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.
- Ships by freight. Add to cart and enter your ZIP for a freight quote, or call us.
- 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.
Ships by freight. Add to cart and enter your ZIP for a freight quote, or call us.
See the attached document for FS CURTIS WARRANTY