FS-Curtis ML20 120G Horiz 20HP Simplex Ultra Pack Air Comp #ML20-HUP
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| Model / Part Number | ML20 Ultra Pack Simplex |
| Horsepower | 20 HP |
| Tank | 120 Gallon Horizontal ASME |
| Airflow | 65.1 CFM @ 175 PSI |
| Pressure Range | 175 PSI |
| Warranty | 12 months |
FS-Curtis ML20-HUP — 20 HP Air Compressor
A three-shift manufacturing facility running pneumatic tooling around the clock has watched its 15 HP compressor cycle nonstop through the overnight shift, and the plant manager finally approved the upgrade to 20 HP with the factory-installed dryer built in from day one.
The FS-Curtis ML20-HUP is a two-stage reciprocating, ultra pack compressor rated for 20 HP with a 120 gallon horizontal ASME tank, built for multi-bay shops and commercial operations that need compressed air on tap all day. The included Ultra Pack — factory-installed automatic tank drain and refrigerated air dryer — eliminates the manual draining and drying steps a base unit would otherwise leave to whoever remembers to do them.
Who the ML20-HUP Is Built For
- ✅ A three-shift manufacturing or fabrication facility that's watched a 15 HP compressor cycle nonstop overnight to keep up with continuous pneumatic tooling demand, finally stepping up to 20 HP with accessories included
- ✅ A commercial operation that's had a moisture-related quality issue on a production line and wants the refrigerated dryer factory-installed rather than retrofitted after the fact
- ✅ A facility engineer who's priced out the base ML20-SH against this Ultra Pack version and decided the maintenance savings from the auto-drain justify the price difference at this scale
- ✅ A plant replacing an aging compressor that's started tripping breakers under real multi-shift load, needing the higher CFM headroom before it fails during a production run
- ✅ A facility standardizing on FS-Curtis's Ultra Pack tier for consistent accessories across its higher-HP equipment
What the ML20-HUP Is NOT Built For
- ❌ Smaller shops whose demand is fully covered by a 10-15 HP unit — the ML10/ML15 line saves real money if 65 CFM isn't needed
- ❌ Budget-conscious buyers who don't need the extra accessories yet — the base ML20-SH saves money
- ❌ Facilities needing 120V/240V single-phase power — this unit is three-phase only
What Makes the ML20-HUP Different
Commercial 2-Stage Pump
The ML20-HUP uses a C89, Cast-Iron, Two-Stage pump built for daily, all-day duty cycles — not a hobby-grade single-stage unit that struggles under continuous shop use.
CFM & Pressure Output
This unit is rated for 65.1 CFM @ 175 PSI, up to 175 PSI, giving it the margin to run impact wrenches, tire equipment, and paint tools even when two stations pull air at once.
Ultra Pack Upgrades
Includes factory-installed automatic tank drain and refrigerated air dryer — upgrades that reduce maintenance and extend the life of the tank and pump versus a base-model compressor.
Power Requirements
Three-Phase only, 230V/460V options available. Confirm your panel and breaker sizing with an electrician before delivery.
- 65.1 CFM at 20 HP
- Factory air-quality accessories
- Multi-shift manufacturing facilities
- Shops covered by 10-15 HP
- Single-phase-only electrical
ML20-HUP vs. FS-Curtis ML20-SH (20 HP, no accessories) — Which Compressor Is Right for Your Shop?
| Decision Point | ML20-HUP | FS-Curtis ML20-SH (20 HP, no accessories) |
|---|---|---|
| Horsepower / Tank | 20 HP / 120 Gal Horizontal | 20 HP / 120 Gal Horizontal |
| CFM @ 175 PSI | 65.1 CFM | 65.1 CFM |
| Included accessories | Ultra Pack bundle (auto-drain/dryer) | Standard configuration, no bundled accessories |
| Best fit | Facilities wanting factory air-quality accessories | Budget-conscious facilities that don't need accessories yet |
Choose the ML20-HUP for factory-installed air-quality accessories at the 20 HP tier. Choose the ML20-SH for a lower-cost simplex setup if you don't need the Ultra Pack accessories. Both stay inside Alamo’s catalog — call (844) 480-6059.
Full Specifications — ML20-HUP
| Model / Part Number | ML20 Ultra Pack Simplex |
| Horsepower | 20 HP |
| Pump | C89, Cast-Iron, Two-Stage |
| Configuration | Two-Stage Reciprocating, Ultra Pack |
| Tank | 120 Gallon Horizontal ASME |
| Airflow | 65.1 CFM @ 175 PSI |
| Pressure Range | 175 PSI |
| Motor / Electrical | Three-Phase only, 230V/460V options available |
| Phase / Hz / Voltage |
Three Phase: 3/60/200-208V (FML20C89H1U-D9L1XX) |
| Ultra Pack Features | factory-installed automatic tank drain and refrigerated air dryer |
| Overall Dimensions | 74" L x 36" W x 57" H |
| Shipping Weight | 1250 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 36" W x 57" 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: 1250 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 — ML20-HUP
FS-Curtis backs the ML20-HUP with a 1-year parts-only warranty.
| Component | Coverage Term |
|---|---|
| Tank & pump | 1 year parts |
| Motor & electrical components | 1 year parts |
| Ultra Pack accessories (auto tank drain, refrigerated air dryer) | 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 ML20-HUP
Why Buy the ML20-HUP 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 — oil changes, belt and air filter checks, 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. 20 HP, a 120 gallon horizontal ASME tank, 65.1 CFM @ 175 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 ML20-HUP or the FS-Curtis ML20-SH (20 HP, no accessories) 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