CUSTOM-ENGINEERED CENTRIFUGAL AIR COMPRESSORS
PAP Plus® S1
The PAP Plus S1 engineered centrifugal compressor delivers ISO 8573-1 Class 0 oil-free compressed air for industrial applications requiring a compact, application-specific solution.
With airflow capacities from 900 to 2,200 CFM, the S1 is available in one-, two-, and three-stage configurations to meet a range of pressure, performance, and project requirements. Its flexible design supports integration into new or existing compressed air systems.
As part of FS-Elliott’s PAP Plus series, the S1 combines proven centrifugal compressor engineering, service-friendly construction, and configurable controls to support reliable operation and long-term equipment performance.
Performance Specifications
The PAP Plus S1 can be configured to meet your required airflow, discharge pressure, operating conditions, and applicable project standards, providing a flexible solution for specialized industrial compressed air applications.
FLOW
900 – 2,200
CFM
PRESSURE
40 – 175
PSIG
POWER
160 – 500
HP
AIR QUALITY
ISO 8573-1 CLASS 0
WEIGHT
9,500 lb
DIMENSIONS (L × W × H)
124 x 81 x 61 in
FLOW
25 – 60
m3/min
PRESSURE
2.75 – 12.1
barg
POWER
120 – 375
kW
AIR QUALITY
ISO 8573-1 CLASS 0
WEIGHT
4,309 kg
DIMENSIONS (L × W × H)
3,150 x 2,057 x 1,549 mm
Specifications vary by configuration.
Features & Benefits
A compressor’s value extends beyond its rated capacity. The S1 combines oil-free centrifugal compression with accessible components, performance controls, and configuration flexibility to help your team protect production, manage energy use, and plan maintenance with confidence.
Confidence for Critical Air Demands
The PAP Plus S1 can be engineered to meet detailed customer and project requirements, including applicable API and JIP 33 specifications.
Its oil-free air path helps protect processes from compressor oil contamination, while features such as an auxiliary oil pump and available monitoring help operators maintain visibility into compressor condition.
Optimized Design, Efficient Operation
PAP Plus 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.
Together, these maintenance-friendly features help reduce service time, improve equipment reliability, and support long-term performance throughout the compressor’s lifecycle.
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.
Long-Term Support You Can Count On
FS-Elliott supports customers throughout the life of their engineered centrifugal compressor with a standard two-year bumper-to-bumper warranty, backed by factory-trained channel partners and a global service network providing 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.
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Explore Key Components of the PAP Plus S1
Accessories & Options
Proven Across Critical Industries
Insights & Resources
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API 614 and API 672 Air Compressor Standards Guide
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