PAP Plus® Engineered Compressor Series
Custom-engineered, oil-free compressed air solutions designed around your operating conditions, project specifications and installation needs.
Engineering Confidence Into Every Specification
Compressed air plays a critical role in industrial processes, instrumentation, and equipment operation. Selecting the right centrifugal compressor requires more than evaluating airflow and pressure. It also involves understanding how the complete compressor package will integrate with your facility, meet application requirements, and support long-term operation.
FS-Elliott’s PAP Plus® engineered centrifugal compressors combine oil-free compression technology, flexible packaging configurations, and maintenance-friendly design. From initial specifications through equipment selection, our engineering team works with you to develop a customized compressed air solution that meets your operational requirements while supporting efficiency, reliability, and long-term performance.
Engineered to Reduce Power Requirements
PAP Plus compressors combine optimized aerodynamics, custom-designed impellers and efficient intercooling to reduce the power required for compression. Component selection is tailored to your specified operating conditions, making energy performance part of the design from the outset.
Adjustable inlet guide vanes help manage airflow and power consumption as demand changes. FS-Elliott evaluates your required flow, discharge pressure, and expected operating profile to balance process requirements with long-term energy costs.
Built on Experience, Designed for Critical Operations
With more than 60 years of compressor engineering experience and a longstanding heritage serving the oil and gas industry, FS-Elliott understands the demands of critical operations. PAP Plus compressors combine robust mechanical design with practical service access to support dependable compressed air delivery.
Mechanical and performance testing verifies the compressor against specified requirements. A fully removable airend, horizontally split gear case, and straight-through intercooler tubes provide access for inspection, service, and periodic cleaning, helping operators maintain performance throughout the equipment’s life.
Protect Equipment, Support Longer Service Life
PAP Plus compressors deliver ISO 8573-1 Class 0 oil-free air, helping protect instrumentation, pneumatic controls and downstream equipment from compressor oil contamination.
By keeping compressor oil out of the airstream, PAP Plus helps reduce oil-related fouling and maintenance concerns, supporting reliable equipment performance and longer service life. Additional air treatment can be configured to meet application requirements for moisture and particulate control.
Monitor Performance, Respond With Confidence
Regulus® Control Systems provide real-time visibility into compressor operating conditions, helping operators monitor key parameters, recognize changes, and respond to alarms.
Capacity control capabilities help match compressor output to changing air demand. With clear operating information and diagnostics, your team can make informed adjustments and plan maintenance to support reliable, efficient operation.
Expert Support From Specification to Startup
FS-Elliott works with EPC teams and plant operators to define package requirements, coordinate technical documentation, and address applicable API and JIP 33 specifications.
Dedicated project support helps align equipment interfaces, controls, and milestones throughout engineering, installation, and commissioning.
PAP Plus Series
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.
Boosting LNG Production Efficiency with FS-Elliott’s PAP Plus Compressor
FS-Elliott, a global leader in centfigual compressor technology, delivers high-performance air solutions engineered to optimize industrial operations. In the LNG production, where reliability and precision are paramount, the PAP Plus compressor delivers exceptional customization options and unwavering reliability. In this blog post, we explore the key features of the PAP Plus® compressor and its impact on enhancing LNG plant efficiency and reducing downtime
API 614 and API 672 Air Compressor Standards Guide
Compressed air is often called the “4th utility” after electricity, water, and gas, making reliable air compression a critical part of any industrial process. The loss of compressed air can result in costly unplanned downtime, resulting in hundreds of thousands or even millions of dollars in lost production per day. This is particularly true in many Oil, Gas, Chemical, and Liquified Natural Gas (LNG) applications that rely on compressed air throughout the upstream and downstream processes.