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FS-Curtis OL7.5 Simplex 7.5HP 120G Oil-less Air Compressors
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FSCurtis
FS-Curtis OL7.5 Simplex 7.5HP 120G Oil-less Air Compressors
FS-Curtis OL7.5 Simplex 7.5HP 120G Oil-less Air Compressor
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The FS-Curtis OL7.5 Simplex delivers truly oil-less compressed air for the most demanding critical applications. Featuring a 7.5HP motor, 120-gallon horizontal ASME tank, and 23.1 CFM @ 175 PSI, this industrial-grade compressor is purpose-built for environments where air purity is non-negotiable—including food and beverage processing, pharmaceutical manufacturing, medical facilities, electronics assembly, and chemical processing. With its 100% dry crankcase design and TW75 3-cylinder pump, the OL7.5 guarantees zero oil carryover, protecting your products, processes, and downstream equipment while eliminating oil change costs and environmental concerns.
Available in 230V/3/60 (FOL07W75H1S-A3H1XX) or 460V/3/60 (FOL07W75H1S-A4H1XX) configurations, this simplex unit is designed for 100% continuous duty cycle operation. Built with a robust cast iron crankcase, dynamically balanced ductile iron crankshaft, and sealed pre-greased bearings, the OL7.5 combines American manufacturing quality with long-term reliability for mission-critical compressed air systems.
Oil-Less Air Quality
When your application demands absolute air purity, the FS-Curtis OL Series delivers uncompromising performance. The 100% dry crankcase design provides truly oil-less compressed air with zero oil carryover, ensuring your critical processes remain uncontaminated and your products meet the strictest quality standards.
- 100% dry crankcase provides oil-less compressed air for critical applications with zero oil carryover
- Over-sized fan and multiple inter-stage cooling pipes 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 by preventing oil contamination
- Decreases system costs and reduces pressure loss due to reduction of air filtration equipment in the compressed air system
Reliability for Your Critical Application
Built for the long haul, the OL7.5 features industrial-grade components engineered for continuous operation in demanding environments. Every element—from the cast-iron construction to the slow-speed pump design—is optimized for maximum uptime and minimal maintenance.
- Low speed pump for long-term reliability and efficiency
- 100% duty cycle for continuous operation without interruption
- Robust cast-iron crankcase, cylinder, and cylinder head for long-lasting performance in harsh industrial environments
- Dynamically balanced ductile iron crankshaft ensures smooth, vibration-free operation
- Sealed pre-greased bearings reduce maintenance requirements
Industry Leading Performance
The FS-Curtis OL7.5 doesn't just deliver oil-free air—it delivers performance. Every component has been precision-manufactured to the highest standards, providing maximum efficiency, minimal noise, and exceptional reliability in the most demanding applications.
- Components manufactured to the highest quality and precision to provide maximum performance in the most demanding of applications
- Designed for low noise level to maintain a safer, more comfortable work environment
- Precision manufactured valves increase air flow and maximize reliability—require no lubrication
- Self-lubricated guide rings and compression rings with advanced material and coating technology
- Aluminum piston and cast aluminum high tensile strength connecting rod for lightweight durability
- Air cooled inter-cooler enhances thermal management
Key Highlights
- 7.5HP NEMA motor with simplex configuration on a 120-gallon horizontal ASME tank
- 23.1 CFM @ 175 PSI from a TW75 3-cylinder pump with 3/4" NPT connection
- Zero oil carryover for critical air quality applications—ideal for food, pharmaceutical, medical, and electronics industries
- 100% duty cycle and low-speed operation for continuous reliability
- Made in USA with premium cast iron construction and precision-engineered components
Looking for full specifications and features?
Check out the Product Specifications and Product Features tabs
above for complete specs, dimensions, and detailed feature breakdowns.
Complete Safety and Control Package
The OL7.5 Simplex comes fully equipped with a comprehensive array of safety, monitoring, and control components that meet or exceed industry standards. The unit includes a UL-rated pressure switch, ASME safety relief valve, air pressure gauge, OSHA-approved belt guard, magnetic starter, and manual tank drain valve. Additional features include an intake filter with silencer, balanced flywheel, slow V-belt drive, and copper discharge piping for corrosion resistance. Isolation pads are shipped loose for easy installation to minimize vibration transfer.
Specifications at a Glance
- Model: OL7.5 Simplex
- Horsepower: 7.5HP
- Tank: 120 Gallons, Horizontal ASME
- Pump: TW75 (3-cylinder)
- Airflow: 23.1 CFM @ 175 PSI
- Voltage Options: 230V/3/60 (FOL07W75H1S-A3H1XX) or 460V/3/60 (FOL07W75H1S-A4H1XX)
- Connection: 3/4" NPT
- Dimensions: 72.3" L × 30" W × 60" H
- Weight: 895 lbs
Why Choose FS-Curtis Oil-Less?
When contamination isn't an option and downtime isn't acceptable, the FS-Curtis OL Series delivers proven American engineering with the performance and reliability your critical application demands. Eliminate oil carryover, reduce maintenance costs, and protect your processes with a compressor designed specifically for oil-free air production.
1 Year Factory Warranty extends to 2 years with use of FS-Curtis Maintenance Products