稱壓力 | 公稱通徑 | 尺寸(mm) | 重量 | |||||||
L | D | D1 | D2 | b | Z-d | D3 | H | ||||
H44H-25C | 2.5 | 40 | 200 | 145 | 110 | 88 | 20 | 4-18 | 145 | 103 | 15.2 |
2.5 | 50 | 230 | 160 | 125 | 102 | 20 | 4-18 | 185 | 160 | 21.3 | |
2.5 | 65 | 290 | 180 | 145 | 122 | 22 | 8-18 | 215 | 175 | 28.1 | |
2.5 | 80 | 310 | 195 | 160 | 133 | 22 | 8-18 | 235 | 185 | 37.6 | |
2.5 | 100 | 350 | 230 | 180 | 158 | 24 | 8-23 | 270 | 220 | 56.7 | |
2.5 | 125 | 400 | 270 | 210 | 184 | 28 | 8-25 | 340 | 248 | 91 | |
2.5 | 150 | 480 | 300 | 240 | 212 | 30 | 8-25 | 375 | 270 | 129 | |
2.5 | 200 | 550 | 360 | 295 | 268 | 34 | 12-25 | 435 | 350 | 210 | |
2.5 | 250 | 650 | 425 | 355 | 320 | 36 | 12-30 | 515 | 415 | 290 | |
2.5 | 300 | 750 | 485 | 410 | 370 | 40 | 16-30 |
|
| 320 | |
2.5 | 350 | 850 | 550 | 470 | 430 | 44 | 16-34 |
|
| 420 |