FS-Curtis ML25 240G 25HP(2) Duplex Ultra Pack Air Comp #ML25-DUP
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| Model / Part Number | ML25 Ultra Pack Duplex |
| Horsepower | 25 HP (x2, Duplex) |
| Tank | 240 Gallon Horizontal ASME |
| Airflow | 164.8 CFM @ 175 PSI |
| Pressure Range | 175 PSI |
| Warranty | 12 months |
FS-Curtis ML25-DUP — 25 HP (x2, Duplex) Air Compressor
The largest manufacturing facilities running 24/7 production can't gamble on a single compressor pump or on someone remembering to drain a 240-gallon tank — they need both the redundancy and the factory-installed air-quality accessories in one purchase.
The FS-Curtis ML25-DUP is a duplex two-stage reciprocating, ultra pack compressor rated for 25 HP (x2, Duplex) with a 240 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 — means the compressor looks after its own condensation and air-quality upkeep, instead of relying on someone remembering to.
Who the ML25-DUP Is Built For
- ✅ A large manufacturing facility running 24/7 production where a compressor outage stops everything at once, and the second pump keeping the line running pays for itself the first time it's needed
- ✅ A high-volume operation that's had both a pump failure and a moisture-related quality issue in the same year, and wants both problems solved together in one purchase
- ✅ A facility that's grown past what a simplex unit can support and needs both maximum combined CFM (164.8) and the uptime insurance of a second pump, plus the factory-installed dryer
- ✅ An operator who's already standardized on FS-Curtis's ML Series at other locations and wants the top Ultra Pack duplex tier for the highest-volume facility in the group
- ✅ A facility manager budgeting for planned production expansion who'd rather buy the headroom and accessories now than upgrade twice
What the ML25-DUP Is NOT Built For
- ❌ Smaller or mid-size facilities — this is one of the most expensive configurations in the ML line and is overkill for lighter demand
- ❌ Budget-conscious buyers — the base ML25-D duplex without Ultra Pack saves meaningfully if accessories aren't needed yet
- ❌ Facilities with limited floor space — still a large-footprint duplex unit
What Makes the ML25-DUP Different
Commercial 2-Stage Pump
The ML25-DUP uses a C98 (x2), 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 164.8 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.
- Redundancy + factory accessories
- 164.8 CFM combined output
- Highest-volume manufacturing facilities
- Smaller / mid-size facilities
- Budget-first buyers
ML25-DUP vs. FS-Curtis ML25-D (Duplex, no accessories) — Which Compressor Is Right for Your Shop?
| Decision Point | ML25-DUP | FS-Curtis ML25-D (Duplex, no accessories) |
|---|---|---|
| Horsepower / Tank | 25 HP x2 / 240 Gal Horizontal | 25 HP x2 / 240 Gal Horizontal |
| CFM @ 175 PSI | 164.8 CFM combined | 164.8 CFM combined |
| Redundancy + accessories | Duplex pumps + Ultra Pack bundle (auto-drain/dryer) | Duplex pumps, standard configuration |
| Best fit | Highest-volume facilities wanting redundancy and factory accessories together | Facilities wanting redundancy at a lower price |
Choose the ML25-DUP for the most fully-equipped, redundant setup in the ML25 line. Choose the ML25-D for the same redundancy at a lower price if you don't need the Ultra Pack accessories. Both stay inside Alamo’s catalog — call (844) 480-6059.
Full Specifications — ML25-DUP
| Model / Part Number | ML25 Ultra Pack Duplex |
| Horsepower | 25 HP (x2, Duplex) |
| Pump | C98 (x2), Cast-Iron, Two-Stage |
| Configuration | Duplex Two-Stage Reciprocating, Ultra Pack |
| Tank | 240 Gallon Horizontal ASME |
| Airflow | 164.8 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 (FML25C98D4U-A9L1XX) |
| Ultra Pack Features | factory-installed automatic tank drain and refrigerated air dryer |
| Overall Dimensions | 105" L x 53" W x 73" H |
| Shipping Weight | 3900 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: 105" L x 53" W x 73" 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: 3900 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 — ML25-DUP
FS-Curtis backs the ML25-DUP 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 ML25-DUP
Why Buy the ML25-DUP 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. 25 HP (x2, Duplex), a 240 gallon horizontal ASME tank, 164.8 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 ML25-DUP or the FS-Curtis ML25-D (Duplex, 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