Please find below our Vacuum Torr to mmHgA to psia to HgC to Atm to H2O (a) to H2O (v) to Kg/cm2 to kPa to mBar vacuum conversion table.
Valves designed to be able to control vacuum or suction are specifically designed for the application and standard valves should not be used. Typically for this application a direct acting & assisted lift solenoid valve with NBR seals should be used as EPDM and Viton can stick and PTFE tends to easily leak especially for larger sizes above 1/2" as PTFE does has very limited elasticity.
| Torr | mmHgA | psia | "HgA | "HgV | Atm. | "H2O(a) | "H2O(v) | kg/sq.cm | kPa | mBar |
|---|---|---|---|---|---|---|---|---|---|---|
| 760 | 760 | 14.7 | 29.92 | 0.00 | 1.00 | 406.8 | 0.0 | 1.03 | 101.31 | 1013.3 |
| 700 | 700 | 13.54 | 27.56 | 2.36 | 0.92 | 374.7 | 32.1 | 0.95 | 93.31 | 933.3 |
| 600 | 600 | 11.61 | 23.62 | 6.30 | 0.79 | 321.2 | 85.6 | 0.82 | 79.98 | 800.0 |
| 500 | 500 | 9.67 | 19.69 | 10.24 | 0.66 | 267.7 | 139.2 | 0.68 | 66.65 | 666.7 |
| 400 | 400 | 7.74 | 15.75 | 14.17 | 0.53 | 214.1 | 192.7 | 0.54 | 53.32 | 533.3 |
| 300 | 300 | 5.80 | 11.81 | 18.11 | 0.39 | 160.6 | 246.2 | 0.41 | 39.99 | 400.0 |
| 250 | 250 | 4.84 | 9.84 | 20.08 | 0.33 | 133.8 | 273.0 | 0.34 | 33.33 | 333.3 |
| 200 | 200 | 3.87 | 7.87 | 22.05 | 0.26 | 107.1 | 299.8 | 0.27 | 26.66 | 266.7 |
| 175 | 175 | 3.38 | 6.89 | 23.03 | 0.23 | 93.7 | 313.2 | 0.24 | 23.33 | 233.3 |
| 150 | 150 | 2.90 | 5.91 | 24.02 | 0.20 | 80.3 | 326.5 | 0.20 | 20.00 | 200 |
| 125 | 125 | 2.42 | 4.92 | 25.00 | 0.16 | 66.9 | 339.9 | 0.17 | 16.66 | 166.7 |
| 100 | 100 | 1.93 | 3.94 | 25.98 | 0.13 | 53.5 | 353.3 | 0.14 | 13.33 | 133.3 |
| 90 | 90 | 1.74 | 3.54 | 26.38 | 0.12 | 48.2 | 358.7 | 0.12 | 12.00 | 120.0 |
| 80 | 80 | 1.55 | 3.15 | 26.77 | 0.11 | 42.8 | 364.0 | 0.11 | 10.66 | 106.7 |
| 70 | 70 | 1.35 | 2.76 | 27.17 | 0.09 | 37.5 | 369.4 | 0.10 | 9.33 | 93.3 |
| 60 | 60 | 1.16 | 2.36 | 27.56 | 0.08 | 32.1 | 374.7 | 0.08 | 8.00 | 80.0 |
| 51.7 | 51.7 | 1.00 | 2.04 | 27.89 | 0.07 | 27.7 | 379.2 | 0.07 | 6.89 | 68.9 |
| 50 | 50 | 0.97 | 1.97 | 27.95 | 0.07 | 26.8 | 380.1 | 0.07 | 6.67 | 66.7 |
| 40 | 40 | 0.77 | 1.57 | 28.35 | 0.05 | 21.4 | 385.4 | 0.05 | 5.33 | 53.3 |
| 30 | 30 | 0.58 | 1.18 | 28.74 | 0.04 | 16.1 | 390.8 | 0.04 | 4.00 | 40.0 |
| 25.4 | 25.4 | 0.49 | 1.00 | 28.92 | 0.03 | 13.6 | 393.2 | 0.03 | 3.39 | 33.9 |
| 25 | 25 | 0.48 | 0.98 | 28.94 | 0.03 | 13.4 | 393.5 | 0.03 | 3.33 | 33.3 |
| 20 | 20 | 0.39 | 0.79 | 29.13 | 0.03 | 10.7 | 396.1 | 0.03 | 2.67 | 26.7 |
| 15 | 15 | 0.29 | 0.59 | 29.33 | 0.02 | 8.0 | 398.8 | 0.02 | 2.00 | 20.0 |
| 10 | 10 | 0.19 | 0.39 | 29.53 | 0.01 | 5.4 | 401.5 | 0.01 | 1.33 | 13.3 |
| 7.5 | 7.5 | 0.15 | 0.30 | 29.63 | 0.01 | 4.0 | 402.8 | 0.01 | 1.00 | 10.0 |
| 5 | 5 | 0.10 | 0.20 | 29.72 | 0.01 | 2.7 | 404.2 | 0.01 | 0.67 | 6.7 |
| 2.5 | 2.5 | 0.05 | 0.10 | 29.82 | 0.00 | 1.3 | 405.5 | 0.00 | 0.33 | 3.3 |
| 1 | 1 | 0.02 | 0.04 | 29.88 | 0.00 | 0.5 | 406.3 | 0.00 | 0.13 | 1.3 |
| 0.75 | 0.75 | 0.01 | 0.03 | 29.89 | 0.00 | 0.4 | 406.4 | 0.00 | 0.10 | 1.0 |
| 0.5 | 0.5 | 0.01 | 0.02 | 29.90 | 0.00 | 0.3 | 406.6 | 0.00 | 0.07 | 0.7 |
| 0.25 | 0.25 | 0.00 | 0.01 | 29.91 | 0.00 | 0.1 | 406.7 | 0.00 | 0.03 | 0.3 |
| 0.1 | 0.1 | 0.00 | .000 | 29.92 | 0.00 | 0.1 | 406.8 | 0.00 | 0.01 | 0.1 |