The Castair Aftercooler Option Bundle AOC1-460 is the 460-volt, three-phase version of Cast Air's factory aftercooler options package for simplex compressor installations. If your facility runs three-phase 460V electrical service — which is standard for higher-horsepower industrial compressor packages — the AOC1-460 is the correct bundle. The standard AOC1 (230V single-phase) and the AOC1-460 (460V three-phase) serve the same functional purpose but are wired and rated for different electrical services. Ordering the wrong voltage version is a real mistake that creates safety problems and requires a return — check your compressor motor nameplate for voltage and phase before ordering.
The aftercooler in this bundle is a fan-cooled heat exchanger that mounts in the compressor discharge line between the pump and the receiver tank. Compressor discharge air arrives at 250–350°F carrying a full moisture load. The aftercooler's job is to bring that air temperature down to within 15°F of ambient air temperature before it enters the tank — at that temperature, approximately 65% of the moisture load condenses and drains out at the aftercooler, not inside your tank and air lines. Shops running 460V three-phase service are typically running higher-horsepower compressors that produce larger volumes of hot air — getting aftercooling right at this scale has a proportionally larger impact on system air quality.
Three-Phase 460V Service: What It Means for Your Aftercooler Selection
Three-phase 460V electrical service is common in facilities with compressors in the 10 HP and above range, particularly in manufacturing, heavy fleet maintenance, and industrial operations. At this power level:
- Compressors run at higher sustained duty cycles and produce correspondingly larger volumes of hot discharge air
- The moisture load entering the system per hour is greater — proper aftercooling at this scale matters more, not less
- The fan motor and any electric controls in the aftercooler bundle must be rated for 460V three-phase — using a 230V component on 460V service is a safety hazard
The AOC1-460 is built for this environment. The electrical components are rated for your service. The heat exchanger is matched to your compressor output. This is not a 230V unit with an adapter — it is the correct three-phase product.
Key Features of the AOC1-460 Bundle
- 460V Three-Phase Configuration: All electrical components rated for 460V, three-phase power — correct for industrial facilities on standard three-phase service
- Factory-Matched Components: Aftercooler sized and specified by Castair for the compressor models this bundle is designed for — not a field adaptation
- 250 PSIG Maximum Working Pressure: Handles the full operating pressure range of all standard Castair industrial compressor models
- 350°F Maximum Inlet Air Temperature: Rated for the full discharge temperature range of industrial two-stage reciprocating and rotary screw pumps
- Cools to Within 15°F of Ambient: Brings compressed air from pump discharge temperature down to near ambient before the receiver tank
- 65% Total Moisture Removal: Extracts approximately 65% of the water vapor load from the compressed air stream at the discharge point — every 20-degree temperature drop removes 50% of remaining moisture
- Complete Factory Package: All components for aftercooler installation in one bundle — aftercooler unit, fan assembly, drain provisions, and mounting hardware
- Simplex Configuration: For single-compressor installations — for duplex (two-compressor) systems, a different bundle is required
- Minnesota Manufacturing: Castair builds to industrial standards in Minnesota
What Is Included in the AOC1-460 Bundle
The AOC1-460 is a complete factory options package. Components are factory-matched to specific Castair compressor models — contact us to confirm the exact contents for your compressor before ordering.
Factory bundle packages typically include:
- Aftercooler heat exchanger: Fan-cooled, 250 PSIG / 350°F rated
- Cooling fan and motor assembly: Rated for 460V, three-phase service
- Condensate drain provisions: For removing moisture captured at the aftercooler
- Mounting and connection hardware: Factory-matched for the target compressor
Optional accessories available: filter with automatic drain, temperature control valve #86816.
AOC Bundle Configurations — Selecting the Right Version
The AOC1 series covers three electrical and compressor configurations. Match your selection to your electrical service and compressor setup:
- AOC1: 230V, single-phase, simplex — for standard single-phase shop and light commercial installations
- AOC1-460: 460V, three-phase, simplex — for industrial facilities on three-phase service (this bundle)
- AOC1D: 230V, single-phase, duplex — for two-compressor systems on single-phase service
Do not order across voltage configurations. The 230V and 460V versions are not interchangeable, and the electrical mismatch creates a safety hazard. If you are unsure which version matches your facility, call us — we will verify before anything ships.
Full Castair Free Standing Aftercooler Lineup (For Reference)
If you are evaluating standalone aftercooler options in addition to the factory bundle, Castair's free standing series covers 35–300 CFM:
- FSAC35: 35 CFM, 3/4 inch NPT
- FSAC50: 50 CFM, 1 inch NPT
- FSAC75: 75 CFM, 1 inch NPT
- FSAC100: 100 CFM, 1-1/4 inch NPT
- AC120: 120 CFM, 1-1/2 inch NPT
- AC150: 150 CFM, 1-1/2 inch NPT
- AC240: 240 CFM, 2 inch NPT
- AC300: 300 CFM, 2 inch NPT
All models: 250 PSIG maximum, 350°F maximum inlet, cools to within 15°F of ambient, 115V/1-phase/60 Hz fan power. The factory bundle (AOC1-460) integrates the aftercooler with 460V three-phase electrical components for your specific compressor.
When Does a Facility Need the AOC1-460?
The AOC1-460 is for facilities that:
- Operate on 460V three-phase service with Castair compressors that specify this bundle
- Are purchasing a new Castair industrial compressor on three-phase service and want factory aftercooler integration from day one
- Are retrofitting aftercooling to an existing Castair three-phase installation and need factory-matched components rather than a field-assembled solution
- Have moisture quality problems at industrial scale — high-horsepower compressors produce proportionally more hot, wet air, and aftercooling is even more critical at this output level
- Run spray finishing, precision machining, or pneumatic automation where moisture in the air line creates direct production defects or equipment damage
For 230V single-phase installations, order the AOC1. For duplex systems, order the AOC1D.
Technical Specifications
- Model: AOC1-460
- Manufacturer: Castair (Cast Air) — Minnesota, USA
- Bundle Type: Complete factory aftercooler options package
- Voltage: 460V
- Phase: Three-phase
- Compressor Configuration: Simplex (single compressor)
- Maximum Working Pressure: 250 PSIG
- Maximum Inlet Air Temperature: 350°F
- Approach Temperature: Within 15°F of ambient
- Water Removal: Approximately 65% of total moisture (at 250°F inlet)
- Category: Accessories — Aftercoolers
- Compatibility: Contact us to confirm matched Castair compressor models
Why Buy From Air Compressor Factory Direct?
Air Compressor Factory Direct has been supplying commercial and industrial compressed air equipment since 2016. We carry the full Castair line — compressors, aftercoolers, factory option bundles, and accessories. When you are buying an aftercooler bundle for a three-phase industrial installation, getting the voltage and configuration right before the order ships matters. We verify before anything leaves the warehouse.
- Free Shipping: AOC1-460 bundles ship free to the continental US
- Free Pre-Sale Technical Support: Call us with your compressor model number and electrical service — we will confirm the right bundle version before you order
- Full Manufacturer Warranty: All Castair equipment and factory option bundles carry full factory warranty
- Honest Guidance: If the AOC1-460 is not the right fit for your installation, we will tell you which bundle is and why
- Castair Specialist: We know the full product line and can answer technical questions specific to Castair compressor models
Call 866-217-0063 for quick answers and help!
