Edwards LR1A700Pumping speed 601.2 m³/hUltimate pressure 33 mbar
Edwards LR1A1200 Bareshaft (without motor), material: grey cast iron (“CI”, Cast iron)
The Edwards LR1A1200 is a single-stage liquid ring vacuum pump in bareshaft design with 1080 m³/h at 50 Hz. Ehrler & Beck advises on selection and service.
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- Pumping speed 1,080 m³/h 50 Hz 1,321.2 m³/h 60 Hz
- Ultimate pressure 33 mbar
- Rated motor power 37 kW 50 Hz 45 kW 60 Hz
| Variant | Part number |
|---|---|
| Bareshaft (without motor), material: grey cast iron (“CI”, Cast iron) (selected) | LR1A1200BA10 |
| Bareshaft (without motor), material: grey cast iron with stainless steel impeller (“SS fitted”) | LR1A1200BA50 |
| Bareshaft (without motor), material: stainless steel (“SS”) | LR1A1200BA70 |
Edwards LR1A1200 – single-stage liquid ring vacuum pump
The LR1A1200 delivers 1080 m³/h at 50 Hz and 1321.2 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. They tolerate vapours, moisture and entrained liquid.Features
- Single-stage design with valve plate
- Bareshaft version for drive via coupling or belt
- Materials: grey cast iron, grey cast iron with stainless steel impeller or stainless steel
- Mechanical seals flushed via internal channels – only operating liquid required
Versions of the Edwards LR1A1200
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 | 1,080 |
|---|---|
| Pumping speed 60Hz | 1,321.2 |
| Ultimate pressure | 33 |
| Rated motor power 50Hz | 37 |
| Rated motor power 60Hz | 45 |
| Weight | 515 |
| Length | 109 |
| Width | 56 |
| Height | 84 |
| Inlet connection flange | DN125 |
| Outlet connection flange | DN125 |
| Noise level | 82 dB(A) |
| Cooling method | Water cooling |
| Oil type | Oil-free |
Additional technical data
| Technical data | Value |
|---|---|
| Design | Single-stage liquid ring vacuum pump, bareshaft version for drive via coupling or belt |
| Nominal pumping speed (Edwards shop) | 1080 m³/h (50 Hz), 1321.2 m³/h (60 Hz) |
| Ultimate pressure (Edwards shop) | 33 mbar |
| Max. differential pressure | 1.3 bar |
| Max. speed | 1300 min⁻¹ |
| Drive power (Edwards shop) | 37 kW (50 Hz), 45 kW (60 Hz) |
| Sound pressure level | ≤ 82 dB(A) ± 3 dB (1 m, free field) |
| Vibration | 4.5 mm/s |
| Connections (Edwards shop) | Inlet and outlet ports DN125 |
| Dimensions L × W × H (Edwards shop) | 1090 × 560 × 840 mm |
| Weight (Edwards shop) | 515 kg |
| Operating liquid | Water or another non-flammable liquid compatible with the process gas and materials |
| Materials | Grey cast iron (ductile iron impeller), grey cast iron with stainless steel impeller or stainless steel; mechanical seals silicon carbide against carbon, FKM; valve plate PTFE |
| Bearings | Grease to DIN 51825 K2K-30 |
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