AWD 110 SPumping speed 106 m³/hUltimate pressure 33 mbar
AWD 400 S 1905100563 without motor, entirely in stainless steel SS 316L
The Atlas Copco AWD 400 S is a two-stage liquid ring vacuum pump with 425 m³/h at 50 Hz (475 m³/h at 60 Hz) and an ultimate pressure of 33 mbar. It replaces the SIHI LPH55320 without modification. Ehrler & Beck supplies it in three material versions.
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- Pumping speed 425 m³/h 50 Hz 475 m³/h 60 Hz
- Ultimate pressure 33 mbar
- Rated motor power 15 kW 50 Hz 18.5 kW 60 Hz
| Variant | Part number |
|---|---|
| without motor, Stainless steel fitted (housing grey cast iron, impeller SS 304) | 1905100561 |
| without motor, entirely in stainless steel SS 304 | 1905100562 |
| without motor, entirely in stainless steel SS 316L (selected) | 1905100563 |
Atlas Copco AWD 400 S – two-stage for low inlet pressures
The AWD 400 S delivers 425 m³/h at 50 Hz and 475 m³/h at 60 Hz (dry air) and reaches 33 mbar(a). It is supplied without motor; it is intended for 15 kW at 50 Hz or 25 hp at 60 Hz. Inlet and outlet DN 50, dimensions 911 × 303 × 520 mm (L × W × H), weight 170 kg.Direct replacement for SIHI LPH
The AWD S range (since 2025) replaces the earlier AWD 200 to 1680 and, according to Atlas Copco, is fully compatible in dimensions and performance with the SIHI LPH range – the AWD 400 S fits in place of a SIHI LPH55320.Applications
Two-stage for continuous operation below 200 mbar(a) – especially vacuum distillation, drying, degassing and evaporator duty.Variants of the AWD 400 S
Ehrler & Beck supplies the AWD 400 S as a stainless steel fitted version (grey cast iron with stainless steel impeller), entirely in SS 304 or in SS 316L.Features of the AWD range
- Two-stage design – highest efficiency at the low-pressure end of the rough vacuum range
- Works over the entire vacuum range down to 33 mbar(a)
- Water as operating liquid: isothermal compression, insensitive to vapour, condensate, liquid carry-over and particles
- Robust design with few housing joints, external bearings, mechanical seals
- Materials selectable to suit the process medium
| Pumping speed 50Hz | 425 |
|---|---|
| Pumping speed 60Hz | 475 |
| Ultimate pressure | 33 |
| Rated motor power 50Hz | 15 |
| Rated motor power 60Hz | 18.5 |
| Weight | 170 |
| Length | 91.1 |
| Width | 30.3 |
| Height | 52 |
| Inlet connection flange | DN 50 |
| Outlet connection flange | DN 50 |
| Cooling method | Water cooling |
| Oil type | Oil-free |
Convert units: vacuum and pressure units · Nm³/h to m³/h
Additional technical data
| Technical data | Value |
|---|---|
| Design | Two-stage liquid ring vacuum pump, without motor |
| Pumping speed (dry) 50 Hz / 60 Hz | 425 / 475 m³/h |
| Ultimate pressure | 33 mbar(a) |
| Motor power | 15 kW (50 Hz) / 25 hp (60 Hz) |
| Speed 50 Hz / 60 Hz | 1450 / 1750 rpm |
| Inlet / outlet | DN 50 |
| Operating water connection | 1" BSP female |
| Max. vibration severity | 4.5 mm/s |
| Dimensions L × W × H | 911 × 303 × 520 mm |
| Weight | 170 kg |
| Materials | Stainless steel fitted (housing and port plate grey cast iron, impeller SS 304, shaft carbon steel), SS 304 or SS 316L; mechanical seal SiC/carbon/FKM |
| Replacement | direct replacement for SIHI LPH55320 (dimensions and performance compatible according to Atlas Copco) |
AWD 110 SPumping speed 106 m³/hUltimate pressure 33 mbarAWD 140 SPumping speed 145 m³/hUltimate pressure 33 mbarAWD 180 SPumping speed 186 m³/hUltimate pressure 33 mbarAWD 300 SPumping speed 270 m³/hUltimate pressure 33 mbarAWD 350 SPumping speed 342 m³/hUltimate pressure 33 mbarAWD 500 SPumping speed 501 m³/hUltimate pressure 33 mbarAWD 600 SPumping speed 616 m³/hUltimate pressure 33 mbarAWD 800 SPumping speed 862 m³/hUltimate pressure 33 mbarAWD 1200 SPumping speed 1,252 m³/hUltimate pressure 33 mbarAWD 1600 SPumping speed 1,589 m³/hUltimate pressure 33 mbarAWD 1960Pumping speed 2,000 m³/hUltimate pressure 33 mbarAWD 3280Pumping speed 3,300 m³/hUltimate pressure 33 mbar
