{"product_id":"castair-refrigerated-air-dryer-rdd50","title":"Castair Refrigerated Air Dryer RDD50","description":"\u003cp\u003eThe Castair RDD50 is a refrigerated compressed air dryer from Castair's RDD series. The RDD50 designation places this unit above the RDD40 series — it is a higher-capacity or upgraded-specification dryer for compressed air systems that exceed what the RDD40 line is rated for. Castair's RDD series refrigerated dryers maintain a 37°F pressure dew point, using R134a or R407c refrigerant and a stainless steel heat exchanger to condense and remove water vapor from compressed air before it reaches tools, equipment, and piping.\u003c\/p\u003e\n\n\u003cp\u003eIf you are sourcing the RDD50 as a replacement for an existing unit or as an addition to a growing shop air system, call us at 866-217-0063. We can confirm the exact CFM capacity, electrical specifications, connection sizes, and physical dimensions for the RDD50 before you order. The RDD50 is not published in Castair's standard product table; full specifications require direct confirmation.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features — Castair RDD50\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure dew point:\u003c\/strong\u003e 37°F — standard for shop and industrial compressed air drying\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefrigerant:\u003c\/strong\u003e R134a or R407c (environmentally compliant)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat exchanger:\u003c\/strong\u003e Stainless steel, dual-function single-body — pre-cools incoming hot air with outgoing cold dry air\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic demand drain:\u003c\/strong\u003e Ejects condensate only when liquid is present — no fixed-timer air waste\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDew point indicator:\u003c\/strong\u003e Simple visual confirmation — no computer logic, no programming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick-connect refrigerant port:\u003c\/strong\u003e Field recharge capability without full disassembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum inlet pressure:\u003c\/strong\u003e 232 PSIG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL listed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCastair RDD50 refrigerated compressed air dryer unit\u003c\/li\u003e\n\u003cli\u003ePower cord\u003c\/li\u003e\n\u003cli\u003eRefrigerant pre-charged at factory (R134a\/R407c)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eA properly sized pre-filter upstream of the dryer inlet is required for warranty coverage. Contact us for filter specification recommendations for your installation.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eCastair RDD Series Lineup Context\u003c\/h2\u003e\n\u003cp\u003eThe Castair RDD series dryers are separate from the RD series (RD25-6K through RD161-37K). For reference:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRDD40 series:\u003c\/strong\u003e RDD40.016, RDD40.030, RDD40.060 — lower-capacity RDD dryers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRDD50:\u003c\/strong\u003e This unit — mid-range RDD series dryer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRDD80 series:\u003c\/strong\u003e RDD80.060 — higher-capacity RDD dryer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCall 866-217-0063 to confirm which RDD model is appropriate for your compressor output and air demand.\u003c\/p\u003e\n\n\u003ch2\u003eWhen You Need a Refrigerated Dryer\u003c\/h2\u003e\n\u003cp\u003eMoisture in compressed air is a maintenance cost that compounds over time. Without a refrigerated dryer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAir tools rust internally and fail early — bearings, vanes, and O-rings corrode\u003c\/li\u003e\n\u003cli\u003eSpray guns spit water into paint finishes, causing fish-eyes and adhesion failures\u003c\/li\u003e\n\u003cli\u003ePneumatic cylinders and solenoid valves corrode and stick\u003c\/li\u003e\n\u003cli\u003eAir distribution piping rusts from the inside — particulates end up at your tools\u003c\/li\u003e\n\u003cli\u003eAir dryer systems (desiccant towers, coalescing filters) saturate faster and cost more to maintain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCastair's data indicates a properly installed refrigerated dryer reduces air system maintenance costs and downtime by 15–25%.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RDD50\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Castair RDD50 refrigerated dryer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Dew Point:\u003c\/strong\u003e 37°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Inlet Pressure:\u003c\/strong\u003e 232 PSIG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefrigerant:\u003c\/strong\u003e R134a \/ R407c\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrain:\u003c\/strong\u003e Automatic, demand-based\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM capacity, voltage, amperage, connection size, weight, dimensions:\u003c\/strong\u003e Contact us for full specifications — 866-217-0063\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cp\u003eWe specialize in Castair compressed air equipment and have since 2016. For RDD series dryers with specifications not fully published online, we can confirm the exact capacity and requirements before you order. Free shipping on qualifying orders, free pre-sale technical support, full Castair manufacturer warranty.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342593908949,"sku":"RDD50","price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-refrigerated-air-dryer-rdd50","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}