industrial centrifugal air compressors
Polaris® P650
The Polaris P650 centrifugal compressor delivers reliable, energy-efficient, oil-free compressed air for high-capacity industrial applications.
Providing airflow capacities from 5,000 to 10,100 CFM, the P650 combines proven aerodynamic design with a compact, plug-and-play configuration to simplify installation and optimize energy efficiency. Flexible control options and customizable configurations help meet specific operating requirements while supporting efficient performance across a wide turndown range.
As part of FS-Elliott’s Polaris series, the P650 offers manufacturers a versatile compressed air solution with heat-of-compression (HOC) drying capabilities and maintenance-friendly features designed to reduce operating costs and support long-term equipment reliability.
Performance & Specifications
Match the P650 to your operating requirements, then configure the package around your site and process.
FLOW
5,000 – 10,100
CFM
PRESSURE
32 – 145
PSIG
POWER
700 – 2,000
HP
AIR QUALITY
ISO 8573-1 CLASS 0
WEIGHT
18,212 lb
DIMENSIONS (L × W × H)
196 x 90 x 87 in
FLOW
140 – 285
m3/min
PRESSURE
2.2 – 10
barg
POWER
500 – 1,500
kW
AIR QUALITY
ISO 8573-1 CLASS 0
WEIGHT
8,261 kg
DIMENSIONS (L × W × H)
4,959 x 2290 x 2208 mm
Specifications vary by configuration.
Features & Benefits
A compressor’s value extends beyond its rated capacity. The Polaris P650 combines high-flow, oil-free centrifugal compression with a compact, plug-and-play design, advanced controls, and accessible components to help your team maximize efficiency, simplify maintenance, and support reliable long-term operation.
Confidence for Critical Air Demands
The Polaris P650 is engineered to deliver ISO 8573-1 Class 0 oil-free air with the reliability and efficiency required for demanding industrial applications.
Its oil-free air path helps protect processes from compressor oil contamination, while integrated monitoring and control capabilities help operators maintain visibility into compressor performance and condition.
Optimized Design, Efficient Operation
Polaris compressors combine optimized aerodynamics, efficient intercooling, and custom-designed impellers to reduce power requirements and optimize airflow.
Mechanically superior bearings and adjustable inlet guide vanes further support efficient operation by reducing power consumption and responding to changing plant conditions and air demand.
Designed with Service Access in Mind
The horizontally split gear case provides technicians with convenient access to internal components for inspection and service, while the removable airend simplifies maintenance and replacement to help minimize downtime. Straight-through intercooler tubes allow for easier periodic cleaning, and the Regulus® control system helps operators monitor and optimize compressor performance.
These design choices support a practical maintenance strategy for equipment your facility depends on.
Optimize Compressor Performance
Regulus control systems provide intuitive control and real-time visibility into compressor performance, helping operators monitor critical data and respond to changing plant conditions.
Advanced control capabilities simplify operation, support efficiency, and provide the information needed to maintain reliable compressor performance.
Turn Compressor Heat Into Energy Savings
The Polaris P650 supports heat of compression (HOC) drying technology, using heat generated during compression to help dry compressed air. By reducing the energy required for air drying, HOC technology can help improve overall system efficiency and lower operating costs.
Long-Term Support You Can Count On
FS-Elliott supports customers throughout the life of their centrifugal compressor with a standard two-year bumper-to-bumper warranty. For added protection, our optional SteadiAIR® extended warranty provides three additional years of airend coverage, extending protection to a total of five years. Our factory-trained channel partners and global service network provide expert maintenance, technical assistance, and ongoing support.
Our Rapid Response Storage Center provides quick access to replacement airends when needed, while FS-Connect delivers added insight into compressor operation and performance.
From commissioning and service to parts, technical support, and long-term equipment needs, we’re here to help keep your compressor performing reliably for years to come.
Explore Key Components of the Polaris P650
Proven Across Critical Industries
Insights & Resources
How to Specify a Centrifugal Compressor for Reliability and Lower Lifecycle Costs
When specifying a centrifugal compressor, the decisions made during the engineering phase can influence far more than equipment selection. Compressor specifications affect reliability, efficiency, project costs, installation requirements, controls architecture, lead times, and long-term operational performance.
Steel Manufacturer Achieves $40K Annual Savings with Centrifugal Compressor Upgrade
In stainless steel production, uninterrupted uptime isn’t just a target; it’s critical. From powering automation and actuators to supporting cooling and descaling systems, compressed air plays a crucial role in ensuring every part of the mill operates at peak performance.
Discover How to Use Heat Recovery to Cut Your Energy Costs
In industrial operations, compressed air plays a vital role across a range of manufacturing processes. As air undergoes compression, its moisture content rises significantly. Air compressor manufacturers use intercoolers and aftercoolers to remove much of the water from the air stream to address this. Still, the coolers alone do not remove enough moisture for some applications, and an external dryer, particularly heat of compression (HOC) dryers, become critical.