Castair 5HP Commercial Air Compressor — 80-Gallon Horizontal Tank with Mounted Starter (C513HA80-S)
The C513HA80-S is a 5HP single-stage cast iron commercial air compressor on an 80-gallon horizontal ASME tank, with a factory-mounted magnetic motor starter. Based on the model number pattern and Castair's commercial series lineup, this unit uses the same pump as the C518HA8 (1,088 RPM, 23.7 CFM @ 0 PSI, 18.3 CFM @ 100 PSI at 230V/22A) but with the added starter assembly. The -S suffix on Castair compressors consistently indicates a factory-mounted and wired starter.
Spec note: The C513HA80-S does not appear in Castair's published commercial series spec table under this exact model number. Specifications above are inferred from Castair's established model naming conventions and the C518HA8 specs. Contact us or Castair to confirm exact specs for this configuration before ordering.
80-Gallon Horizontal Tank — More Reserve, Same Pump
The 80-gallon horizontal tank holds nearly three times the air volume of the 30-gallon C513HA8. This matters in a shop context: a larger tank means fewer pump cycles per hour for the same air demand, less heat build-up in the pump, and more reserve air for tools that have high momentary draw. A tire changer or sandblasting cabinet, for example, draws far more air momentarily than continuously — a larger tank handles those peaks without the pump struggling to keep up.
The horizontal layout on the 80-gallon tank (approximately 64 x 20 x 41 inches based on the C518HA8) is long and low — it rolls or tucks into equipment bays more easily than a vertical 80-gallon tank, but it requires significantly more floor length. Check your installation space before ordering.
Cast Iron Pump — Commercial Series
- Oil-lubricated cast iron pump: Built for sustained commercial use, not a consumer unit
- Single-stage compression: 125 PSI factory shutoff — right for most shop air tool applications
- 1,088 RPM pump speed: Significantly slower than consumer units — less heat, longer valve life
- V-twin cylinder layout: Smooth running with 360-degree cooling around both cylinders
- Automotive-type paper element air filter: Clean intake air, quiet operation
- Sight glass for oil level: Easy inspection without disassembly
- Ball bearing main bearings: Superior crankshaft support
- Bleeder pressure switch: Load-less motor starts
Factory-Mounted Magnetic Starter
The -S configuration includes a factory-mounted magnetic motor starter. At 5HP on single-phase 230V, a magnetic starter is optional but provides enhanced motor protection — particularly overload protection that a standard pressure switch doesn't offer. The factory-mounted starter means it's pre-wired; your electrician connects the incoming 230V single-phase feed to the starter and you're done.
Available Configurations — 5HP Commercial Series
| Model | Tank | Orientation | Starter | Weight |
|---|---|---|---|---|
| C513HA8 | 30-Gal | Horizontal | No | 295 lbs |
| C516VA8 | 60-Gal | Vertical | No | 335 lbs |
| C518HA8 | 80-Gal | Horizontal | No | 435 lbs |
| C513HA80-S | 80-Gal | Horizontal | Factory-mounted | ~435+ lbs |
| C518VC1 | 80-Gal | Vertical | No | 560 lbs |
| C518HC1 | 80-Gal | Horizontal | No | 560 lbs |
When Does a Shop Need This vs. Stepping Up or Down?
The 80-gallon horizontal with starter makes sense for a shop that needs the large reserve volume of an 80-gallon tank, wants the convenience of factory-mounted overload protection, and has the floor length for a horizontal installation.
Consider the C516VA8-S (vertical 60-gallon with starter) if floor space is at a premium — the vertical 60-gallon has a much smaller floor footprint at the cost of 20 fewer gallons of reserve volume.
Consider the C518VC1 (two-stage 80-gallon vertical) if you need 175 PSI working pressure or prefer quieter operation — the two-stage pump runs at 715 RPM versus 1,088 RPM.
Factory Options
- Air Operated Auto Drain (#ADVSM): Automatic condensate drain
- Electronic Auto Drain (#SDV03M): Timer-controlled drain valve
- Belt Guard Aftercooler (#BGAC1M): 35 CFM — cools air before it reaches the tank
- Vibration Pads (#VP1004): 4-pack 4x4x1" rubber isolation pads
- Right From the Start Kit (#RFS001): Oil, pads, ball valve, flex hose, filter
Technical Specifications
- Model: C513HA80-S
- Horsepower: 5HP
- Stage: Single
- Tank: 80-gallon horizontal, ASME-rated
- Pump RPM: ~1,088 (estimated from commercial series pattern)
- CFM @ 0 PSI: ~23.7 (estimated)
- CFM @ 100 PSI: ~18.3 (estimated)
- Voltage/Amps: 230V / 22A (single-phase)
- Shutoff Pressure: 125 PSI
- Starter: Factory-mounted magnetic starter
- Confirm specs with us before ordering
What's in the Box
- Assembled compressor (pump, motor, 80-gallon horizontal tank, belt drive)
- Factory-mounted magnetic motor starter
- Rigid metal belt guard
- Copper discharge and unloader tube
- ASME safety valve and bleeder pressure switch
- Oil sight glass and paper element air filter
- Not included: Compressor oil, vibration pads, flex hose for shop piping
Why Buy From Air Compressor Factory Direct?
We specialize in commercial and industrial air compressors and carry the full Castair lineup. Free shipping on qualifying orders. Free tech support at 866-217-0063. Full manufacturer warranty. Call us to confirm specs on this model before ordering — we'll make sure you get the right configuration for your installation.
Call 866-217-0063 for quick answers and help!
