Cast Air R1038VG11 — 10HP 3-Phase Rotary Screw Air Compressor with Vertical Tank
The Cast Air R1038VG11 is a 10 horsepower, 3-phase rotary screw air compressor built for shops that need continuous-duty air supply without the maintenance cycle of a reciprocating piston unit. It comes in your choice of 230V or 460V, so you can match it to whatever 3-phase service you have on the floor. The vertical tank configuration keeps the footprint tight — a real advantage when every square foot of bay space is spoken for.
Note: Detailed manufacturer specifications for this exact model are pending. The information below reflects what is known from the model designation and product listing. Contact us at 866-217-0063 for confirmed specs before ordering.
Who This Compressor Is For
This unit is built for shops running tools that demand constant airflow — not intermittent bursts. Think:
- Collision repair and body shops — sanders, DA polishers, spray guns, and blowguns running simultaneously
- Fleet maintenance facilities — air-impact tools, tire equipment, and lifts in continuous rotation across multiple bays
- Production shops and light manufacturing — assembly lines or fabrication shops where downtime is not acceptable
- General repair shops stepping up from a piston compressor — tired of the duty cycle limit and the maintenance hassle
If your current piston compressor struggles to keep up with peak demand during the day, or if you're hearing the motor cycle on and off constantly while you work, a 10HP rotary screw is likely the right move.
Rotary Screw vs. Piston: What Actually Changes
- Duty cycle — Rotary screw compressors are rated for 100% continuous duty. Piston compressors are typically rated at 50-75%. The screw runs all day without overheating.
- Noise level — Rotary screw units run significantly quieter than equivalent piston units. In a shop environment this matters for communication and for OSHA compliance in enclosed spaces.
- Air quality — Rotary screw compressors produce cooler, drier air with less oil carry-over when maintained properly, which matters for paint work and pneumatic tool longevity.
- Maintenance interval — Oil and filter changes on a rotary screw are typically less frequent than on a piston unit, though the service itself requires attention to manufacturer intervals.
Vertical Tank Configuration — Why It Matters in a Working Shop
- Smaller floor footprint — A vertical tank takes up significantly less floor space than a horizontal tank of equivalent volume. In a two- or three-bay shop, this frees up usable bay area.
- Plumbing flexibility — Vertical tanks are often easier to position near a wall or in a corner, keeping your main lines short and pressure drop low.
- Standard pressure gauge and safety valve access — The VG designation confirms this unit includes a tank-mounted gauge for monitoring storage pressure without additional instrumentation.
230V vs. 460V — Which Voltage Do You Need?
The R1038VG11 is available in either 230V 3-phase or 460V 3-phase. Here is how to decide:
- 230V — Choose this if your facility's 3-phase service is 208-230V. Common in shops where the existing electrical service was designed around 230V equipment. Higher amperage draw for the same horsepower compared to 460V.
- 460V — Choose this if your facility runs 460V (or 480V) 3-phase service. Lower amperage draw for the same HP — approximately half the amps of the 230V version. Runs cooler on longer wire runs from the panel. If you're running more than 50 feet of wire from the panel to the compressor, 460V is often the better choice from an efficiency and wire-sizing standpoint.
- Check your panel first — A 10HP compressor at 230V 3-phase draws roughly 28-32 amps. At 460V, roughly 14-16 amps. Your electrician needs to confirm breaker capacity and wire gauge before installation.
Comparison: R1038VG11 vs. R10312VG11
The R10312VG11 is listed at $9,027 — approximately $943 more than this unit at $8,084. Both are 10HP 3-phase vertical-tank rotary screw configurations. The price difference most likely reflects a larger tank size or a configuration update in the R10312VG11. If tank storage capacity is a priority for your operation — for example, if you run multiple air tools simultaneously during peak hours — it is worth asking about the tank volume on each model before deciding. The compressor head performance should be similar between the two; the tank simply affects how much reserve volume you have before the motor has to cycle.
Installation Requirements
- 3-phase electrical service required — This is not a single-phase unit. If your shop runs on single-phase power, this compressor is not compatible without a phase converter (which adds cost and reduces efficiency).
- Dedicated circuit — Install on a dedicated breaker sized to the unit's FLA (full load amperage) plus the required NEC safety margin. Do not share a circuit with other large equipment.
- Ventilation — Rotary screw compressors generate heat. Ensure the installation location has adequate airflow. Avoid enclosing the unit in a tight space without ventilation provisions.
- Condensate drain — The tank will accumulate condensate. Plan for a drain location and either a manual or automatic drain valve.
- Leveling — Install on a level concrete surface. Consult the installation manual for anchor requirements.
What's in the Box
Confirm complete contents with manufacturer documentation. Typical inclusions for this class of unit:
- Rotary screw compressor and drive assembly
- Vertical air receiver tank with pressure gauge
- Safety relief valve
- Motor starter / control panel
- Oil fill and initial oil charge (confirm with documentation)
- Installation and maintenance manual
Why Buy From OEM Diagnostic Tools?
OEM Diagnostic Tools has been supplying professional shop equipment since 2016. We carry rotary screw compressors because our customers — working shops — need equipment that runs reliably, not equipment they have to baby. When you call us, you talk to someone who understands what 10HP continuous-duty means in a real shop environment.
- Free shipping on this unit (freight delivery — confirm delivery access at your location)
- Free tech support at 866-217-0063 — call before you order if you have installation questions
- Full manufacturer warranty honored
- Honest buying guidance — if the R10312VG11 is the better fit for your application, we'll tell you
Call 866-217-0063 for quick answers and help!
