ADI’s gas sampling Dia-Vac® Pumps can pass your gas at the speed of need! Due to an increased interest in reducing the pressure, vacuum and/or flow on the Dia-Vac® pumps, our engineers designed a modified eccentric design. This allows you to customize your Dia-Vac® pump to meet your application requirements while at the same time increasing the diaphragm and bearing life. The standard eccentric size for the R-Series Dia-Vac® is 0.222. Please note that the chart below is not meant to be read as a combination of pressure and vacuum at the same time, only pressure or vacuum.
R-Series Explosion proof Dia-Vac® pumps are used worldwide in hazardous atmospheres within the petroleum, refinery, chemical, utility and pharmaceutical industries. These durable, leak-free diaphragm gaseous sampling pumps are also an ideal choice for OEM customers and can be custom designed and built for your specific application.
The Double Head R-Series Dia-Vac® pump can provide flow rates up to 50 SLPM, with ultimate vacuum as low as 28 InHg.
R-Series Single Head Dia-Vac®
Flow Averages
(Please click on individual Model # for actual performance curves)
Model # | PSIG (Max Pressure) | Bar Gauge (Max Pressure) | InHg Gauge (Ultimate Vacuum) | Mbar Gauge (Ultimate Vacuum) | SCFM (Max Flow) | SLPM (Max Flow) |
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R061 | 6.1 | 0.42 | 8.4 | 284 | 0.33 | 9.4 | |
R061- Metric |
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R081 | 9.6 | 0.66 | 11.8 | 399 | 0.47 | 13.2 | |
R081- Metric |
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R101 | 11 | 0.75 | 13.9 | 470 | 0.47 | 13.4 | |
R101- Metric |
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R121 | 17 | 1.17 | 16 | 541 | 0.57 | 16.4 | |
R121- Metric |
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R151 | 22 | 1.52 | 18.8 | 636 | 0.66 | 18.9 |
R151.pdf |
R151- Metric |
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R181 | 34.2 | 2.36 | 21.4 | 725 | 0.77 | 21.8 | |
R181- Metric |
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R201 | 45.1 | 3.11 | 22.6 | 765 | 0.86 | 24.5 | |
R201- Metric |
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R221 | 55 | 3.8 | 24 | 813 | 0.95 | 27 | |
R221- Metric |
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R251 | 71 | 4.9 | 24.6 | 833 | 0.98 | 27.8 | |
R251- Metric |
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R271 | 71 | 4.9 | 25.2 | 853 | 1.06 | 30.2 | |
R271- Metric |
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R-Series Double Head Dia-Vac®
Flow Averages
(Please click on individual Model # for actual performance curves)
Model # | PSIG (Max Pressure) | Bar Gauge (Max Pressure) | InHg Gauge (Ultimate Vacuum) | Mbar Gauge (Ultimate Vacuum) | SCFM (Max Flow) | SLPM (Max Flow) |
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R202-60Hz | 46.5/75.0 | 3.20/5.17 | 23.3/28.3 | 789/958 | 1.71/1.01 | 48.5/28.7 | |
R202-60Hz-Metric |
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R202-50Hz |
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R202-50Hz-Metric |
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R222-60Hz | 55.0/75.0 | 3.79/5.17 | 24.0/28.6 | 812/968 | 1.80/0.98 | 51.1/27.8 | |
R222-60Hz-Metric |
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R222-50Hz |
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R222-50Hz-Metric |
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R252-60Hz | 69.8/75.0 | 4.81/5.17 | 25.1/28.9 | 850/978 | 2.06/1.12 | 58.4/31.8 | |
R252-60Hz-Metric |
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R252-50Hz |
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R252-50Hz-Metric |
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R272-60Hz | 75.0/75.0 | 5.17/5.17 | 25.3/29.2 | 856/988 | 2.37/1.24 | 67/35 | |
R272-60Hz-Metric |
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R272-50Hz |
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R272-50Hz-Metric |
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R-Series Quad Head Dia-Vac®
Flow Averages
(Please click on individual Model # for actual performance curves)
Model # | PSIG (Max Pressure) | Bar Gauge (Max Pressure) | InHg Gauge (Ultimate Vacuum) | Mbar Gauge (Ultimate Vacuum) | SCFM (Max Flow) | SLPM (Max Flow) |
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R224-60Hz | 70/75 | 4.80/5.17 | 24.8/29.4 | 839/995 | 3.53/0.98 | 100/27.8 | |
R224-60Hz-Metric |
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R224-60Hz-Metric-Deep-Vac |
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R224-50Hz |
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R224-50Hz-Metric |
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R224-50Hz-Metric-Deep-Vac |
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R254-60Hz | 75.0/75.0 | 5.17/5.17 | 24.9/29.4 | 839/995 | 3.8/1.1 | 108/31.4 | |
R254-60Hz-Metric |
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R254-60Hz-Metric-Deep-Vac |
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R254-50Hz |
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R254-50Hz-Metric |
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R254-50Hz-Metric-Deep-Vac |
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Example: RVA2-FT-AA1 = High Vacuum Dia-Vac® pump, 316 ss heads, Teflon/EPDM diaphragms, 115v 60Hz motor.