H71W型對夾式止回閥主要技術參數(shù)：
| 型號 | 公稱壓力PNMPa | 試驗壓力PSMPa | 工作溫度℃ | 適用介質(zhì) | |
| 殼體 | 密封 | ||||
| H71W-16T | 1.6 | 2.4 | 1.76 | ≤200 | 水、蒸體、油品等 |
| H71H-25Q | 2.5 | 3.75 | 2.75 | ≤235 | |
| H71W-25H | ≤300 | ||||
| H71W-25P | ≤200 | 硝酸等腐蝕性介質(zhì) | |||
| H71W-40H | 4.0 | 6.0 | 4.4 | ≤300 | 水、蒸體、油品等 |
| H71W-40P | ≤200 | 硝酸等腐蝕性介質(zhì) | |||
| 規(guī)格型號 | 閥體 | 閥瓣 | 彈簧 |
| RH71W-25H、RH71W-40H | 2Cr13 | 1Cr13 | 1Cr18 Ni9Ti |
| RH71W-16P、RH71W-25P | ZG1Cr18 Ni9Ti | 1Cr18 Ni9Ti | 1Cr18 Ni9Ti |
| 壓力 MPa | 公稱通徑 DN | 尺寸（mm） | |||||
| L | D1 | D2 | D3 | D4 | D5 | ||
| PN1.0MPa PN1.6MPa | 15 | 16 | 52 | 15 | 24 | 31 | 40 |
| 20 | 19 | 62 | 19 | 30 | 40 | 50 | |
| 25 | 22 | 72 | 24 | 35 | 47 | 58 | |
| 32 | 28 | 83 | 31 | 46 | 56 | 68 | |
| 40 | 31.5 | 93 | 39 | 55 | 66 | 78 | |
| 50 | 40 | 108 | 48 | 65 | 78 | 90 | |
| 65 | 46 | 128 | 62 | 80 | 95 | 110 | |
| 80 | 50 | 142 | 76 | 96 | 110 | 128 | |
| 100 | 60 | 162 | 95 | 115 | 132 | 150 | |
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