FS-Curtis ML7.5 200G 7.5HP(2) Duplex Tank Mounted Electric Air Compressor #ML7.5-D
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| Model / Part Number | ML7.5 Duplex |
| Horsepower | 7.5 HP (x2, Duplex) |
| Tank | 200 Gallon Horizontal ASME |
| Airflow | 57.4 CFM @ 175 PSI |
| Pressure Range | 175 PSI |
| Warranty | 12 months |
FS-Curtis ML7.5-D — 7.5 HP (x2, Duplex) Air Compressor
A commercial shop that's outgrown a simplex compressor and had a pump go down mid-shift needs the redundancy of a second pump and a larger tank reserve, without paying extra for accessories it hasn't decided it needs yet.
The FS-Curtis ML7.5-D is a duplex two-stage reciprocating compressor rated for 7.5 HP (x2, Duplex) with a 200 gallon horizontal ASME tank, built for shops and commercial operations that need compressed air on tap all day without paying for accessories they don’t need.
Who the ML7.5-D Is Built For
- ✅ A commercial shop running enough simultaneous demand that a single-pump failure would stop the whole operation, wanting redundancy plus a large 200-gallon reserve
- ✅ An owner who's priced out the Ultra Pack duplex and decided the base configuration's lower cost is the better fit for now
- ✅ A shop with an existing air dryer or filtration system already installed that doesn't need factory-bundled accessories
- ✅ A facility that can service one pump during business hours without shutting down air to the rest of the building
- ✅ A fleet-maintenance or multi-tech facility standardizing on FS-Curtis's ML Series, starting at the base duplex tier
What the ML7.5-D Is NOT Built For
- ❌ Smaller shops where a simplex ML7.5-SH or ML7.5-SV already covers the air draw
- ❌ Shops wanting factory auto-drain/dryer accessories standard — the Ultra Pack (ML7.5-DUP) adds those, this base unit doesn't
- ❌ Shops with limited floor space — the 200-gallon duplex tank has the largest footprint in the ML7.5 line
What Makes the ML7.5-D Different
Commercial 2-Stage Pump
The ML7.5-D uses a C79 (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
Delivers 57.4 CFM @ 175 PSI and holds pressure up to 175 PSI, enough headroom to run impact wrenches, tire equipment, and paint tools without the tank running dry.
Power Requirements
Single or Three-Phase, 230V/460V options available. Confirm your panel and breaker sizing with an electrician before delivery.
- Built-in pump redundancy
- 200-gallon reserve capacity
- 57.4 CFM combined output
- Smaller shops covered by simplex
- Tight floor space
ML7.5-D vs. FS-Curtis ML7.5-SH (7.5 HP, Simplex) — Which Compressor Is Right for Your Shop?
| Decision Point | ML7.5-D | FS-Curtis ML7.5-SH (7.5 HP, Simplex) |
|---|---|---|
| Horsepower / Tank | 7.5 HP x2 / 200 Gal Horizontal | 7.5 HP / 80 Gal Horizontal |
| CFM @ 175 PSI | 57.4 CFM combined | 28.7 CFM |
| Redundancy | Duplex — two independent pumps, built-in backup | Simplex — single pump, no built-in redundancy |
| Best fit | Shops that can't tolerate a compressor going down | Shops where redundancy isn't a hard requirement |
Choose the ML7.5-D when a compressor failure stopping the whole shop is not an option. Choose the ML7.5-SH for a simpler, lower-cost setup if redundancy isn't required. Both stay inside Alamo’s catalog — call (844) 480-6059.
Full Specifications — ML7.5-D
| Model / Part Number | ML7.5 Duplex |
| Horsepower | 7.5 HP (x2, Duplex) |
| Pump | C79 (x2), Cast-Iron, Two-Stage |
| Configuration | Duplex Two-Stage Reciprocating |
| Tank | 200 Gallon Horizontal ASME |
| Airflow | 57.4 CFM @ 175 PSI |
| Pressure Range | 175 PSI |
| Motor / Electrical | Single or Three-Phase, 230V/460V options available |
| Phase / Hz / Voltage |
Single Phase: 1/60/230V (FML07C79D1S-A2L1XX) Three Phase: 3/60/200-208V (FML07C79D1S-A9L1XX) 3/60/230V (FML07C79D1S-A3L1XX) 3/60/460V (FML07C79D1S-A4L1XX) |
| Overall Dimensions | 82" L x 31" W x 55" H |
| Shipping Weight | 2040 lbs |
| Warranty | 12 months |
⚠️ Setup Requirements
- Electrical: Single or Three-Phase, 230V/460V options available; have an electrician confirm your panel capacity before delivery.
- Floor space: 82" L x 31" W x 55" 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: 2040 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 — ML7.5-D
FS-Curtis backs the ML7.5-D 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 ML7.5-D
Why Buy the ML7.5-D 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. 7.5 HP (x2, Duplex), a 200 gallon horizontal ASME tank, 57.4 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 ML7.5-D or the FS-Curtis ML7.5-SH (7.5 HP, Simplex) 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