Description
Keltec KRAD-15 Refrigerated Air Dryer — 15 CFM | 115V, single phase, 60 Hz
The Keltec KRAD-15 non-cycling refrigerated air dryer treats up to 15 ACFM at standard rating conditions to help reduce liquid-water problems in individual work areas and smaller shop air systems. Its aluminum plate heat exchanger, digital dew point monitoring, and integrated dual filtration provide a practical air-treatment package for applications that do not require subfreezing pressure dew points.
Key Features & Benefits
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Approximately 38°F pressure dew point: Helps limit downstream condensation when the treated air remains above its pressure dew point.
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Less than 3 PSI published pressure drop: Helps reduce pressure loss through the dryer.
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Integrated dual filtration: Internal filters remove contaminants down to the stated 0.01-micron rating.
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Digital control: Supports dew point monitoring and alarm visibility.
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Warm-inlet capability: Maximum inlet temperature of 140°F, with capacity correction required above rating conditions.
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Piston refrigerant compressor: Used on KRAD models through 250 CFM.
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Service access: Removable panels, accessible pressure switches, organized wiring, and refrigerant service valves support maintenance.
Technical Specifications — KRAD-15
| Manufacturer / Model |
Keltec KRAD-15 |
| Nominal air capacity |
15 ACFM |
| Rating conditions |
100 PSIG operating pressure / 100°F inlet / 100°F ambient |
| Air connections |
1/2-inch NPT |
| Electrical supply |
115V, single phase, 60 Hz |
| Pressure dew point |
Approximately 38°F |
| Published pressure drop |
Less than 3 PSI |
| Maximum working pressure |
230 PSI |
| Maximum inlet temperature |
140°F |
| Maximum ambient temperature |
122°F |
| Integrated filtration |
Dual internal filters, down to 0.01 micron |
| Refrigerant |
R134a |
| Dimensions (L × W × H) |
16.26 × 14.29 × 21.92 inches |
| Published unit weight |
70.54 lb |
Sizing & Installation
Size the dryer using the compressor's delivered airflow at the intended operating pressure, not horsepower alone. Divide the required flow by all applicable correction factors to determine the nominal dryer size needed. The maximum inlet and ambient temperatures are operating limits, not full-capacity rating conditions.
Install in a ventilated location with adequate service clearance, suitable upstream cooling, and a functioning condensate discharge arrangement. Verify electrical requirements and the equipment nameplate before connecting power. Published dimensions and weight are planning values; confirm installation details before finalizing tight-clearance layouts.
Recommended Applications
The KRAD-15 is suited to individual work areas and smaller shop air systems where moisture reduction and fine filtration are needed. Painting, instrumentation, and other sensitive processes may need additional point-of-use treatment matched to their specific air-quality requirements.
Complete Your Air Treatment System
Complementary recommendation: Add a properly sized activated-carbon filter downstream when your process requires oil-vapor removal beyond the dryer's internal filtration. Confirm flow rating and pressure drop for your 15 ACFM system before selecting the filter.
Comparing capacities? Review the Keltec KRAD-25 refrigerated air dryer and size both options for your actual operating conditions.
Frequently Asked Questions
How much compressed air can the Keltec KRAD-15 dry?
The KRAD-15 has a nominal capacity of 15 ACFM at 100 PSIG operating pressure, 100°F inlet air temperature, and 100°F ambient temperature. Apply the manufacturer's pressure, inlet-temperature, and ambient-temperature correction factors before matching it to your compressor's delivered airflow.
Should I choose the KRAD-15 or the KRAD-25?
The KRAD-15 is rated for 15 ACFM, compared with 25 ACFM for the KRAD-25, at standard rating conditions. Select based on corrected capacity and expected peak flow; a larger model can be appropriate when warmer inlet air or future expansion reduces the available sizing margin.
What electrical supply does the KRAD-15 require?
This listing is for 115V, single phase, 60 Hz. Confirm the equipment nameplate and have the circuit, protection, and connection requirements checked before installation; a matching voltage alone does not establish circuit compatibility.
Will the KRAD-15 connect to my air piping?
The KRAD-15 uses 1/2-inch NPT air connections and has a maximum working pressure of 230 PSI. Check your actual operating pressure, piping size, service access, and corrected airflow rather than choosing a dryer by port size alone.
Can the KRAD-15 handle 140°F inlet air?
The published maximum inlet air temperature is 140°F, but the 15 ACFM rating is based on 100°F inlet air. The brochure's inlet-temperature factor at 140°F is 0.45, giving 6.75 ACFM before any additional pressure or ambient corrections; use suitable upstream cooling if inlet air would exceed the limit.
Does the KRAD-15 include filters, and does that make the air oil-free?
The KRAD-15 includes dual internal filtration with a stated rating down to 0.01 micron. That micron rating does not establish oil-vapor removal, breathing-air suitability, or a complete ISO air-quality class; applications needing vapor removal may require a properly sized activated-carbon filter.
How dry is the air from the KRAD-15 compared with a desiccant dryer?
The KRAD series is designed for approximately 38°F pressure dew point performance under suitable operating conditions. If your 15 ACFM system needs subfreezing dew points or supplies piping exposed to freezing temperatures, evaluate a desiccant dryer sized for the required flow and dew point.
What maintenance does the KRAD-15 need?
Keep the condenser clean, maintain ventilation, check condensate drainage, and monitor dew point and filter condition on this 1/2-inch NPT dryer. Service the internal elements and drains according to the operating manual and actual conditions, and have refrigeration or electrical work performed by qualified personnel.
Need help selecting the right Keltec dryer? Call Compressed Air Advisors Online at 877-247-2381 with your compressor flow, operating pressure, inlet temperature, and available electrical supply.
