The Castair RDD40.016 is a compact refrigerated compressed air dryer from the Castair RDD40 series. The .016 designation in the model number identifies a specific capacity or configuration variant within the RDD40 dryer line. Castair RDD series dryers are refrigerated units that maintain a 37°F pressure dew point, removing moisture from compressed air before it reaches air tools, spray equipment, pneumatic controls, and piping systems.
If you are already running Castair RDD40-series equipment and need a replacement unit or an additional dryer for a secondary compressor, the RDD40.016 is the variant to confirm. The model number suffix indicates the specific flow rating or configuration — contact us at 866-217-0063 to confirm the exact CFM capacity and electrical specifications for this variant before ordering.
Castair RDD40 Series — How Refrigerated Dryers Work
- Refrigeration cycle: Freon refrigerant (R134a or R407c) chills incoming compressed air inside a stainless steel heat exchanger, dropping temperature to 37°F and condensing water vapor into liquid droplets.
- Automatic demand drain: Condensate is ejected through the automatic drain only when liquid is detected — no fixed-timer air waste.
- Dual-function heat exchanger: Pre-cools incoming air with outgoing cold air, improving efficiency.
- Simple dew point indicator: Visual confirmation of proper operation — no computer controls or programming.
- Maximum inlet pressure: 232 PSIG
- UL listed
What's in the Box
- Castair RDD40.016 refrigerated compressed air dryer unit
- Power cord
- Refrigerant pre-charged at factory (R134a/R407c)
A properly sized pre-filter upstream of the dryer is required for warranty coverage. Contact us for filter sizing recommendations based on your compressor output and installation conditions.
Technical Specifications
- Part Number: RDD40.016
- Series: Castair RDD40 refrigerated dryer
- Pressure Dew Point: 37°F
- Maximum Inlet Pressure: 232 PSIG
- Refrigerant: R134a / R407c
- Heat Exchanger: Stainless steel, dual-function
- Drain: Automatic, demand-based
- CFM rating, voltage, amperage, connection size, weight, and dimensions: Contact us for full specifications — 866-217-0063
- Certifications: UL Listed
Why Buy From Air Compressor Factory Direct?
We specialize in Castair compressed air equipment and have since 2016. For RDD series dryers with model number suffixes, we can confirm the exact capacity, electrical requirements, and connection sizes before you order. Free shipping on qualifying orders, free pre-sale technical support, full Castair manufacturer warranty.
Call 866-217-0063 for quick answers and help!
