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Sullair · Oil-free rotary screw

DSP SeriesOil free rotary screw air compressor

The DSP Series brings advanced oil-free operations right where it is needed: your facility! Built on Hitachi engineering, the DSP is designed to supply oil-free air reliably and efficiently, today and tomorrow.

  • Innovative Air End Design
  • Patented Oil Mist Remover
  • Motorized Isolation Valve
Sullair DSP90 oil-free rotary screw air compressor
117 to 1,303cfmFlow, 3.3 to 36.9 m³/min
125psiPressure, 8.6 bar
30 to 300hpPower, 22 to 240 kW

Why the DSP Series

Features & benefits

Certified Class 0 oil-free air. Optimized for energy efficiency.

Innovative Air End Design

  • Patented taper rotor design optimized for efficiency
  • Stainless steel coating robotically applied to rotors in both 1st and 2nd stages provides superior corrosion resistance and durability
  • Patented PTFE-free rotary coating designed for long life
  • Coating specifically engineered to help ensure rotor tolerances remain consistent, maximizing discharge capacity over the life of the unit
  • Stator housing coated to provide additional corrosion protection

Patented Oil Mist Remover

  • An environmentally friendly solution to recapture gearcase oil mists
  • Helps ensure oil-free air compression
  • Recycles gearcase oil to reduce oil top offs needed
  • Helps promote a cleaner production environment

Motorized Isolation Valve

  • Automatically closes compressed air discharge when DSP shuts off, protecting the compressor from condensate backflow
Sullair DSP90 oil-free rotary screw air compressor

Inside the machine

Inside the DSP Series

Package Designed to Optimize Energy Efficiency and Oil-Free Operation
  • VSD models feature a Patented No Inlet Valve Design
  • Eliminates negative pressure at unloading, helping increase shaft seal reliability
  • Fixed speed models feature patented 3- or 5-way solenoid valve
  • Interstage air purging
  • Provides energy savings when unloading
  • Patented High Pre-Cooler Design
  • Redundant cooler helps prevent thermal fatigue and cooler failure
  • Helps reduce moisture content in compressed air
Integrated Design for Maximum User Benefits
  • Certified Class 0 oil-free air
  • Highly efficient cooling
  • Multi-stage cooling reduces ambient temperature out
  • Receiver tank helps dissipate heat while reducing compressor starts/stops
  • Air pressures to 145 PSIG
  • Extremely quiet
  • Sound levels as low as 48 dB(A)
  • Full enclosure standard
  • Mechanical and electrical vibration isolation
  • Designed to be placed at the point of air need
  • Compact design reduces floor space needed
  • Maintenance-friendly
  • Easy accessibility for inspection and maintenance
Key Features
  • Wye-Delta or VSD Starter
  • Phase Monitor
  • Altitude Capacity: up to 9000 feet
  • Oversized motor options available for peak usage needs

Technical specifications

Models & specs

60 Hz. Fixed speed and variable speed models, air-cooled and water-cooled.

ModelDriveMotor hpkWpsigbargcfmm³/min
DSP2209AYFixed speed30221258.61173.3
DSP3009AYFixed speed40301258.61414.0
DSP3709AYFixed speed50371258.61664.7
DSP4509AYFixed speed60451258.62306.5
DSP5509AYFixed speed75551258.62727.7
DSP7509AYFixed speed100751258.639211.1
DSP9009AYFixed speed125901258.654415.4
DSP11009AYFixed speed1501101258.661117.3
DSP13210AYFixed speed1751321258.674221.0
DSP14510AYFixed speed2001451258.680522.8
DSP16010AYFixed speed2151601258.689425.3
DSP20010AYFixed speed2502001258.61,16933.1
DSP24010AYFixed speed3002401258.61,29636.7
DSP4509WYFixed speed60451258.62366.7
DSP5509WYFixed speed75551258.62797.9
DSP7509WYFixed speed100751258.639911.3
DSP9009WYFixed speed125901258.655115.6
DSP11009WYFixed speed1501101258.662217.6
DSP13210WYFixed speed1751321258.677021.8
DSP14510WYFixed speed2001451258.683723.7
DSP16010WYFixed speed2151601258.692526.2
DSP20010WYFixed speed2502001258.61,16933.1
DSP24010WYFixed speed3002401258.61,30336.9
DSP3709AVVariable speed50371258.61624.6
DSP5509AVVariable speed75551258.62727.7
DSP7509AVVariable speed100751258.638510.9
DSP9009AVVariable speed125901258.654415.4
DSP11009AVVariable speed1501101258.661117.3
DSP5509WVVariable speed75551258.62838.0
DSP7509WVVariable speed100751258.640311.4
DSP9009WVVariable speed125901258.655115.6
DSP11009WVVariable speed1501101258.662217.6
DSP16009WVVariable speed2151601258.692526.2
DSP24009WVVariable speed3002401258.61,30336.9
Source: Sullair DSP Series brochure. A HOLT specialist confirms the model and configuration for your application.

3

Year package warranty

All DSP Series Compressors feature a 3-year package warranty

Our products are in stock and ready to ship!

HOLT technician checking gauges on a plant compressed air line

Why buy it from HOLT

The machine is half of it.

  • Sized right. AirMaster+ and CAGI certified specialists size the compressor to your demand profile.
  • Installed right. Piping, dryers, controls and commissioning by our own team.
  • Backed 24/7. Texas branches, genuine parts and factory-trained technicians.
  • Built around your site. Need it on a skid, in a classified area or offshore? We package it.

Talk to a specialist

Need industrial air? You need HOLT.

Tell us what you’re running, what you’re producing and where. A specialist responds fast with equipment, a custom build or a service plan that fits.

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