Edwards LR1D Series Single-Stage
Models: LR1D0035 – LR1D2040 | Manufacturer: Edwards
The Edwards LR1D Series is designed for pumping dry or wet gases in humid, dirty, and high-capacity industrial applications. Its single-stage liquid ring design combines a high-efficiency impeller with advanced compression technology to deliver reliable vacuum performance from atmospheric pressure down to ultimate vacuum, with strong liquid carryover tolerance for demanding processes.
Product Specifications
Pump Type
Single-Stage Liquid Ring
Nominal Capacity
18 to 1,038 ACFM (31–1,764 m³/h)
Ultimate Pressure
29 "HgV (30 mbar(a))
Motor Power
1.5 to 75 hp (1.1–56 kW)
Configurations
Long-Coupled, Monoblock, Bareshaft
Operating Modes
Once-Through / Partial Recirc / Total Recovery
Material Options
All Iron / SS Fitted / SS Full
Water Savings
Up to 95% with Total Recovery
LR1D Design and Features
High-efficiency impeller design supports efficient liquid ring vacuum operation
State-of-the-art compression technology provides reliable vacuum performance
High tolerance to liquid carryover suits condensable processes
State-of-the-art bearing design allows reduced clearances and improved suction
Variable area discharge porting optimises efficiency across inlet pressures
Motor-mounted versions use economical UL/CS EPACT-compliant motors
Sturdy bearing pedestal mounts to standard NEMA, C-face motors
Mechanical seals supplied as standard
Robust construction supports reliable, low-maintenance operation
Modular package design in once-through, partial recirc, and total recovery configs
Stainless steel fitted and full construction options for material flexibility
Long-coupled, monoblock, and bareshaft configurations for different installs
Standard accessories provide easy completion of installation
Total recovery operation reduces water consumption by up to 95%
Applications
Automotive Industry
Brick Extrusion
Chemical Industries
Cement and Allied Products
Food Processing
General Manufacturing
Metalwork Industries
Mining
Oil and Gas
Paper and Allied Products
Petroleum Industries
Plastics
Power and Utilities
LR1D Configurations and System Options
| Configuration | Description |
|---|---|
| Long-Coupled (LR1D-C) | Long-coupled pump configuration |
| Monoblock (LR1D-M) | Monoblock pump configuration |
| Bareshaft (LR1D-B) | Bareshaft pump configuration |
| Once-Through | Pump module configuration using once-through operation |
| Partial Recirculation | Pump module configuration using partial recirculation |
| Total Recovery | Pump module configuration designed for water recovery |
The LR1D series is available as pre-engineered plug-and-play modules and can be installed in single- or multi-pump arrangements. Edwards also offers engineered-to-order systems for more complex process and project requirements.
LR1D Materials of Construction
| Component | All Iron | SS Fitted | SS Full |
|---|---|---|---|
| Casing | Cast iron | Cast iron | SS316 |
| Port Plate | Cast iron | Cast iron | SS316 |
| Impeller | Ductile iron | SS316 | SS316 |
| Shaft | SS420 | SS420 | SS316 |
| Mechanical Seal | Carbon/Carbide/Viton | Carbon/Carbide/Viton | Carbon/Carbide/PTFE |