FS-Curtis OL5 120G Horizontal 5HP Simplex Oil-less Air Compressor #OL5
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| Model / Part Number | OL5 Simplex |
| Horsepower | 5 HP |
| Tank | 120 Gallon Horizontal ASME |
| Airflow | 12.3 CFM @ 100 PSI |
| Pressure Range | 100 PSI |
| Warranty | 12 months |
FS-Curtis OL5 — 5 HP Air Compressor
A dental lab or food-processing facility can't risk oil contamination reaching the finished product, and a standard lubricated compressor is a liability the moment a seal wears and oil starts carrying downstream.
The FS-Curtis OL5 is a simplex oil-less reciprocating compressor rated for 5 HP with a 120 gallon horizontal ASME tank, sized for shops and commercial operations that need steady, dependable air output every day, with the option to bolt on accessories down the road.
Who the OL5 Is Built For
- ✅ A dental lab, food-processing facility, or pharmaceutical operation where oil contamination in the compressed air line is a genuine product-safety risk, not just an inconvenience
- ✅ A paint or coating shop that's had a finish job ruined by oil carryover from a standard lubricated compressor and needs a design that structurally can't do that
- ✅ A facility replacing an aging oil-lubricated unit that's started showing oil in the discharge line as seals wear, before it contaminates a batch
- ✅ An operation that wants to eliminate oil-change maintenance entirely rather than schedule around it
- ✅ A shop standardizing on FS-Curtis's oil-less OL Series for any application where clean air is non-negotiable
What the OL5 Is NOT Built For
- ❌ Shops needing 175 PSI output — the OL Series tops out at 100 PSI; for higher pressure, look at the CA or ML Series
- ❌ Facilities needing single-phase power — this unit is three-phase only
- ❌ Budget-conscious buyers whose application doesn't require oil-less air — a lubricated CA or ML unit costs less for the same CFM range
What Makes the OL5 Different
Oil-Less Pump Design
The FS-Curtis OL5 uses a W50, Oil-less Design — a 100% dry-crankcase design built for continuous duty without oil, so there's no oil-change maintenance and zero risk of oil carryover into the compressed air line.
CFM & Pressure Output
Output holds at 12.3 CFM @ 100 PSI, up to 100 PSI, which is enough to supply clean, oil-free compressed air to contamination-sensitive processes and pneumatic equipment through a full shift without the pump running constantly.
Power Requirements
Three-Phase only, 230V/460V options available. Confirm your panel and breaker sizing with an electrician before delivery.
- Zero oil-contamination risk
- No oil-change maintenance
- Food/pharma/dental-grade clean air
- Shops needing 175 PSI output
- Single-phase-only electrical
OL5 vs. FS-Curtis OL7.5 (7.5 HP, Simplex Oil-less) — Which Compressor Is Right for Your Shop?
| Decision Point | OL5 | FS-Curtis OL7.5 (7.5 HP, Simplex Oil-less) |
|---|---|---|
| Horsepower / Tank | 5 HP / 120 Gal Horizontal | 7.5 HP / 120 Gal Horizontal |
| CFM @ 100 PSI | 12.3 CFM | 23.1 CFM |
| Design | Oil-less — no oil contamination risk | Oil-less — no oil contamination risk |
| Best fit | Smaller clean-air applications | Higher-demand clean-air applications |
Choose the OL5 for smaller clean-air applications where 12.3 CFM covers the load. Choose the OL7.5 when your clean-air application needs more sustained CFM. Both stay inside Alamo’s catalog — call (844) 480-6059.
Full Specifications — OL5
| Model / Part Number | OL5 Simplex |
| Horsepower | 5 HP |
| Pump | W50, Oil-less Design |
| Configuration | Simplex Oil-less Reciprocating |
| Tank | 120 Gallon Horizontal ASME |
| Airflow | 12.3 CFM @ 100 PSI |
| Pressure Range | 100 PSI |
| Motor / Electrical | Three-Phase only, 230V/460V options available |
| Phase / Hz / Voltage | Three Phase: 3/60/230V (FOL05W50H1S-A3H1XX) 3/60/460V (FOL05W50H1S-A4H1XX) |
| Overall Dimensions | 74" L x 29" W x 52" H |
| Shipping Weight | 680 lbs |
| Warranty | 12 months |
⚠️ Setup Requirements
- Electrical: Three-Phase only, 230V/460V options available; have an electrician confirm your panel capacity before delivery.
- Floor space: 74" L x 29" W x 52" H footprint; plan clear access on at least two sides for maintenance and tank drain.
- Ventilation: Locate in a dry, ventilated area away from dust and moisture to protect the pump and tank.
- Weight: 680 lbs shipping weight — confirm your floor/dock can receive and position the unit.
- Setup: Installation is available as a quoted service (piping, electrical tie-in, functional test) — it’s not included in the purchase price. Call (844) 480-6059 for an install quote if you’d like Alamo’s crew to set it up.
FS-Curtis Warranty — OL5
FS-Curtis backs the OL5 with a 1-year parts-only warranty.
| Component | Coverage Term |
|---|---|
| Tank & pump | 1 year parts |
| Motor & electrical components | 1 year parts |
| Wear items (belts, filters, gaskets) | Not covered (consumable) |
Warranty service is through Alamo Equipment & Service — call (844) 480-6059 instead of waiting on a manufacturer hotline. Coverage is subject to FS-Curtis warranty terms, conditions, and requirements.
Frequently Asked Questions — FS-Curtis OL5
Why Buy the OL5 from Alamo Equipment & Service?
- Installation available. Buying online gets you the compressor — piping and electrical tie-in are an extra-charge service. We have the crews to install it and can quote that separately; call (844) 480-6059 for a quote.
- We service it. These compressors need preventative maintenance up to 4x a year per the manufacturer — belt and air filter checks, valve and piston-ring inspection, contactor and electrical inspection. Call (844) 480-6059 for maintenance, repairs, or support — and if you ever need warranty work, we register your equipment with the manufacturer and handle the claim directly, so you’re not stuck navigating vendor support on your own.
- We size it with you. 5 HP, a 120 gallon horizontal ASME tank, 12.3 CFM @ 100 PSI — we’ll confirm this matches your shop’s actual air draw before you order.
- Free shipping. Ships free to the 48 contiguous states.
- Expert comparison help. Not sure if the OL5 or the FS-Curtis OL7.5 (7.5 HP, Simplex Oil-less) is the better fit? We’ll walk you through it.
A shop buying from a pure e-commerce retailer gets a box. A shop buying from Alamo gets a partner.
Shipping Rates and Delivery Estimates: Shipping is FREE to the 48 contiguous United States.
Shipment Processing Time: All orders are processed within [2–3] business days of receipt, excluding weekends and holidays. Orders are not processed or shipped from Friday at 12 pm CST through Sunday or on holidays. During periods of high order volume, shipments may be delayed by a few days. Customers will be notified via email or phone in the event of significant delays.
See the attached document for FS CURTIS WARRANTY