Two-Stage Rotary Screw Air Compressors

Sullair Two-Stage Air Compressors feature a superior end-to-end design for optimum efficiency and power savings. 

Two-Stage Standard Pressure Models

• Multi-Stage Air-Fluid Separation
  • Dual nested Optimizer™ separator elements, reduce fluid carryover to a maximum of 1 ppm
  • Reduced carryover lowers make-up fluid costs
  • Pleated Optimizer elements lower initial pressure drop for greater efficiency and extends element life
  • Easy to change with built-in lid lifting device
• Fiberglass Fluid Filter
  • Aircraft-quality media provides better filtration
  • Up to 20% more efficient than conventional paper elements
  • Lengthens life of the compressor
• Optimalair® Heavy-Duty Air Intake Filter
  • Includes remote air intake connection
  • Provides finest inlet filtration in the industry (99.95%+ overall efficiency/0.4 micron)
  • Keeps fluid clean and extends life of other internal components
  • Reduces pressure drop throughout the operating life, resulting in energy savings
• Two-Stage Compressor Air End
  • Delivers more air
  • Reduces power consumption
  • Extends air end bearing life
• Enhanced Serviceability for Air-Cooled Oil Cooler and Aftercoolers
  • Easy to remove panels provide access for cleaning coolers
• Motor Coupled to Air End Through Non-Lubricated, Flexible Coupling
  • Allows use of standard NEMA frame motor
  • Simplifies installation and start-up
• Variable Capacity Control System Featuring Spiral Valve Technology
  • Lowers part-load operating costs
  • Reduces cycling duty on package
  • Maintains consistent plant pressure
  • Simple control
  • Reduces bearing load
• Sullair Supervisor™ Controller
  • Computer-compatible microprocessor controller has simple graphic illustration of monitored functions and an easy-to-read keypad
  • Constant readout of pressure and temperature
  • On-demand readout of all operating and maintenance conditions
  • Monitors key functions and safety shutdowns
  • Power failure auto restart
  • Dual control, provides automatic start-stop operation
  • Lead-lag and sequencing with multiple compressors
  • Service and preventive maintenance schedule
  • Hours are recorded for “Run,” “Loaded” and “Consumable Parts”
  • Fault history with sensor readings
  • “Help” key provides built-in troubleshooting
• Easy Maintenance
  • Access to all critical components even with a sound enclosure installed
• Time Proven End-to-End Design
  • Reduces pressure drop through stages
  • Easy serviceability
• NEMA 4
  • Wye-Delta starter for softer start
• Bearing Fluid Reservoirs
  • Ensure that fluid is available at start-up
  • Extend air end life
• Genuine Sullube® Factory Fill
  • A 10,000-hour extended-life synthetic fluid powered by Dow technology, Sullube has been used in more than 50,000 compressors worldwide
• Sullair 10-Year Diamond Warranty*

Two-Stage Extreme Pressure Models

• Dependable, high-performance two-stage air end for maximum power savings
• 460v motor coupled to air end via non-lubricated, flexible coupling
  • Allows use of Standard NEMA frame motor
  • Flange-mounted for positive alignment
• Sullair Supervisor Controller
  • Easy pressure adjustment
  • Capacity modulation range 100 to 40%
• Heavy-duty inlet air filter
  • Two-stage, dry type
    • Inside safety element
    • Differential pressure indicator
• Air-fluid separation
  • ASME psi rated tank
    • ASME pressure relief valve
  • Pleated air-fluid separator element for lower initial pressure drop
• Cooling
  • Air-cooled units use mounted and piped aftercooler with quiet fan
  • Water-cooled units feature an air-in-shell, water-in-tube aftercooler design
  • LS-20TS are equipped with Remote Coolers