EDWARDS brand guide / Product family
Compare E2S5 and E2S12 using effective pumping speed, gas-ballast performance and the documented 50 Hz motor builds.
| Specification | Details |
|---|---|
| E2S5 | 5.1 m³/h effective; 5.8 m³/h nominal |
| E2S12 | 12 m³/h effective; 14.2 m³/h nominal |
The January 2026 manual gives 0.002 mbar ultimate total pressure without gas ballast. Gas-ballast settings change both attainable pressure and water-vapour capacity. These are standard oil-sealed pumps for compatible gases, not universal chemical-duty pumps.
The manual lists 220–230 V single-phase and specific three-phase 50 Hz references. Its voltage labels differ between electrical and ordering tables; confirm the exact nameplate and connection. Single- and three-phase versions have different outline dimensions. Check cooling clearance, oil access, inlet protection and exhaust routing for the installation.
Compare Edwards RV pumps for selectable high-vacuum/high-throughput operation and nEXT turbomolecular pumps for the high-vacuum stage of an appropriate backing arrangement.
Compare values with their stated gas, frequency and configuration conditions. A blank specification means it needs confirmation. Listed equipment is subject to a quotation; inclusion here does not indicate stock.
| Model | Electrical supply | Effective pumping speed | Nominal pumping speed |
|---|---|---|---|
| Edwards E2S5 Two-Stage Rotary Vane Vacuum Pump | Single-phase 220–230 V, 50 Hz; three-phase version separately specified | 5.1 m³/h, documented 50 Hz version | 5.8 m³/h, documented 50 Hz version |
| Edwards E2S12 Two-Stage Rotary Vane Vacuum Pump | Single-phase 220–230 V, 50 Hz; three-phase version separately specified | 12 m³/h, documented 50 Hz version | 14.2 m³/h, documented 50 Hz version |
EDWARDS
EDWARDS
Open the model page for its specifications and available manufacturer downloads. Match the full model, suffix and revision to the equipment being supplied. Keep installation limits and performance test conditions with the figure when comparing alternatives.
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Send the process, working pressure, gas, required capacity and electrical supply. For measurement, include the range, connection, output and controller. We can confirm the model, accessories and documentation for your quotation.
Compare the stated conditions as well as the values. A missing specification is not a zero rating; confirm suitability with Girovac.
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