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FSCurtis
FS-Curtis OL5 Simplex 5HP 120G Oil-less Air Compressors
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FSCurtis
FS-Curtis OL5 Simplex 5HP 120G Oil-less Air Compressors
FS-Curtis OL5 Simplex 5HP 120G Oil-less Air Compressors
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The FS-Curtis OL5 Simplex is the ideal reciprocating oil-less air compressor for critical applications where air quality is paramount. With a 5HP 3-phase motor, VW50 2-cylinder pump, and 120-gallon horizontal ASME tank, this compressor delivers 12.3 CFM @ 175 PSI of completely oil-free compressed air. Available in 230V/3/60Hz (model FOL05W50H1S-A3H1XX) or 460V/3/60Hz (model FOL05W50H1S-A4H1XX) configurations, the OL5 is engineered for food and beverage processing, medical facilities, chemical processing, pharmaceutical production, electronics manufacturing, and any industry where even trace amounts of oil contamination cannot be tolerated.
Oil-Less Air Quality for Critical Applications
Unlike traditional lubricated compressors that require downstream filtration to remove oil carryover, the FS-Curtis OL5 features a 100% dry cast iron crankcase that provides truly oil-less compressed air with zero oil contamination. This design is environmentally friendly, eliminates oil vapor generation, and completely removes the cost and hassle of oil changes and disposal.
The over-sized cooling fan and multiple inter-stage cooling pipes maximize heat transfer, resulting in lower discharge temperatures and cleaner, drier air. The integrated air-cooled inter-cooler further enhances cooling efficiency, protecting your downstream equipment and reducing overall system maintenance costs.
- 100% dry crankcase provides oil-less compressed air for critical applications with zero oil carryover
- Over-sized fan and multiple inter-stage cooling pipes to maximize heat transfer for lower discharge temperature
- Environmentally friendly with no oil vapor generated by the compressor — eliminates oil changes and oil disposal costs
- Protects downstream equipment and reduces maintenance cost
- Decreases costs and reduces system pressure loss due to reduction of air filtration equipment in the compressed air system
Reliability for Continuous Operation
Built for the most demanding environments, the OL5 is designed with long-term reliability at its core. The low-speed VW50 pump operates efficiently while minimizing wear, and the compressor is rated for 100% duty cycle, meaning it can run continuously without interruption — critical for facilities that require uninterrupted air supply around the clock.
The foundation of this reliability is the robust cast-iron crankcase, cylinder, and cylinder head, engineered to withstand years of heavy use. The dynamically balanced ductile iron crankshaft and cast aluminum high tensile strength connecting rod work in harmony to deliver smooth, vibration-free operation. Sealed pre-greased bearings and self-lubricated guide rings and compression rings ensure the pump maintains peak performance without constant servicing.
- Low speed pump for long-term reliability and efficiency
- 100% duty cycle for continuous operation
- Robust cast-iron crankcase, cylinder, and cylinder head for long-lasting performance
Industry Leading Performance and Precision
Every component of the FS-Curtis OL5 is manufactured to the highest quality standards to deliver maximum performance in the most demanding applications. Precision-machined valves require no lubrication while increasing air flow and maximizing reliability. The aluminum piston and balanced flywheel contribute to smooth, efficient operation with reduced vibration.
Noise reduction is a key design priority — the intake filter with silencer and carefully engineered components work together to keep sound levels low, creating a more comfortable working environment. The slow V-belt drive further enhances quiet operation while protecting the NEMA-designed electric motor and ensuring efficient power transfer.
- Components made to the highest quality and precision to provide maximum performance in the most demanding applications
- Designed for low noise level
- Precision manufactured valves increase air flow and maximize reliability
Key Highlights
- 5HP 3-phase motor with 230V or 460V options delivers 12.3 CFM @ 175 PSI
- VW50 2-cylinder oil-less pump with 100% dry crankcase — zero oil carryover
- 120-gallon horizontal ASME tank provides ample air storage for demanding applications
- 100% duty cycle for continuous, uninterrupted operation
- Made in USA with premium cast iron and aluminum construction for long-lasting durability
Complete Safety and Control Features
Safety and ease of use are built into every aspect of the OL5 Simplex. The compressor comes equipped with a UL-listed pressure switch, ASME safety relief valve, and ASME air service valve for reliable, code-compliant operation. The magnetic starter provides smooth motor control, while the air pressure gauge allows for at-a-glance monitoring of system pressure.
An OSHA-approved belt guard protects operators during service and maintenance. The copper discharge pipe ensures efficient heat dissipation, and the manual tank drain valve (tank mounted) makes routine condensate removal simple. The unit ships with isolation pads (loose) to reduce vibration transmission to the floor, and the 3/4" NPT connection provides easy integration into your existing compressed air system.
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1 Year Factory Warranty extends to 2 years with use of FS-Curtis Maintenance Products