Castair I718VC2-S: 7.5 HP Single-Phase Industrial Air Compressor, 80-Gallon Vertical Tank, C2 Pump
The Castair I718VC2-S is a 7.5 horsepower, single-phase industrial compressor on an 80-gallon vertical ASME tank, C2 pump configuration, with factory-mounted aftercooler. The C2 pump is the larger, slower-speed option in the 7.5 HP series — it runs at 585 RPM and delivers 35.0 CFM free air (28.1 CFM at 175 PSI), more than the C1 despite lower RPM, because the C2 has larger cylinder displacement.
This is the unit for shops that want maximum CFM output in a vertical 80-gallon single-phase package and are willing to accept a larger footprint (40x24x74 vs. 32x24x74 for the C1) and heavier weight (760 vs. 655 lbs) for the quieter, higher-output pump.
C2 Pump vs. C1: Key Differences
- RPM: 585 (C2) vs. 895 (C1) — C2 is significantly quieter
- CFM @ 0 PSI: 35.0 (C2) vs. 32.4 (C1) — C2 delivers more air
- CFM @ 175 PSI: 28.1 (C2) vs. 24.8 (C1) — C2 delivers more usable air at working pressure
- Weight: 760 lbs (C2) vs. 655 lbs (C1) — C2 is heavier
- Footprint: 40x24x74 (C2) vs. 32x24x74 (C1) — C2 has wider base
Technical Specifications
- Model: I718VC2-S
- Horsepower: 7.5 HP
- Phase: Single-phase (1-phase)
- Voltage: 230V
- Tank capacity: 80 gallons
- Tank type: Vertical (VC)
- Pump RPM: 585
- Free air delivery (CFM @ 0 PSI): 35.0 CFM
- Delivery at working pressure (CFM @ 175 PSI): 28.1 CFM
- Maximum working pressure: 175 PSI
- Dimensions (L x W x H): 40 x 24 x 74 inches
- Weight: 760 lbs
- Aftercooler: Factory-mounted beltguard aftercooler included (#BGAC1M, 35 CFM)
When Does a Shop Need This vs. Stepping Up or Down?
Choose I718VC2-S if: You want vertical tank space efficiency, single-phase power, maximum CFM from an 80-gallon tank, and lower pump noise than the C1. Fits a shop running spray guns, plasma cutters, or two technicians sharing the line.
Step down to I718VC1-S if: Budget is the primary concern and 24.8 CFM at 175 PSI is adequate. The C1 is lighter, smaller, and costs less.
Step up to I7112VC2-S if: You need more stored air — 120 gallons vs. 80 gallons means longer run time before the compressor kicks back on during sustained high-demand operations.
Why Buy From Air Compressor Factory Direct?
We carry the complete Castair industrial series. Call us and we will help you compare C1 and C2 pump options against your actual shop CFM demand. Free shipping on qualifying orders. Free tech support. Full manufacturer warranty on every Castair industrial unit.
Call 866-217-0063 for quick answers and help!
