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FS-Curtis ML30 240G 30HP(2) Duplex Tank Mounted Electric Air Compressor
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FSCurtis
FS-Curtis ML30 240G 30HP(2) Duplex Tank Mounted Electric Air Compressor
FS-Curtis ML30 240G 30HP(2) Duplex Tank Mounted Electric Air Compressor
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The FS-Curtis ML30 Duplex delivers the ultimate solution for facilities with fluctuating compressed air demands. This dual 30 HP industrial air compressor system combines two pressure-lubricated reciprocating pumps on a single 240-gallon ASME-approved horizontal tank, producing 204.4 CFM at 175 PSI. With its intelligent alternator control panel, this duplex configuration automatically alternates between pumps during normal operation and engages both units when peak demand requires maximum output. The result? Lower electrical costs, extended pump life through alternating duty cycles, and zero downtime for maintenance—when one pump needs service, the other keeps your operation running.
Built on the Masterline platform, the ML30 Duplex represents the most robust, heavy-duty reciprocating air compressor lineup available. Every component is engineered for 100% continuous duty in the most demanding industrial environments. From the proprietary Centro-Ring pressure lubrication system to the 100% cast-iron construction of all critical wear components, this American-made compressor is designed to outlast and outperform splash-lubricated models and small rotary units. The perfect combination of quality components and efficient design make the ML Series rugged, affordable, and smart—delivering reliable compressed air for decades of service.
Duplex Design: Built-In Redundancy and Cost Savings
Duplex compressors are ideal when there are varying demand levels during operation. By alternating demand across two pumps, the ML30 Duplex delivers longer pump life through reduced wear on each individual unit. The redundant pumps ensure you'll always have compressed air available, eliminating costly maintenance downtime and production interruptions.
- Intelligent alternator control panel comes factory-mounted with magnetic motor starters and thermal overload protection
- Automatic alternation during normal operation distributes runtime evenly between compressors
- Both compressors run simultaneously when system demands peak output
- Duplex design reduces electrical cost by matching compressor capacity to actual demand
- Eliminates downtime—service one pump while the other maintains air supply
- Factory oil filled and ready to install
Centro-Ring Pressure Lubrication: Patented FS-Curtis Exclusive
The Centro-Ring pressure lubrication system is proprietary technology found only on FS-Curtis compressors. This patented design supplies pressurized oil internally to all bearings and critical wear surfaces through rifle-drilled crankshafts and connecting rods. Unlike splash-lubricated systems that rely on oil splash and hope, Centro-Ring delivers constant, controlled lubrication to every component that needs it—helping ensure maximum uptime and dramatically increasing service life.
100% Cast-Iron Construction Where It Counts
When FS-Curtis says 100% cast-iron, we mean it. While some manufacturers claim "100% cast-iron" yet still use aluminum cylinders, cylinder heads, connecting rods, and crankshafts, the ML30 features ductile cast-iron cylinders, cylinder heads, connecting rods, and crankshaft—all cast-iron where it counts for longer life with less maintenance.
- Ductile cast-iron crankshaft and connecting rods are stronger, more corrosion-resistant, and less likely to break than aluminum alternatives
- Slow-turning pump design reduces wear and increases pump life compared to high-speed competitors
- Rugged parts and industrial construction engineered for demanding environments and continuous operation
- Cast-iron delivers superior heat dissipation compared to aluminum, maintaining consistent operating temperatures
Quality Components Built for Industrial Performance
Every component in the ML30 Duplex is selected for reliability and performance. This compressor is built for 100% continuous duty in heavy industrial applications where lesser equipment fails.
- Industry-leading stainless-steel valve assemblies for increased airflow and long-term reliability
- Oversized tapered main roller bearings engineered to ensure extended service life
- Premium finned intercooler maximizes heat dissipation between compression stages
- Metal intake filter/silencer—superior durability compared to plastic alternatives
- Heavy-duty stamped-steel belt guard with OSHA-approved totally enclosed design
- Suction valve head unloaders for smooth continuous running operation
- Dynamically balanced flywheel reduces vibration and extends bearing life
- Slow V-belt drive for efficient power transmission and reduced maintenance
Key Performance Highlights
- 204.4 CFM at 175 PSI combined output from dual C98 pumps
- 240-gallon ASME-approved horizontal tank for maximum air storage capacity
- Premium Efficiency Motors reduce operating costs and meet modern efficiency standards
- Three-phase power available in 200-208V, 230V, and 460V configurations
- NEMA-1 alternator control panel with magnetic motor starters and 3-position alternator switch
Available Voltage Configurations
The ML30 Duplex is available in multiple three-phase voltage configurations to match your facility's electrical service:
- 3/60/200-208V - Model FML30C98D4S-A9L1XX
- 3/60/230V - Model FML30C98D4S-A3L1XX
- 3/60/460V - Model FML30C98D4S-A4L1XX
Complete Standard Equipment Package
Every ML30 Duplex comes complete with professional-grade components installed at the factory:
- Magnetic motor starters for reliable starting in 60Hz applications
- Automatic Start-Stop control maintains set pressure automatically
- UL-approved pressure switch for safe, reliable operation
- ASME-approved safety relief valve and discharge valve air service valve
- Dial read-out pressure gauge for at-a-glance monitoring
- Manual condensate tank drain valve for routine maintenance
- Tank shut-off valve for service isolation
- Standard two power source configuration with alternator control
Watch the ML Series in Action
See why the Masterline Series sets the standard for heavy-duty reciprocating air compressors. This video showcases the quality construction, innovative design features, and industrial performance that make FS-Curtis the choice of demanding professionals.
Proudly Made in the USA
The FS-Curtis ML30 Duplex is manufactured in the United States using American engineering expertise and quality craftsmanship. When you choose FS-Curtis, you're supporting American manufacturing while investing in a compressor built to deliver decades of reliable service.
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1 Year Factory Warranty extends to 2 years with use of FS-Curtis Maintenance Products. See full Warranty Policy & Procedure Manual