Edwards EHR2190Pumping speed 190.8 m³/hUltimate pressure 30 mbar
Edwards EHR2390 Bareshaft (without motor), material: grey cast iron, ductile iron impellers (“CI”)
The Edwards EHR2390 is a two-stage liquid ring vacuum pump in bareshaft design with 388.8 m³/h at 50 Hz. Ehrler & Beck advises on selection and service.
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- Pumping speed 388.8 m³/h 50 Hz 439.2 m³/h 60 Hz
- Ultimate pressure 30 mbar
- Rated motor power 11 kW 50 Hz 11 kW 60 Hz
| Variant | Part number |
|---|---|
| Bareshaft (without motor), material: grey cast iron, ductile iron impellers (“CI”) (selected) | A80020000 |
| Bareshaft (without motor), material: grey cast iron, stainless steel impellers 316 (“SS fitted”) | A80025000 |
| Bareshaft (without motor), material: stainless steel 316 (“SS”) | A80021000 |
Edwards EHR2390 – two-stage liquid ring vacuum pump
The EHR2390 delivers 388.8 m³/h at 50 Hz and 439.2 m³/h at 60 Hz. Liquid ring pumps compress the gas in a rotating liquid ring; the operating liquid carries away the heat of compression, and vapours and entrained liquid are tolerated.Features
- Two-stage design with valve plates
- Bareshaft version for drive via coupling or belt
- Materials: grey cast iron, grey cast iron with stainless steel impellers or stainless steel 316
- Mechanical seals flushed via internal channels – only operating liquid required
Typical applications
Edwards uses the SHR and EHR pumps, among other things, in systems for condenser air extraction in power stations.Versions of the Edwards EHR2390
The 3 versions differ in material.Advice and service
Ehrler & Beck supports you in selecting material, drive and operating liquid and carries out maintenance and repair.| Pumping speed 50Hz | 388.8 |
|---|---|
| Pumping speed 60Hz | 439.2 |
| Ultimate pressure | 30 |
| Rated motor power 50Hz | 11 |
| Rated motor power 60Hz | 11 |
| Weight | 140 |
| Length | 82 |
| Width | 39 |
| Height | 46 |
| Inlet connection flange | DN50 / 2" ANSI |
| Outlet connection flange | DN50 / 2" ANSI |
| Noise level | 80 dB(A) |
| Cooling method | Water cooling |
| Oil type | Oil-free |
Additional technical data
| Technical data | Value |
|---|---|
| Design | Two-stage liquid ring vacuum pump, bareshaft version for drive via coupling or belt |
| Nominal pumping speed (Edwards shop) | 388.8 m³/h (50 Hz), 439.2 m³/h (60 Hz) |
| Ultimate pressure (Edwards shop) | 30 mbar |
| Max. differential pressure | 1.1 bar |
| Max. speed | 1800 min⁻¹ |
| Max. operating liquid quantity | 1.8 m³/h |
| Drive power (Edwards shop) | 11 kW (50 Hz), 11 kW (60 Hz) |
| Sound pressure level | ≤ 80 dB(A) ± 3 dB (1 m, free field) |
| Vibration | 4.5 mm/s |
| Connections (Edwards shop) | Inlet and outlet ports DN50 / 2" ANSI |
| Dimensions L × W × H (Edwards shop) | 820 × 390 × 460 mm |
| Weight (Edwards shop) | 140 kg |
| Operating liquid | Water or another non-flammable liquid compatible with the process gas and materials |
| Materials | Housing grey cast iron or stainless steel 316, impellers ductile iron or stainless steel 316, shaft stainless steel; mechanical seals SiC/carbon |
| Bearings | Grease to DIN 51825 K2K-30 |
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